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Article: Wetland megabias: ecological and ecophysiological filtering dominates the fossil record of hot spring floras

Publication: Palaeontology
Volume: 56
Part: 3
Publication Date: May 2013
Page(s): 523 – 556
Author(s): Alan Channing and Dianne Edwards
Addition Information

How to Cite

CHANNING, A., EDWARDS, D. 2013. Wetland megabias: ecological and ecophysiological filtering dominates the fossil record of hot spring floras. Palaeontology, 56, 3, 523–556.

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References

  • Adams, A., Raman, A. and Hodgkins, D. 2012. How do the plants used in phytoremediation in constructed wetlands, a sustainable remediation strategy, perform in heavy-metal-contaminated mine sites? Water and Environment Journal. Published online 7 September 2012. doi: 10.1111/j.1747-6593.2012.00357.x
  • Agarie, S., Hanaoka, N., Ueno, O., Miyazaki, A., Kubota, F., Agata, W. and Kaufman, P. B. 1998. Effects of silicon on tolerance to water deficit and heat stress in rice plants (Oryza sativa L.), monitored by electrolyte leakage. Plant Production Science, 1, 96–103.
  • Alarcón-Herrera, M. T., Olmos-Márquez, M. A., Valles-Aragon, C., Llorens, E. and Martin Domínguez, I. R. 2013. Assessing plants for phytoremediation of arsenic-contaminated water and soil. European Chemical Bulletin, 2, 121–125.
  • Ali, S., Farooq, M. A., Yasmeen, T., Hussain, S., Arif, M. S., Abbas, F., Bharwana, S. A. and Zhang, G. 2013. The influence of silicon on barley growth, photosynthesis and ultra-structure under chromium stress. Ecotoxicology and Environmental Safety, 89, 66–72.
  • Alvin, K. L. 1982. Cheirolepidiaceae: biology, structure and paleoecology. Review of Palaeobotany and Palynology, 37, 71–98.
  • Anderson, L. I. and Trewin, N. H. 2003. An early Devonian arthropod fauna from the Windyfield cherts, Aberdeenshire, Scotland. Palaeontology, 46, 467–509.
  • Arnold, C. A. and Daugherty, L. H. 1963. The fern genus Acrostichum in the Eocene Clarno Formation of Oregon. Contributions from the Museum of Paleontology University of Michigan, 18, 205–227.
  • Ashraf, M. A., Maah, M. J. and Yusoff, I. 2011. Heavy metals accumulation in plants growing on former tin mining catchment. International Journal of Environmental Science and Technology, 8, 401–416.
  • Bargar, K. E. and Beeson, M. H. 1981. Hydrothermal alteration in research drill hole Y-2, Lower Geyser Basin, Yellowstone National Park, Wyoming. American Mineralogist, 66, 473–490.
  • Barghigiani, C., Siegel, B. Z., Bargagli, R. and Siegel, S. M. 1989. The contribution of mercury from thermal springs to contamination of Mt. Amiata. Water, Air, and Soil Pollution, 43, 169–175.
  • Baron, R. 1889. Notes on the geology of Madagascar: with an appendix on the fossils, by R. B. Newton, Esq., F.G.S. Quarterly Journal of the Geological Society, 45, 305–331.
  • Belhadi, A., Nakanishi, T., Watanabe, K. and Izawa, E. 2002. Gold mineralization and occurrence of sinter in the Hoshino area, Fukuoka Prefecture, Japan. Resource Geology, 52, 371–380.
  • Boggs, K. 2000. Classification of community types, successional sequences, and landscapes of the Copper River Delta, Alaska, General Technical Report PNW-GTR-469. US Department of Agriculture, Forest Service, Pacific Northwest Research Station, Portland, OR, 120 pp.
  • Brathwaite, R. L. 2003. Geological and mineralogical characterization of zeolites in lacustrine tuffs, Ngakuru, Taupo Volcanic Zone, New Zealand. Clays and Clay Minerals, 51, 589–598.
  • Brathwaite, R. L. and Christie, A. B. 2000. Deposit types and paleo-depth extents of Coromandel epithermal Au–Ag deposits. New Zealand Minerals and Mining Conference Proceedings 2000, 29–31.
  • Briggs, B. G. and Linder, H. P. 2009. A new subfamilial and tribal classification of Restionaceae (Poales). Telopea, 12, 333–345.
  • Brock, T. D. 1971. Bimodal distribution of pH values of thermal springs of the world. Geological Society of America Bulletin, 82, 1393–1394.
  • Brock, T. D. 1994. Life at high temperatures. Yellowstone Association for Natural Science, History & Education Inc., Yellowstone National Park, WY, 31 pp.
  • Brown, J. T. 1975. Equisetum clarnoi, a new species based on petrifactions from the Eocene of Oregon. American Journal of Botany, 62, 410–415.
  • Bundtzen, T. K. and Miller, M. L. 1997. Precious metals associated with Late Cretaceous – Early Tertiary igneous rocks of southwestern Alaska. Economic Geology Monograph, 9, 242–286.
  • Burns, B. and Leathwick, J. 1995. Geothermal vegetation dynamics in Te Kopia Scenic Reserve. Department of Conservation, Wellington, New Zealand, Science for Conservation 18, 26 pp.
  • Cady, S. L. and Farmer, J. D. 1996. Fossilisation processes in siliceous thermal springs: trends in preservation along the thermal gradient. 150–173. In Bock, G. R. and Goode, J. (eds). Evolution of hydrothermal ecosystems on Earth (and Mars?). Ciba Foundation Symposium 202. John Wiley and Sons, Chichester, UK, 335 pp.
  • Campbell, K. A., Sannazzaro, K., Rodgers, K. A., Herdianita, N. R. and Browne, P. R. L. 2001. Sedimentary facies and mineralogy of the Late Pleistocene Umukuri silica sinter, Taupo Volcanic Zone, New Zealand. Journal of Sedimentary Research, 71, 728–747.
  • Campbell, K. A., Buddle, T. F. and Browne, P. R. L. 2003. Late Pleistocene siliceous sinter associated with fluvial, lacustrine, volcaniclastic and landslide deposits at Tahunaatara, Taupo Volcanic Zone, New Zealand. Transactions of the Royal Society of Edinburgh: Earth Sciences, 94, 485–501.
  • Carew, T. J. 2006. NI 43–101 technical report and resource estimate for the Cordero Gallium Project Humboldt County, Nevada. USA. Reserva International LLC, Reno, NV, 35 pp.
  • Chang, P., Kim, J.-Y. and Kim, K.-W. 2005. Concentrations of arsenic and heavy metals in vegetation at two abandoned mine tailings in South Korea. Environmental Geochemistry and Health, 27, 109–119.
  • Channing, A. 2001. Processes and environments of vascular plant silicification. Unpublished PhD thesis, Cardiff University, 352 pp.
  • Channing, A. 2003. The Rhynie chert early land plants: palaeo-ecophysiological and taphonomic analogues. Transactions of the Institution of Mining and Metallurgy, Section B: Applied Earth Science, 112, B170–B171.
  • Channing, A. and Edwards, D. 2004. Experimental taphonomy: silicification of plants in Yellowstone hot spring environments. Transactions of the Royal Society of Edinburgh: Earth Sciences, 94, 503–521.
  • Channing, A. and Edwards, D. 2009a. Yellowstone hot spring environments and the palaeo-ecophysiology of Rhynie chert plants: towards a synthesis. Plant Ecology and Diversity, 2, 111–143.
  • Channing, A. and Edwards, D. 2009b. Silicification of higher plants in geothermally influenced wetlands: Yellowstone as a Lower Devonian Rhynie analog. Palaios, 24, 505–521.
  • Channing, A., Zamuner, A. B. and Zúñiga, A. 2007. A new Middle–Late Jurassic flora and hot spring chert deposit from the Deseado Massif, Santa Cruz province, Argentina. Geological Magazine, 144, 401–411.
  • Channing, A., Zamuner, A. B., Edwards, D. and Guido, D. 2011. Equisetum thermale sp. nov. (Equisetales) from the Jurassic San Agustín hot spring deposit, Patagonia: anatomy, paleoecology and inferred paleoecophysiology. American Journal of Botany, 98, 680–697.
  • Chen, C.-H. and Lewin, J. 1969. Silicon as a nutrient element for Equisetum arvense. Canadian Journal of Botany, 47, 125–131.
  • Chen, W., Yao, X., Cai, K. and Chen, J. 2010. Silicon alleviates drought stress of rice plants by improving plant water status, photosynthesis and mineral nutrient absorption. Biological Trace Element Research, 142, 67–76.
  • Cocker, K. M., Evans, D. E. and Hodson, M. J. 1998. The amelioration of aluminium toxicity by silicon in higher plants: solution chemistry or an in planta mechanism? Physiologia Plantarum, 104, 608–614.
  • Cooke, J. and Leishman, M. R. 2011. Is plant ecology more siliceous than we realise? Trends in Plant Science, 16, 61–68.
  • Copard, Y., Bailly, L., Becq-Giraudon, J. F. and Disnar, J. R. 2002. Anomalous Au silicifications in the Upper Carboniferous of the French Massif Central: timing and temperature constraints by combined geochemical and organic-matter studies. International Journal of Earth Sciences, 91, 459–468.
  • Cornara, L., Roccotiello, E., Minganti, V., Drava, G., De Pellegrini, R. and Mariotti, M. G. 2007. Level of trace elements in pteridophytes growing on serpentine and metalliferous soils. Journal of Plant Nutrition and Soil Science, 170, 781–787.
  • COSEWIC 2006. COSEWIC assessment and update status report on the Bolander's quillwort Isoetes bolanderi in Canada. Committee on the Status of Endangered Wildlife in Canada, Ottawa, 21 pp.
  • Cross, A. J., Purdy, D. J., Bultitude, R. J., Dhnaram, C. D. and Von Gnielinski, F. E. 2008. Joint GSQ-GA NGA Geochronology Project, New England Orogen and Drummond Basin, 2008. Queensland Geological Record 2009/03. Geological Survey of Queensland, Indooroopilly, Queensland, 36 pp.
  • Cunneen, R. and Sillitoe, R. H. 1989. Palaeozoic hot spring sinter in the Drummond basin, Queensland, Australia. Economic Geology, 84, 135–142.
  • da Cunha, K. P. V., Do Nascimento, C. W. A. and Da Silva, A. J. 2008. Silicon alleviates the toxicity of cadmium and zinc for maize (Zea mays L.) grown on a contaminated soil. Journal of Plant Nutrition and Soil Science, 171, 849–853.
  • Darling, W. G. and Spiro, B. 2007. Oxygen isotopes in hydrothermal sinters as an indicator of Quaternary lakewater compositions in the Kenya Rift Valley. 1475–1480. In Bullen, T. D. and Wang, Y. (eds). Water-rock interaction: Proceedings of the 12th International Symposium on Water-Rock Interaction, Kunming, China, 31st July–5th August, 2007. Taylor and Francis, London, 1734 pp.
  • Deng, H., Ye, Z. H. and Wong, M. H. 2004. Accumulation of lead, zinc, copper and cadmium by 12 wetland plant species thriving in metal contaminated sites in China. Environmental Pollution, 132, 29–40.
  • DiMichele, W. A. and Falcon-Lang, H. J. 2011. Pennsylvanian ‘fossil forests’ in growth position (T0 assemblages): origin, taphonomic bias and palaeoecological insights. Journal of the Geological Society, 168, 585–605.
  • DiMichele, W. A. and Philips, T. L. 1985. Arborescent lycopod reproduction and paleoecology in a coal-swamp environment of late Middle Pennsylvanian age (Herrin Coal, Illinois, USA). Review of Palaeobotany and Palynology, 44, 1–26.
  • DiMichele, W. A., Cecil, C. B., Montañez, I. P. and Falcon-Lang, H. J. 2010. Cyclic changes in Pennsylvanian paleoclimate and effects on floristic dynamics in tropical Pangaea. International Journal of Coal Geology, 83, 329–344.
  • Edbrooke, S. W. 2001. Geology of the Auckland area. Institute of Geological & Nuclear Sciences 1:250000 geological map 3. Institute of Geological & Nuclear Sciences Limited, Lower Hutt, New Zealand, 74 pp.
  • Edwards, D. 2004. Embryophytic sporophytes in the Rhynie and Windyfield cherts. Transactions of the Royal Society of Edinburgh: Earth Sciences, 94, 397–410.
  • Edwards, D. S. and Lyon, A. G. 1983. Algae from the Rhynie chert. Botanical Journal of the Linnean Society, 86, 37–55.
  • Edwards, D. and Richardson, J. B. 1974. Lower Devonian (Dittonian) plants from the Welsh borderland. Palaeontology, 17, 311–324.
  • Edwards, D. and Richardson, J. B. 2000. Progress in reconstructing vegetation on the Old Red Sandstone continent: two Emphanisporites producers from the Lochkovian sequence of the Welsh Borderland. 355–370. In Friend, P. F. and Williams, B. P. J. (eds). New Perspectives on the Old Red Sandstone. Geological Society, London, Special Publication, 180, 610 pp.
  • Edwards, D., Kerp, H. and Hass, H. 1998. Stomata in early land plants: an anatomical and ecophysiological approach. Journal of Experimental Botany, 49, 255–278.
  • El-Saadawy, W. 1966. Studies on the flora of the Rhynie chert. Unpublished PhD thesis, University of Wales, Bangor, 166 pp.
  • Eneji, A. E., Inanaga, S., Muranaka, S., Li, J., Hattori, T., An, P. and Tsuji, W. 2008. Growth and nutrient use in four grasses under drought stress as mediated by silicon fertilizers. Journal of Plant Nutrition, 31, 355–365.
  • Ertel, B. J. 2009. Microfacies and morphology of a fossil hot spring system, McGinness Hills, Nevada. Unpublished MSc thesis, University of Montana, Missoula, 51 pp.
  • Erwin, D. M. and Schorn, H. E. 1996. Silicified cyperaceous plant remains from an ancient hot springs deposit near Soda Lake, Nevada, USA. 27. In Corsetti, F and Tiffney, B. H. (eds). Abstract volume: fifth Quadrennial Conference of the International Organisation of Paleobotany, Santa Barbara, California, 30 June–5 July, 1996. International Organisation of Paleobotany, University of California, Santa Barbara, 238 pp.
  • Ewers, G. R. 1991. Oxygen isotopes and the recognition of siliceous sinters in epithermal ore deposits. Economic Geology, 86, 173–178.
  • Falcon-Lang, H. J., Pendleton, J. L. and Wellman, C. H. 2011. Dryland plant communities in the Pennsylvanian (mid- to late Bolsovian) Winterbourne Formation of Bristol, southern Britain: further evidence for taphonomic megabias. Review of Palaeobotany and Palynology, 166, 268–285.
  • Fiorelli, L. E., Grellet-Tinner, G., Alasino, P. H. and Arganaraz, E. 2011. The geology and palaeoecology of the newly discovered Cretaceous neosauropod hydrothermal nesting site in Sanagasta (Los Llanos Formation), La Rioja, northwest Argentina. Cretaceous Research, 35, 94–117.
  • Flores-Tavizón, E., Alarcón-Herrera, M. T., González Elizondo, S. and Olguin, E. J. 2003. Arsenic tolerating plants from mine sites and hot springs in the semi-arid region of Chihuahua, México. Acta Biotechnologia, 23, 113–119.
  • Freytet, P., Broutin, J. and Durand, M. 2000. Distribution and palaeoecology of freshwater algae and stromatolites: III, some new forms from the Carboniferous, Permian and Triassic of France and Spain. Annales de Paléontologie, 86, 195–241.
  • Funk, D. W., Noel, L. E. and Freedman, A. H. 2004. Environmental gradients, plant distribution, and species richness in arctic salt marsh near Prudhoe Bay, Alaska. Wetlands Ecology and Management, 12, 215–233.
  • Galtier, J. 2008. A new look at the permineralized flora of Grand-Croix (Late Pennsylvanian, Saint-Etienne basin, France). Review of Palaeobotany and Palynology, 152, 129–140.
  • Gastaldo, R. A. 1986. Implications on the paleoecology of autochthonous Carboniferous lycopods in clastic sedimentary environments. Palaeogeography, Palaeoclimatology, Palaeoecology, 53, 191–212.
  • Gastaldo, R. A. and Demko, T. M. 2011. The relationship between continental landscape evolution and the plant-fossil record: long term hydrologic controls on preservation. 249–285. In Allison, P. A. and Bottjer, D. J. (eds). Taphonomy: process and bias through time. Springer, Heidelberg, 599 pp.
  • Gastaldo, R. A., Gibson, M.A. and Blanton-Hooks, A. 2006. The Late Mississippian back-barrier marsh ecosystem in the Black Warrior and Appalachian Basins. 139–154. In DiMichele, W. A. and Greb, S. (eds). Wetlands through time. Geological Society of America, Special Papers, 399, 322 pp.
  • Gaylord, D. R., Price, S. M. and Suydam, J. D. 2001. Volcanic and hydrothermal influences on Middle Eocene lacustrine sedimentary deposits, Republic Basin, northern Washington, USA. 199–222. In White, J. D. L. and Riggs, N. R. (eds). Volcaniclastic Sedimentation in Lacustrine Settings. Blackwell, London, 320 pp.
  • Given, D. R. 1980. Vegetation on heated soils at Karapiti, central North Island, New Zealand, and its relation to ground temperature. New Zealand Journal of Botany, 18, 1–13.
  • Given, D. R. 1993. Changing aspects of endemism and endangerment in Pteridophyta. Journal of Biogeography, 20, 293–302.
  • Graney, J. R. 1987. Hasbrouck Mountain, Nevada. Precious metal mineralization in a fossil hot spring environment. 120–125. In Johnson, J. L. (ed.). Bulk mineable precious metal deposits of the western United States: guidebook for field trips. Geological Society of Nevada, Reno, NV, 418 pp.
  • Gray, J. E. and Coolbaugh, M. F. 1994. Geology and geochemistry of Summitville, Colorado; an epithermal acid sulfate deposit in a volcanic dome. Economic Geology, 89, 1906–1923.
  • Gray, J. E., Gent, C. A., Snee, L. W. and Wilson, F. H. 1997. Epithermal mercury-antimony and gold-bearing vein lodes of southwestern Alaska. Economic Geology Monograph, 9, 287–305.
  • Greb, S. F., DiMichele, W. A. and Gastaldo, R. A. 2006. Evolution and importance of wetlands in Earth history. 1–40. In Greb, S. F. and DiMichele, W. A. (eds). Wetlands through time. Geological Society of America, Special Papers, 399, 322 pp.
  • Guido, D. M. and Campbell, K. A. 2009. Jurassic hot-spring activity in a fluvial setting at La Marciana, Patagonia, Argentina. Geological Magazine, 146, 617–622.
  • Guido, D. M. and Campbell, K. A. 2011. Jurassic hot spring deposits of the Deseado Massif (Patagonia, Argentina): characteristics and controls on regional distribution. Journal of Volcanology and Geothermal Research, 203, 35–47.
  • Guido, D. M. and Campbell, K. A. 2012. Diverse subaerial and sublacustrine hot spring settings of the Cerro Negro epithermal system (Jurassic, Deseado Massif), Patagonia, Argentina. Journal of Volcanology and Geothermal Research, 229–230, 1–12.
  • Guido, D. M., Channing, A., Campbell, K. A. and Zamuner, A. B. 2010. Jurassic geothermal landscapes and fossil ecosystems at San Agustín, Patagonia, Argentina. Journal of the Geological Society of London, 167, 11–20.
  • Guidry, S. A. and Chafetz, H. S. 2003. Depositional facies and diagenetic alteration in a relict siliceous hot-spring accumulation: examples from Yellowstone National Park, U.S.A. Journal of Sedimentary Research, 73, 806–823.
  • Guo, W., Hou, Y. L., Wang, S. G. and Zhu, Y. G. 2005. Effect of silicate on the growth and arsenate uptake by rice (Oryza sativa L.) seedlings in solution culture. Plant and Soil, 272, 173–181.
  • Ha, N. T. H., Sakakibara, M. and Sano, S. 2009a. Phytoremediation of Sb, As, Cu, and Zn from contaminated water by the aquatic macrophyte Eleocharis acicularis. Clean – Soil, Air, Water, 37, 720–725.
  • Ha, N. T. H., Sakakibara, M., Sano, S., Hori, R. S. and Sera, K. 2009b. The potential of Eleocharis acicularis for phytoremediation: case study at an abandoned mine site. Clean – Soil, Air, Water, 37, 203–208.
  • Ha, N. T. H., Sakakibara, M. and Sano, S. 2011a. Accumulation of Indium and other heavy metals by Eleocharis acicularis: an option for phytoremediation and phytomining. Bioresource technology, 102, 2228–2234.
  • Ha, N. T. H., Sakakibara, M., Sano, S. and Mai, T. N. 2011b. Uptake of metals and metalloids by plants growing in a lead–zinc mine area, Northern Vietnam. Journal of Hazardous Materials, 186, 1384–1391.
  • Habgood, K. S., Hass, H. and Kerp, H. 2004. Evidence for an early terrestrial food web: coprolites from the Early Devonian Rhynie chert. Transactions of the Royal Society of Edinburgh: Earth Sciences, 94, 371–389.
  • Hall, D. J. 2012. A new epithermal gold discovery: Megenta, Tendaho, Afar Depression. The Afar Rift Consortium: Magmatic Rifting & Active Volcanism Conference 2012, Addis Ababa, Ethiopia 11–13 January, 2012, Abstract Volume, p. 32.
  • Hampton, W. A. 2002. Textures and mineralogy of Pliocene silica sinter at Whenuaroa, Southern Puhipuhi, Northland. Unpublished MSc thesis, University of Auckland, 111 pp.
  • Handley, K. M. and Campbell, K. A. 2011. Character, analysis and preservation of biogenicity in terrestrial siliceous stromatolites from geothermal settings. 359–383. In Tewari, V. C. and Seckbach, J. (eds). Stromatolites: interaction of microbes with sediments. Springer, Heidelberg, 751 pp.
  • Harris, D. 2011. Hycroft Deposit, Humboldt and Pershing Co., Nevada. Geological Society of Nevada Newsletter, 27, 8.
  • Hart, B. T., Bailey, P., Edwards, R., Hortle, K., James, K., McMahon, A., Meredith, C. and Swadling, K. 1991. A review of the salt sensitivity of the Australian freshwater biota. Hydrobiologia, 210, 105–144.
  • Harvey, C. C. 1981. Kaolin clay deposits associated with fossil geothermal systems in New Zealand. 143–148. In Geothermal Institute. Proceedings of the 3rd New Zealand Geothermal Workshop, 1981. University of Auckland, 230 pp.
  • Hattori, T., Inanaga, S., Araki, H., An, P., Morita, S., Luxová, M. and Lux, A. 2005. Application of silicon enhanced drought tolerance in Sorghum bicolor. Physiologia Plantarum, 123, 459–466.
  • Haug, C., Haug, J. T., Fayers, S. R., Trewin, N. H., Castellani, C., Waloszek, D. and Maas, A. 2012. Exceptionally preserved nauplius larvae from the Devonian Windyfield chert, Rhynie, Aberdeenshire, Scotland. Palaeontologia Electronica, 15, 2.24A.
  • Henderson, D. 2010. Fruta del Norte Project, Ecuador NI 43–101 Technical Report. Kinross Gold Corporation, Toronto, ON, 23 pp.
  • Henderson, R. A., Davis, B. K. and Fanning, C. M. 1998. Stratigraphy, age relationships and tectonic setting of rift-phase infill in the Drummond Basin, central Queensland. Australian Journal of Earth Sciences, 45, 579–595.
  • Henneberger, R. C. and Browne, P. R. L. 1988. Hydrothermal alteration and evolution of the Ohakuri geothermal system, Taupo Volcanic Zone, New Zealand. Journal of Volcanology and Geothermal Research, 34, 211–231.
  • Herdianita, N. R., Browne, P. R. L., Rodgers, K. A. and Campbell, K. A. 2000. Mineralogical and textural changes accompanying ageing of silica sinter. Mineralium Deposita, 35, 48–62.
  • Herrera, P. A., Closs, L. G. and Silberman, M. L. 1993. Alteration and geochemical zoning in Bodie Bluff, Bodie mining district, eastern California. Journal of Geochemical Exploration, 48, 259–275.
  • Hinman, N. W. and Walter, M. R. 2005. Textural preservation in siliceous hot spring deposits during early diagenesis: examples from Yellowstone National Park and Nevada, USA. Journal of Sedimentary Research, 75, 200–215.
  • Hodson, M. J., White, P. J., Mead, A. and Broadley, M. R. 2005. Phylogenetic variation in the silicon composition of plants. Annals of Botany, 96, 1027–1046.
  • Hoffman, F. M. and Hillson, C. J. 1979. Effects of silicon on the life cycle of Equisetum hyemale L. Botanical Gazette, 140, 127–132.
  • Holland, G. R. 2000. The Whirinaki sinter, Taupo Volcanic Zone. Unpublished MSc thesis, University of Auckland, 116 pp.
  • Hozhina, E. I., Khramov, A. A., Gerasimov, P. A. and Kumarkov, A. A. 2001. Uptake of heavy metals, arsenic, and antimony by aquatic plants in the vicinity of ore mining and processing industries. Journal of Geochemical Exploration, 74, 153–162.
  • Huang, Y., Liu, J., Quan, C. and Zhu, W. 2011. Metallogenic origin of Sipingshan hot spring gold deposit in Hulin of Heilongjiang and its metallogenic mode. Global Geology, 14, 73–86.
  • Huang, Y. Z., Zhang, W. Q. and Zhao, L. J. 2012. Silicon enhances resistance to antimony toxicity in the low-silica rice mutant, lsi1. Chemistry and Ecology, 28, 341–354.
  • Hutchinson, G. E. 1943. The biogeochemistry of aluminum and of certain related elements. Quarterly Review of Biology, 18, 1–29.
  • Jones, B. and Renaut, R. W. 2003. Hot spring and geyser sinters: the integrated product of precipitation, replacement, and deposition. Canadian Journal of Earth Sciences, 40, 1549–1569.
  • Jones, B. and Renaut, R. W. 2007. Microstructural changes accompanying the opal-A to opal-CT transition: new evidence from the siliceous sinters of Geysir, Haukadalur, Iceland. Sedimentology, 54, 921–948.
  • Jones, B., Renaut, R. W. and Rosen, M. R. 1998. Microbial biofacies in hot-spring sinters: a model based on Ohaaki Pool, North Island, New Zealand. Journal of Sedimentary Research, 68, 413–434.
  • Jones, B., Renaut, R. W., Torfason, H. and Owen, R. B. 2007. The geological history of Geysir, Iceland: a tephrochronological approach to the dating of sinter. Journal of the Geological Society, 164, 1241–1252.
  • Karmollachaab, A., Bakhshandeh, A., Gharineh, M. H., Moradi Telavat, M. R. and Fathi, G. 2013. Effect of silicon application on physiological characteristics and grain yield of wheat under drought stress condition. International Journal of Agronomy and Plant Production, 4, 30–37.
  • Kaya, C., Tuna, A. L. and Higgs, D. 2006. Effect of silicon on plant growth and mineral nutrition of maize grown under water-stress conditions. Journal of Plant Nutrition, 29, 1469–1480.
  • Keeley, J. E. 1990. Photosynthesis in vernal pool macrophytes: relation of structure and function. 61–88. In Ikeda, D. H. and Schlising, R. A. (eds) Vernal pool plants: their habitat and biology. California State University, Chico, CA, Studies from the Herbarium, 8, 178 pp.
  • Keeley, J. E. and Bowes, G. 1982. Gas exchange characteristics of the submerged aquatic crassulacean acid metabolism plant, Isoetes howelii. Plant Physiology, 70, 1455–1458.
  • Keeley, J. E. and Zedler, P. H. 1998. Characterization and global distribution of vernal pools. 1–14. In Witham, C. W., Bauder, C. W., Bauder, E. T., Belk, D., Ferren, W. R. Jr and Ornduff, R. (eds). Ecology, conservation and management of vernal pool ecosystems. California Native Plant Society, Sacramento, CA, 285 pp.
  • Keith, W. J., Turner, R. L. and Plouff, D. 1987. Mineral resources of the Little High Rock Canyon wilderness study area, Humboldt and Washoe counties, Nevada. United States Geological Survey, Alexandria VA, 28 pp.
  • Kelman, R., Feist, M., Trewin, N. H. and Hass, H. 2004. Charophyte algae from the Rhynie chert. Transactions of the Royal Society of Edinburgh: Earth Sciences, 94, 445–455.
  • Kerp, H., Trewin, N. H. and Hass, H. 2004. New gametophytes from the Early Devonian Rhynie chert. Transactions of the Royal Society of Edinburgh: Earth Sciences, 94, 411–428.
  • Kesler, S. E. and Wilkinson, B. H. 2009. Resources of gold in Phanerozoic epithermal deposits. Economic Geology, 104, 623–633.
  • Kidston, R. and Lang, W. H. 1917. On Old Red Sandstone plants showing structure, from the Rhynie chert bed, Aberdeenshire. Part I. Rhynia gwynne-vaughani. Transactions of the Royal Society of Edinburgh, 51, 761–784.
  • Kizis, J. A. 2006. NI43-101 geologic report for the Baxter Project, Churchill and Nye counties, Nevada. Fortune River Resource Corp, Vancouver, BC, 24 pp.
  • Krassilov, V. and Karasev, E. 2009. Paleofloristic evidence of climate change near and beyond the Permian–Triassic boundary. Palaeogeography, Palaeoclimatology, Palaeoecology, 284, 326–336.
  • Krings, M., Kerp, H., Hass, H., Taylor, T. N. and Dotzler, N. 2007. A filamentous cyanobacterium showing structured colonial growth from the Early Devonian Rhynie chert. Review of Palaeobotany and Palynology, 146, 265–276.
  • Li, L., Zheng, C., Fu, Y., Wu, D., Yang, X. and Shen, H. 2012. Silicate-mediated alleviation of Pb toxicity in banana grown in Pb-contaminated soil. Biological Trace Element Research, 145, 101–108.
  • Liang, Y., Chen, Q., Liu, Q., Zhang, W. and Ding, R. 2003. Exogenous silicon (Si) increases antioxidant enzyme activity and reduces lipid peroxidation in roots of salt-stressed barley (Hordeum vulgare L.). Journal of Plant Physiology, 160, 1157–1164.
  • Liang, Y., Sun, W., Zhu, Y.-G. and Christie, P. 2007. Mechanisms of silicon mediated alleviation of abiotic stresses in higher plants: a review. Environmental Pollution, 147, 422–428.
  • Light, H. M., Darst, M. R. and Mattson, R. A. 2007. Ecological characteristics of tidal freshwater forests along the lower Suwannee River, Florida. 291–320. In Conner, W. H., Doyle, T. W. and Krauss, K. W. (eds). Ecology of tidal freshwater forested wetlands of the southeastern United States. Springer, Heidelberg, 505 pp.
  • Linjuan, Z., Junping, J., Lijun, W., Min, L. and Fusuo, Z. 1999. Effects of silicon on the seedling growth of creeping bentgrass and zoysiagrass. 381. In Datnoff, L. E., Snyder, G. H. and Korndorfer, G. H. (eds). Silicon in agriculture. Elsevier Science, Amsterdam, 424 pp.
  • Lottermoser, B. G. and Ashley, P. M. 2011. Trace element uptake by Eleocharis equisetina (spike rush) in an abandoned acid mine tailings pond, northeastern Australia: implications for land and water reclamation in tropical regions. Environmental Pollution, 159, 3028–3035.
  • Lynne, B. Y. 2012. Mapping vent to distal-apron hot spring paleo-flow pathways using siliceous sinter architecture. Geothermics, 43, 3–24.
  • Lynne, B. Y., Campbell, K. A., Moore, J. and Browne, P. R. L. 2005. Diagenesis of 1900-year-old siliceous sinter (opal-A to quartz) at Opal Mound, Roosevelt Hot Springs, Utah, U.S.A. Sedimentary Geology, 119, 249–278.
  • Lynne, B. Y., Campbell, K. A., Moore, J. and Browne, P. R. L. 2008. Origin and evolution of the Steamboat Springs siliceous sinter deposit, Nevada, USA. Sedimentary Geology, 210, 111–131.
  • Ma, J. F. 2003. Functions of silicon in higher plants. Progress in Molecular and Subcellular Biology, 33, 127–147.
  • Ma, J. F. 2004. Role of silicon in enhancing the resistance of plants to biotic and abiotic stresses. Soil Science and Plant Nutrition, 50, 11–18.
  • Marcoux, E., Le Berre, P. and Cocherie, A. 2004. The Meillers Autunian hydrothermal chalcedony: first evidence of a ~295 Ma auriferous epithermal sinter in the French Massif Central. Ore Geology Reviews, 25, 69–87.
  • Mateos-Naranjo, E., Andrades-Moreno, L. and Davy, A. J. 2013. Silicon alleviates deleterious effects of high salinity on the halophytic grass Spartina densiflora. Plant Physiology and Biochemistry, 63, 115–121.
  • Matysova, P., Rossler, R., Gotze, J., Leichmann, J., Forbes, G., Taylor, E. L., Sakala, J. and Grygar, T. 2010. Alluvial and volcanic pathways to silicified plant stems (Upper Carboniferous – Triassic) and their taphonomic and palaeoenvironmental meaning. Palaeogeography, Palaeoclimatology, Palaeoecology, 292, 127–143.
  • Mauk, J. L., Hall, C. M., Chesley, J. T. and Barra, F. 2011. Punctuated evolution of a large epithermal province: the Hauraki Goldfield, New Zealand. Economic Geology, 106, 921–943.
  • Mazumdar, J. 2011. Phytoliths of pteridophytes. South African Journal of Botany, 77, 10–19.
  • McClaughry, J. D., Ferns, M. L., Gordon, C. L. and Patridge, K. A. 2009. Field trip guide to the Oligocene Crooked River caldera: central Oregon's supervolcano, Crook, Deschutes, and Jefferson counties, Oregon. Oregon Geology, 69, 25–44.
  • McGill, R. A. R., Hall, A. J., Fallick, A. E. and Boyce, A. J. 1994. The palaeoenvironment of East Kirkton, West Lothian, Scotland: stable isotope evidence from silicates and sulphides. Transactions of the Royal Society of Edinburgh: Earth Sciences, 84, 223–237.
  • Meharg, A. A. 2003. Variation in arsenic accumulation–hyperaccumulation in ferns and their allies. New Phytologist, 157, 25–31.
  • Meixiang, Z. and Wei, T. 1987. Surface hydrothermal minerals and their distribution in the Tengchong geothermal area, China. Geothermics, 16, 181–195.
  • Mendes, M. M., Dinis, J. L., Gomez, B. and Pais, J. 2010. Reassessment of the cheirolepidiaceous conifer Frenelopsis teixeirae Alvin et Pais from the Early Cretaceous (Hauterivian) of Portugal and palaeoenvironmental considerations. Review of Palaeobotany and Palynology, 161, 30–42.
  • Mir, K. A., Rutter, A., Koch, I., Smith, P., Reimer, K. J. and Poland, J. S. 2007. Extraction and speciation of arsenic in plants grown on arsenic contaminated soils. Talanta, 72, 1507–1518.
  • Moussa, N., Fouquet, Y., Le Gall, B., Caminiti, A. M., Rolet, J., Bohn, M., Etoubleau, J., Delacourt, C. and Jalludin, M. 2012. First evidence of epithermal gold occurrences in the SE Afar Rift, Republic of Djibouti. Mineralium Deposita, 47, 563–576.
  • Nakanishi, T., Izawa, E. and Watanabe, K. 2003. Mineralogical and geochemical characteristics of siliceous sinter in Japan. 155–160. In Soengkono, S., Taguchi, S. and Simmons, S. F. (eds). Proceedings of the 25th New Zealand Geothermal Workshop. University of Auckland, 210 pp.
  • Nrhi, P., Risnen, M. L., Sutinen, M.-L. and Sutinen, R. 2012. Effect of tailings on wetland vegetation in Rautuvaara, a former iron–copper mining area in northern Finland. Journal of Geochemical Exploration, 116–117, 60–65.
  • Nelson, C. E. 1988. Gold deposits in the hot springs environment. 417–432. In Schafer, R. W., Cooper, J. J. and Vikre, P. G. (eds). Bulk mineable precious metal deposits of the western United States. Geological Society of Nevada, Reno, NV, 755 pp.
  • Neumann, D. and zur Nieden, U. 2001. Silicon and heavy metal tolerance of higher plants. Phytochemistry, 56, 685–692.
  • Nolla, R. J. F., Korndörfer, G. H. and Silva, T. R. B. 2012. Effect of silicon on drought tolerance of upland rice. Journal of Food, Agriculture and Environment, 10, 269–272.
  • Olmos-Márquez, M. A., Alarcón-Herrera, M. T. and Martín-Domínguez, I. R. 2012. Performance of Eleocharis macrostachya and its importance for arsenic retention in constructed wetlands. Environmental Science and Pollution Research, 19, 763–771.
  • Owen, R. B., Renaut, R. W., Hover, V. C., Ashley, G. M. and Muasya, A. M. 2004. Swamps, springs and diatoms: wetlands of the semi-arid Bogoria-Baringo Rift, Kenya. Hydrobiologia, 518, 59–78.
  • Owen, R. A., Owen, R. B., Renaut, R. W., Scott, J. J., Jones, B. and Ashley, G. M. 2008. Mineralogy and origin of rhizoliths on the margins of saline, alkaline Lake Bogoria, Kenya Rift Valley. Sedimentary Geology, 203, 143–163.
  • Ozaki, K. 1972. Plant fossils from the siliceous sinters in Sokokura Hakone-Machi Kanagawa Prefecture Japan. Science Reports of the Yokohama National University, Section II Biology and Geology, 159–169.
  • Paijmans, K. 1973. Plant succession on Pago and Witori volcanoes, New Britain. Pacific Science, 27, 260–268.
  • Panteleyev, A. 1996a. Epithermal Au–Ag: low sulphidation. 41–44. In Lefebure, D. V. and Hõy, T. (eds). Selected British Columbia mineral deposit profiles, Volume 2 – Metallic deposits. Open File 1996–13. British Columbia Ministry of Energy and Mines, Victoria, BC, 120 pp.
  • Panteleyev, A. 1996b. Epithermal Au–Ag–Cu: high sulphidation. 37–39. In Lefebure, D. V. and Hõy, T. (eds). Selected British Columbia mineral deposit profiles, Volume 2 – Metallic deposits. Open File 1996–13. British Columbia Ministry of Energy and Mines, Victoria, BC, 120 pp.
  • Pastars, D. 2000. Mineralogy and microfacies of the Late Pleistocene Omapere silica sinter, Northland, New Zealand. Unpublished MSc thesis, University of Auckland, 112 pp.
  • Pigniolo, A. R. 1995. The Rainbow Rock wonderstone source and its place in regional material distribution studies. Proceedings of the Society for California Archaeology, 8, 123–131.
  • Plahuta, J. T. 1987. Geology of the Buckhorn mine, Eureka County, Nevada. 333–337. In Johnson, J. L. (ed.). Bulk mineable precious metal deposits of the western United States: guidebook for field trips. Geological Society of Nevada, Reno, NV, 418 pp.
  • Pole, M. 1992. Early Miocene flora of the Manuherikia Group, New Zealand. 2. Conifers. Journal of the Royal Society of New Zealand, 22, 287–302.
  • Powell, C. L. 1994. The palaeoenvironments of the Rhynie cherts. Unpublished PhD thesis, University of Aberdeen, 321 pp.
  • Powell, C. L., Trewin, N. H. and Edwards, D. 2000. Palaeoecology and plant succession in a borehole through the Rhynie cherts, Lower Old Red Sandstone, Scotland. 439–457. In Friend, P. F. and Williams, B. P. J. (eds). New Perspectives on the Old Red Sandstone. Geological Society, London, Special Publication, 180, 610 pp.
  • Prychid, C., Rudall, P. and Gregory, M. 2004. Systematics and biology of silica bodies in monocotyledons. Botanical Review, 69, 377–440.
  • Purdy, B. G., Macdonald, S. E. and Lieffers, V. J. 2005. Naturally saline boreal communities as models for reclamation of saline oil sand tailings. Restoration Ecology, 13, 667–677.
  • Qi, H., Hu, R., Su, W., Qi, L. and Feng, J. 2004. Continental hydrothermal sedimentary siliceous rock and genesis of superlarge germanium (Ge) deposit hosted in coal: a study from the Lincang Ge deposit, Yunnan, China. Science in China Series D: Earth Sciences, 47, 973–984.
  • Rai, P. K. 2009. Heavy metal phytoremediation from aquatic ecosystems with special reference to macrophytes. Critical Reviews in Environmental Science and Technology, 39, 697–753.
  • Retallack, G. J. 1975. The life and times of a Triassic lycopod. Alcheringa, 1, 3–29.
  • Retallack, G. J. 1997. Earliest Triassic origin of Isoetes and quillwort evolutionary radiation. Journal of Paleontology, 71, 500–521.
  • Rex, G. M. 1986. The preservation and palaeoecology of the Lower Carboniferous silicified plant deposits at Esnost, near Autun, France. Geobios, 19, 773–800.
  • Richer, M., Tosdal, R. M. and Ullrich, T. 2009. Volcanic framework of the Pliocene El Dorado low-sulfidation epithermal gold district, El Salvador. Economic Geology, 104, 3–18.
  • Rimstidt, J. D. and Cole, D. R. 1983. Geothermal mineralization; I, the mechanism of formation of the Beowawe, Nevada, siliceous sinter deposit. American Journal of Science, 283, 861–875.
  • Rodgers, K. A., Browne, P. R. L., Buddle, T. F., Cook, K. L., Greatrex, R. A., Hampton, W. A., Herdianita, N. R., Holland, G. R., Lynne, B. Y., Martin, R., Newton, Z., Pastars, D., Sannazarro, K. L. and Teece, C. I. A. 2004. Silica phases in sinters and residues from geothermal fields of New Zealand. Earth-Science Reviews, 66, 1–61.
  • Romero-Aranda, M. R., Jurado, O. and Cuartero, J. 2006. Silicon alleviates the deleterious salt effect on tomato plant growth by improving plant water status. Journal of Plant Physiology, 163, 847–855.
  • Rowland, J. V. and Sibson, R. H. 1998. Stress-controlled hydrothermal fluid flow in basement greywacke, Kuaotunu, Coromandel Peninsula, New Zealand. 285–290. In Simmons, S. F., Morgan, O. E. and Dunstall, M. G. (eds). Proceedings of the 20th New Zealand Geothermal Workshop. University of Auckland, 320 pp.
  • Sa'ad, N. S., Artanti, R. and Dewi, T. 2011. Phyto-remediation for rehabilitation of agricultural land contaminated by cadmium and copper. Phyto-Remediation for Rehabilitation, 4, 17–21.
  • Saunders, J. A., Unger, D. L., Kamenov, G. D., Fayek, M., Hames, W. E. and Utterback, W. C. 2008. Genesis of Middle Miocene Yellowstone hotspot-related bonanza epithermal Au–Ag deposits, Northern Great Basin, USA. Mineralium Deposita, 43, 715–734.
  • Scott, A. C., Brown, R., Galtier, J. and Meyer-Berthaud, B. 1994. Fossil plants from the Viséan of East Kirkton, West Lothian, Scotland. Transactions of the Royal Society of Edinburgh: Earth Sciences, 84, 249–260.
  • Shukla, P. K., Srivastava, G. K. and Shukla, S. K. 2002. The quillworts (Isoetes) of India: distribution, endemism and species radiation. Biodiversity and Conservation, 11, 959–973.
  • Siegel, B. Z. and Siegel, S. M. 1982. Mercury content of Equisetum plants around Mount St. Helens one year after the major eruption. Science, 216, 292–293.
  • Siegel, S. M., Siegel, B. Z., Lipp, C., Kruckeberg, A., Towers, G. H. N. and Warren, H. 1985. Indicator plant – soil mercury patterns in a mercury-rich mining area of British Columbia. Water, Air, and Soil Pollution, 25, 73–85.
  • Sillitoe, R. H. and Hedenquist, J. W. 2003. Linkages between volcanotectonic settings, ore-fluid compositions, and epithermal precious metal deposits. 315–343. In Simmons, S. F. and Graham, I. (eds). Volcanic, geothermal, and ore-forming fluids: rulers and witnesses of processes within the Earth. Society of Economic Geologists, Special Publication 10, 343 pp.
  • Simpson, M. P. and Mauk, J. L. 2011. Hydrothermal alteration and veins at the epithermal Au–Ag deposits and prospects of the Waitekauri area, Hauraki goldfield, New Zealand. Economic Geology, 106, 945–973.
  • Sturchio, N. C., Dunkley, N. and Smith, M. 1993. Climate-driven variations in geothermal activity in the northern Kenya rift valley. Nature, 362, 233–234.
  • Swain, P. C. and Kearsley, J. B. 2001. Classification of the natural communities of Massachusetts. Natural Heritage & Endangered Species Program, Division of Fisheries & Wildlife, Westborough, MA, 107 pp.
  • Szmeja, J., Banas, K. and Bociag, K. 1997. Ecological conditions and tolerance limits of isoetids along the southern Baltic coast. Ekologia Polska, 45, 343–359.
  • Taylor, T. N., Hass, H., Krings, M., Klavins, S. D. and Kerp, H. 2004. Fungi in the Rhynie chert: a view from the dark side. Transactions of the Royal Society of Edinburgh: Earth Sciences, 94, 457–473.
  • Taylor, W., Pigg, K. B. and Farmer, J. A. 2006. Silicified Pleistocene monocots from Clearlake, California and their value to understanding ancient hydrothermal springs. Abstracts 23rd Annual Midcontinent Paleobotanical Colloquium March 10–12, 2006. Florida Museum of Natural History, University of Florida, Gainesville, Florida.
  • Thomsen, D., Marsden, I. D. and Sparrow, A. D. 2005. A field experiment to assess the transplant success of salt marsh plants into tidal wetlands. Wetlands Ecology and Management, 13, 489–497.
  • Trenholm, L. E., Datnoff, L. E. and Nagata, R. T. 2004. Influence of silicon on drought and shade tolerance of St. Augustinegrass. HortTechnology, 14, 487–490.
  • Trewin, N. H. 1996. The Rhynie cherts: an early Devonian ecosystem preserved by hydrothermal activity. 131–149. In Bock, G. R. and Goode, J. (eds). Evolution of hydrothermal ecosystems on Earth (and Mars?). Ciba Foundation Symposium 202. John Wiley and Sons, Chichester, UK, 335 pp.
  • Trewin, N. H. and Rice, C. M. 1992. Stratigraphy and sedimentology of the Devonian Rhynie chert locality. Scottish Journal of Geology, 28, 37–47.
  • Trewin, N. H. and Rice, C. M. (eds). 2004. The Rhynie hot springs system: geology, biota and mineralisation. Transactions of the Royal Society of Edinburgh: Earth Sciences, 94, 246 pp.
  • Trewin, N. H. and Wilson, E. 2004. Correlation of the Early Devonian Rhynie chert beds between three boreholes at Rhynie, Aberdeenshire, Scotland. Scottish Journal of Geology, 40, 73–81.
  • Trewin, N. H., Fayers, S. R. and Kelman, R. 2003. Subaqueous silicification of the contents of small ponds in an Early Devonian hot spring complex, Rhynie, Scotland. Canadian Journal of Earth Sciences, 40, 1697–1712.
  • Tuna, A. L., Kaya, C., Higgs, D., Murillo-Amador, B., Aydemir, S. and Girgin, A. R. 2008. Silicon improves salinity tolerance in wheat plants. Environmental and Experimental Botany, 62, 10–16.
  • Uysal, I. T., Gasparon, M., Bolhar, R., Zhao, J.-X., Feng, Y.-X. and Jones, G. 2011. Trace element composition of near-surface silica deposits – a powerful tool for detecting hydrothermal mineral and energy resources. Chemical Geology, 280, 154–169.
  • Van der Hagen, H. G. J. M., Geelen, L. H. W. T. and De Vries, C. N. 2008. Dune slack restoration in Dutch mainland coastal dunes. Journal for Nature Conservation, 16, 1–11.
  • Visoottiviseth, P., Francesconi, K. and Sridokchan, W. 2002. The potential of Thai indigenous plant species for the phytoremediation of arsenic contaminated land. Environmental Pollution, 118, 453–461.
  • Walter, M. R. 1996. Ancient hydrothermal ecosystems on Earth: a new palaeobiological frontier. 112–130. In Bock, G. R. and Goode, J. (eds). Evolution of hydrothermal ecosystems on Earth (and Mars?). Ciba Foundation Symposium 202. John Wiley and Sons, Chichester, 335 pp.
  • Walter, M. R., Des Marais, D., Farmer, J. D. and Hinman, N. W. 1996. Lithofacies and biofacies of mid-Paleozoic thermal spring deposits in the Drummond Basin, Queensland, Australia. Palaios, 11, 497–518.
  • Walter, M. R., McLoughlin, S., Drinnan, A. N. and Farmer, J. D. 1998. Palaeontology of Devonian thermal spring deposits, Drummond Basin, Australia. Alcheringa, 22, 285–314.
  • Wang, L., Nie, Q., Li, M., Zhang, F., Zhuang, J., Yang, W., Li, T. and Wang, Y. 2005. Biosilicified structures for cooling plant leaves: a mechanism of highly efficient midinfrared thermal emission. Applied Physics Letters, 87, 194105.
  • Wardle, R. J. 2007. Mineral commodities of Newfoundland and Labrador: gold. Geological Survey of Newfoundland and Labrador, St. John's, NL, Geological Survey Mineral Commodities Series Number 4, 15 pp.
  • Wellman, C. H. 2004. Palaeoecology and palaeophytogeography of the Rhynie chert plants: evidence from integrated analysis of in situ and dispersed spores. Proceedings of the Royal Society of London, B 271, 985–992.
  • Wellman, C. H. 2006. Spore assemblages from the Lower Devonian ‘Lower Old Red Sandstone’ deposits of the Rhynie outlier, Scotland. Transactions of the Royal Society of Edinburgh: Earth Sciences, 97, 167–211.
  • White, D. E., Hutchinson, R. A. and Keith, T. E. C. 1988. The geology and remarkable thermal activity of Norris Geyser Basin, Yellowstone National Park, Wyoming. USGS Professional Paper 1456, 84 pp.
  • White, N. C., Wood, D. G. and Lee, M. C. 1989. Epithermal sinters of Paleozoic age in north Queensland, Australia. Geology, 17, 718–722.
  • Williams, W. D. 1991. Chinese and Mongolian saline lakes: a limnological overview. Hydrobiologia, 210, 39–66.
  • Wood, D. G., Porter, R. G. and White, N. C. 1990. Geological features of some Paleozoic epithermal gold occurrences in northeastern Queensland. Australian Journal of Geochemical Exploration, 36, 413–443.
  • Xanadu Mines Ltd. 2011. Annual Report 2011. Darlinghurst, New South Wales 61 pp.
  • Xu, C.-X., Liu, Y.-L., Zheng, Q.-S. and Liu, Z.-P. 2006. Silicate improves growth and ion absorption and distribution in Aloe vera under salt stress. Journal of Plant Physiology and Molecular Biology, 32, 73–78.
  • Yeo, A. R., Flowers, S. A., Rao, G., Welfare, K., Senanayake, N. and Flowers, T. J. 2002. Silicon reduces sodium uptake in rice (Oryza sativa L.) in saline conditions and this is accounted for by a reduction in the transpirational bypass flow. Plant, Cell and Environment, 22, 559–565.
  • Zamuner, A. B., Channing, A, Sagasti, A. J., Edwards, D. and Guido, D. 2011. A new Middle–Late Jurassic flora associated with the San Agustín hot-spring deposit, southern Patagonia, Argentina. 281–284. In ABSTRACTS. XXII Congresso Brasileiro de Paleontologia, Natal, 23–28 October, 2011, 750 pp.
  • Zhang, Z., Zhang, B., Chen, Y. and Zhang, X. 2000. The Lanmuchang Tl deposit and its environmental geochemistry. Science in China Series D: Earth Sciences, 43, 50–62.
  • Zhu, Z., Wei, G., Li, J., Qian, Q. and Yu, J. 2004. Silicon alleviates salt stress and increase antioxidant enzymes activity in leaves of salt-stressed cucumber. Journal of Plant Science, 167, 527–533.
  • Zimmerman, B. S. and Larson, P. B. 1994. Epithermal gold mineralization in a fossil hot spring system, Red Butte, Oregon. Economic Geology, 89, 1983–2002.
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