CLIMATE-INDEPENDENT PALEOALTIMETRY USING STOMATAL DENSITY IN FOSSIL LEAVES AS A PROXY FOR CO2 PARTIAL PRESSURE
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dc.contributor.author | McElwain J.C. | |
dc.date.accessioned | 2022-04-18T05:17:16Z | |
dc.date.available | 2022-04-18T05:17:16Z | |
dc.date.issued | 2004 | |
dc.identifier | https://www.elibrary.ru/item.asp?id=14494210 | |
dc.identifier.citation | Geology, 2004, 32, 12, 1017-1020 | |
dc.identifier.issn | 0091-7613 | |
dc.identifier.uri | https://repository.geologyscience.ru/handle/123456789/37238 | |
dc.description.abstract | Existing methods for determining paleoelevation are primarily limited by (1) large errors (±450 m), (2) a reliance on incorrect assumptions that lapse rates in terrestrial temperature decrease with altitude in a globally predictable manner, and/or (3) are inherently climate dependent. Here I present a novel paleoelevation tool, based on a predictable, globally conserved decrease in CO 2 partial pressure ( p CO 2 ) with altitude, as indicated by increased stomatal frequency of plant leaves. The approach was validated using historical populations of black oak ( Quercus kelloggii ). These analyses demonstrate highly significant inverse relationships between stomatal frequency and p CO 2 ( r 2 > 0.73), independent of ecological or local climatic variability. As such, this is the first paleobotanical method to be globally applicable and independent of long-term Cenozoic climate change. Further, tests on modern leaves of known elevations indicate that species-specific application to the fossil record of Q. kelloggii (= Q. pseudolyrata ) will yield paleoelevation estimates within average errors of ~±300 m, representing a significant improvement in accuracy over the majority of existing methods. | |
dc.title | CLIMATE-INDEPENDENT PALEOALTIMETRY USING STOMATAL DENSITY IN FOSSIL LEAVES AS A PROXY FOR CO2 PARTIAL PRESSURE | |
dc.type | Статья |
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