Humidity estimate for the middle Eocene Arctic rain forest

Research Article| May 01, 2003 Humidity estimate for the middle Eocene Arctic rain forest A. Hope Jahren; A. Hope Jahren 1Department of Earth and Planetary Sciences, Johns Hopkins University, Baltimore, Maryland 21218, USA Search for other works by this author on: GSW Google Scholar Leonel Silveira Lobo Sternberg Leonel Silveira Lobo Sternberg 2Department of Biology, University of Miami, Coral Gables, Florida 33124, USA Search for other works by this author on: GSW Google Scholar Geology (2003) 31 (5): 463–466. https://doi.org/10.1130/0091-7613(2003)0312.0.CO;2 Article history received: 14 Oct 2002 rev-recd: 20 Jan 2003 accepted: 22 Jan 2003 first online: 02 Jun 2017 Cite View This Citation Add to Citation Manager Share Icon Share Facebook Twitter LinkedIn MailTo Tools Icon Tools Get Permissions Search Site Citation A. Hope Jahren, Leonel Silveira Lobo Sternberg; Humidity estimate for the middle Eocene Arctic rain forest. Geology 2003;; 31 (5): 463–466. doi: https://doi.org/10.1130/0091-7613(2003)0312.0.CO;2 Download citation file: Ris (Zotero) Refmanager EasyBib Bookends Mendeley Papers EndNote RefWorks BibTex toolbar search Search Dropdown Menu toolbar search search input Search input auto suggest filter your search All ContentBy SocietyGeology Search Advanced Search Abstract The exquisite preservation of fossilized Metasequoia trees that grew near 80°N latitude during the middle Eocene (ca. 45 Ma) in Nunavut, Canada, allowed for δD and δ18O analyses of cellulose, techniques previously restricted to wood <30,000 yr old. From the isotopic results, we determined that the middle Eocene Arctic atmosphere contained ∼2× the water found in the region's atmosphere today. This water vapor contributed to a middle Eocene greenhouse effect that insulated the polar region during dark polar winters. You do not have access to this content, please speak to your institutional administrator if you feel you should have access.