{"id":{"repo_id":"mit","oai_identifier":"oai:dspace.mit.edu:1721.1/114103"},"canonical_url":"https://search.dev.ndltd.org/etd/mit/oai:dspace.mit.edu:1721.1/114103","repository":{"repo_id":"mit","name":"MIT","base_url":"https://dspace.mit.edu/oai/request"},"display":{"title":"Records of Great Basin precipitation during MIS 11 from two Lehman Cave stalagmites","abstract":"Trace elements (Mg/Ca and Sr/Ca) and stable isotopes ([delta]13C and [delta]18O) were measured in two coeval stalagmites, LC3 and BT1, from the Lehman Caves, Nevada. BT1 spans 388 to 384 ka. The LC3 record is split into two parts due to a hiatus observed through fluorescent imaging. The section prior to the hiatus spans 411 ka to 402 ka. The post-hiatus section of the stalagmite has a single age of 383 ka; an age model cannot be constructed for this part of the record. These stalagmites span Marine Isotope Stage 11 (MIS 11), a long interglacial that occurred around 424-374 ka. Comparison with more recent stalagmite records has shown prior calcite precipitation to be the dominant control on Mg/Ca and [delta]13C in the cave. The trace element and stable isotope records obtained point to an arid climate in the Great Basin during MIS 11.","abstract_html":"Trace elements (Mg/Ca and Sr/Ca) and stable isotopes ([delta]13C and [delta]18O) were measured in two coeval stalagmites, LC3 and BT1, from the Lehman Caves, Nevada. BT1 spans 388 to 384 ka. The LC3 record is split into two parts due to a hiatus observed through fluorescent imaging. The section prior to the hiatus spans 411 ka to 402 ka. The post-hiatus section of the stalagmite has a single age of 383 ka; an age model cannot be constructed for this part of the record. These stalagmites span Marine Isotope Stage 11 (MIS 11), a long interglacial that occurred around 424-374 ka. Comparison with more recent stalagmite records has shown prior calcite precipitation to be the dominant control on Mg/Ca and [delta]13C in the cave. The trace element and stable isotope records obtained point to an arid climate in the Great Basin during MIS 11.","abstract_has_math":false,"creators":["Neary, Ashling"],"institution":"Massachusetts Institute of Technology","degree_name":null,"degree_level":null,"degree_discipline":null,"degree_department":"Massachusetts Institute of Technology. Department of Earth, Atmospheric, and Planetary Sciences.","school":null,"contributors":[],"advisors":["David McGee."],"committee_chairs":[],"committee_members":[],"year":2016,"date_issued":"2016","date_published":"2016","updated_at":"2026-07-22T22:21:35Z","subjects":["Earth, Atmospheric, and Planetary Sciences."],"languages":["eng"],"rights":["MIT theses are protected by copyright. They may be viewed, downloaded, or printed from this source but further reproduction or distribution in any format is prohibited without written permission."],"rights_urls":["http://dspace.mit.edu/handle/1721.1/7582"],"identifier_entries":[]},"links":{"outbound_url":"http://hdl.handle.net/1721.1/114103","outbound_label":"Handle","outbound_source":"dc:identifier.uri"},"metadata_groups":[{"id":"people","label":"People","entries":[{"key":"dc:contributor.advisor","label":"Advisor","values":["David McGee."]},{"key":"dc:contributor.department","label":"Department","values":["Massachusetts Institute of Technology. Department of Earth, Atmospheric, and Planetary Sciences."]},{"key":"dc:contributor.other","label":"Dc Contributor Other","values":["Massachusetts Institute of Technology. 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They may be viewed, downloaded, or printed from this source but further reproduction or distribution in any format is prohibited without written permission."]},{"key":"dc:rights.uri","label":"Rights URI","values":["http://dspace.mit.edu/handle/1721.1/7582"]}]},{"id":"identifiers","label":"Identifiers","entries":[{"key":"dc:identifier.uri","label":"Identifier URI","values":["http://hdl.handle.net/1721.1/114103"]}]},{"id":"additional","label":"Additional Metadata","entries":[{"key":"dc:description","label":"Description","values":["Thesis: S.B., Massachusetts Institute of Technology, Department of Earth, Atmospheric, and Planetary Sciences, 2016.","Cataloged from PDF version of thesis.","Includes bibliographical references (pages 26-29)."]},{"key":"dc:description.abstract","label":"Abstract","values":["Trace elements (Mg/Ca and Sr/Ca) and stable isotopes ([delta]13C and [delta]18O) were measured in two coeval stalagmites, LC3 and BT1, from the Lehman Caves, Nevada. BT1 spans 388 to 384 ka. The LC3 record is split into two parts due to a hiatus observed through fluorescent imaging. The section prior to the hiatus spans 411 ka to 402 ka. The post-hiatus section of the stalagmite has a single age of 383 ka; an age model cannot be constructed for this part of the record. These stalagmites span Marine Isotope Stage 11 (MIS 11), a long interglacial that occurred around 424-374 ka. Comparison with more recent stalagmite records has shown prior calcite precipitation to be the dominant control on Mg/Ca and [delta]13C in the cave. The trace element and stable isotope records obtained point to an arid climate in the Great Basin during MIS 11."]},{"key":"dc:description.degree","label":"Dc Description Degree","values":["S.B."]},{"key":"dc:title","label":"Title","values":["Records of Great Basin precipitation during MIS 11 from two Lehman Cave stalagmites"]}]}],"canonical_facts":{"dc:contributor.advisor":["David McGee."],"dc:contributor.department":["Massachusetts Institute of Technology. Department of Earth, Atmospheric, and Planetary Sciences."],"dc:contributor.other":["Massachusetts Institute of Technology. Department of Earth, Atmospheric, and Planetary Sciences."],"dc:creator":["Neary, Ashling"],"dc:date.accessioned":["2018-03-12T19:30:00Z"],"dc:date.available":["2018-03-12T19:30:00Z"],"dc:date.issued":["2016"],"dc:description":["Thesis: S.B., Massachusetts Institute of Technology, Department of Earth, Atmospheric, and Planetary Sciences, 2016.","Cataloged from PDF version of thesis.","Includes bibliographical references (pages 26-29)."],"dc:description.abstract":["Trace elements (Mg/Ca and Sr/Ca) and stable isotopes ([delta]13C and [delta]18O) were measured in two coeval stalagmites, LC3 and BT1, from the Lehman Caves, Nevada. BT1 spans 388 to 384 ka. The LC3 record is split into two parts due to a hiatus observed through fluorescent imaging. The section prior to the hiatus spans 411 ka to 402 ka. The post-hiatus section of the stalagmite has a single age of 383 ka; an age model cannot be constructed for this part of the record. These stalagmites span Marine Isotope Stage 11 (MIS 11), a long interglacial that occurred around 424-374 ka. Comparison with more recent stalagmite records has shown prior calcite precipitation to be the dominant control on Mg/Ca and [delta]13C in the cave. The trace element and stable isotope records obtained point to an arid climate in the Great Basin during MIS 11."],"dc:description.degree":["S.B."],"dc:identifier.uri":["http://hdl.handle.net/1721.1/114103"],"dc:language.iso":["eng"],"dc:publisher":["Massachusetts Institute of Technology"],"dc:rights":["MIT theses are protected by copyright. They may be viewed, downloaded, or printed from this source but further reproduction or distribution in any format is prohibited without written permission."],"dc:rights.uri":["http://dspace.mit.edu/handle/1721.1/7582"],"dc:subject":["Earth, Atmospheric, and Planetary Sciences."],"dc:title":["Records of Great Basin precipitation during MIS 11 from two Lehman Cave stalagmites"],"dc:type":["Thesis"]},"updated_at":"2026-07-22T22:21:35Z"}