Paleoenvironment reconstruction in extreme climates using organic geochemical investigations
Thesis: Ph. D., Massachusetts Institute of Technology, Department of Earth, Atmospheric, and Planetary Sciences, 2016. Cataloged from PDF version of thesis. Includes bibliographical references. Organic geochemistry provides researchers with an extensive suite of tools for reconstructing past environ...
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ftmit:oai:dspace.mit.edu:1721.1/107109 2023-06-11T04:09:48+02:00 Paleoenvironment reconstruction in extreme climates using organic geochemical investigations Williams, Ross H. (Ross Hamilton) Roger E. Summons. Massachusetts Institute of Technology. Department of Earth, Atmospheric, and Planetary Sciences. 2016 178 pages application/pdf http://hdl.handle.net/1721.1/107109 eng eng Massachusetts Institute of Technology http://hdl.handle.net/1721.1/107109 971495067 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. http://dspace.mit.edu/handle/1721.1/7582 Earth Atmospheric and Planetary Sciences Thesis 2016 ftmit 2023-05-29T08:38:09Z Thesis: Ph. D., Massachusetts Institute of Technology, Department of Earth, Atmospheric, and Planetary Sciences, 2016. Cataloged from PDF version of thesis. Includes bibliographical references. Organic geochemistry provides researchers with an extensive suite of tools for reconstructing past environments. Using these tools, a set of unique locations situated in climatic extremes have been investigated. During the Early Cenozoic the planet was much warmer than today. In addition to this higher background temperature a series of rapid warming events occurred termed hyperthermals. The largest of these, the Paleocene-Eocene Thermal Maximum is perhaps the best analog to modern day anthropogenic climate change. It is paramount to understand the global effects of this event to elucidate potential changes in our near future. To further this area of research two very different regions were chosen to seek out potential deposits that record the hyperthermals. First, in the Cambay Basin of Western India an extensive core was taken during exploration for lignite deposits. This site would have been near the equator during the time of deposition, a region that is important yet not well established in the current literature pertaining to the hyperthermals. Biostratigraphy and palynology combined with bulk organic carbon isotope records reveals that the lowermost portion of the core likely contains the hyperthermal events. Compound-specific isotopic investigation across multiple realms reveals potential variability of carbon in the ocean-atmosphere system that was then complemented by examination of the corresponding kerogens through application of pyrolysis gas chromatography-mass spectrometry. Expanding upon this study the Canadian High Arctic was assessed in the form of paleosols from Banks Island and shales from Strathcona Fiord. Biomarker distributions revealed a shift in environmental conditions from marine to coastal environments from the Paleocene into the Eocene. Hydrogen isotopic investigation reveals that the ... Thesis Arctic Banks Island Climate change DSpace@MIT (Massachusetts Institute of Technology) Arctic Strathcona ENVELOPE(99.200,99.200,-67.417,-67.417) Strathcona Fiord ENVELOPE(-82.915,-82.915,78.719,78.719) |
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DSpace@MIT (Massachusetts Institute of Technology) |
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language |
English |
topic |
Earth Atmospheric and Planetary Sciences |
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Earth Atmospheric and Planetary Sciences Williams, Ross H. (Ross Hamilton) Paleoenvironment reconstruction in extreme climates using organic geochemical investigations |
topic_facet |
Earth Atmospheric and Planetary Sciences |
description |
Thesis: Ph. D., Massachusetts Institute of Technology, Department of Earth, Atmospheric, and Planetary Sciences, 2016. Cataloged from PDF version of thesis. Includes bibliographical references. Organic geochemistry provides researchers with an extensive suite of tools for reconstructing past environments. Using these tools, a set of unique locations situated in climatic extremes have been investigated. During the Early Cenozoic the planet was much warmer than today. In addition to this higher background temperature a series of rapid warming events occurred termed hyperthermals. The largest of these, the Paleocene-Eocene Thermal Maximum is perhaps the best analog to modern day anthropogenic climate change. It is paramount to understand the global effects of this event to elucidate potential changes in our near future. To further this area of research two very different regions were chosen to seek out potential deposits that record the hyperthermals. First, in the Cambay Basin of Western India an extensive core was taken during exploration for lignite deposits. This site would have been near the equator during the time of deposition, a region that is important yet not well established in the current literature pertaining to the hyperthermals. Biostratigraphy and palynology combined with bulk organic carbon isotope records reveals that the lowermost portion of the core likely contains the hyperthermal events. Compound-specific isotopic investigation across multiple realms reveals potential variability of carbon in the ocean-atmosphere system that was then complemented by examination of the corresponding kerogens through application of pyrolysis gas chromatography-mass spectrometry. Expanding upon this study the Canadian High Arctic was assessed in the form of paleosols from Banks Island and shales from Strathcona Fiord. Biomarker distributions revealed a shift in environmental conditions from marine to coastal environments from the Paleocene into the Eocene. Hydrogen isotopic investigation reveals that the ... |
author2 |
Roger E. Summons. Massachusetts Institute of Technology. Department of Earth, Atmospheric, and Planetary Sciences. |
format |
Thesis |
author |
Williams, Ross H. (Ross Hamilton) |
author_facet |
Williams, Ross H. (Ross Hamilton) |
author_sort |
Williams, Ross H. (Ross Hamilton) |
title |
Paleoenvironment reconstruction in extreme climates using organic geochemical investigations |
title_short |
Paleoenvironment reconstruction in extreme climates using organic geochemical investigations |
title_full |
Paleoenvironment reconstruction in extreme climates using organic geochemical investigations |
title_fullStr |
Paleoenvironment reconstruction in extreme climates using organic geochemical investigations |
title_full_unstemmed |
Paleoenvironment reconstruction in extreme climates using organic geochemical investigations |
title_sort |
paleoenvironment reconstruction in extreme climates using organic geochemical investigations |
publisher |
Massachusetts Institute of Technology |
publishDate |
2016 |
url |
http://hdl.handle.net/1721.1/107109 |
long_lat |
ENVELOPE(99.200,99.200,-67.417,-67.417) ENVELOPE(-82.915,-82.915,78.719,78.719) |
geographic |
Arctic Strathcona Strathcona Fiord |
geographic_facet |
Arctic Strathcona Strathcona Fiord |
genre |
Arctic Banks Island Climate change |
genre_facet |
Arctic Banks Island Climate change |
op_relation |
http://hdl.handle.net/1721.1/107109 971495067 |
op_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. http://dspace.mit.edu/handle/1721.1/7582 |
_version_ |
1768383794636652544 |