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A Quantitative Investigation of Large Geoscientific Datasets : = How Records of Geochronology and Macroevolution Are Distorted by Paleoclimate, Paleoenvironment, and Sediment Preservation.

紀錄類型:	書目-電子資源 : Monograph/item
正題名/作者:	A Quantitative Investigation of Large Geoscientific Datasets :/
其他題名:	How Records of Geochronology and Macroevolution Are Distorted by Paleoclimate, Paleoenvironment, and Sediment Preservation.
作者:	Ye, Shan.
面頁冊數:	1 online resource (594 pages)
附註:	Source: Dissertations Abstracts International, Volume: 84-03, Section: B.
Contained By:	Dissertations Abstracts International84-03B.
標題:	Geology. -
電子資源:	http://pqdd.sinica.edu.tw/twdaoapp/servlet/advanced?query=29391964click for full text (PQDT)
ISBN:	9798845422231

A Quantitative Investigation of Large Geoscientific Datasets : = How Records of Geochronology and Macroevolution Are Distorted by Paleoclimate, Paleoenvironment, and Sediment Preservation.
Ye, Shan.

A Quantitative Investigation of Large Geoscientific Datasets :How Records of Geochronology and Macroevolution Are Distorted by Paleoclimate, Paleoenvironment, and Sediment Preservation. - 1 online resource (594 pages)

Source: Dissertations Abstracts International, Volume: 84-03, Section: B.

Thesis (Ph.D.)--The University of Wisconsin - Madison, 2022.

Includes bibliographical references

A data-driven approach has been used for better evaluating some geoscience-related hypotheses. Large datasets now widely exist in various sub-disciplines of geoscience. Utilizing new tools and analytical methods to synthesize and explore these datasets can help us better address long-standing hypotheses. For this dissertation, I synthesize and explore several large datasets to address scientific questions in paleoclimate, quantitative stratigraphy, and macroevolution. In Chapter 1, 10Be dating data are intersected with modern and time-integrated snow data, revealing that changes in snow properties both throughout time and across space could both affect 10Be dating results. Over the past 22,000 years, snow properties changed significantly, especially during the deglaciation. Applying modern snow data and conditions when addressing the effects of snow shielding on exposure dating is problematic and can lead to large uncertainties in age calculations. Various scenarios of wind sweeping on the snow could also significantly influence results. In Chapter 2, Cretaceous North American dinosaur fossil data are intersected with geologic map and lithological column data from Macrostrat (and a new framework named Mesostrat) to test the long-standing assertion that preservation of sedimentary rock affects the record of dinosaur diversity. These data also reveal that dinosaur diversity in North America peaked in the Campanian and had a decline near the Campanian/Maastrichtian boundary, but during the Maastrichtian, dinosaur diversity stabilized until the K/Pg boundary, where dinosaurs suffered an abrupt extinction. In Chapter 3, the intersection between global Phanerozoic fossil data and geologic map data affirms that North America and western Europe are better sampled than other regions. The surface expressed geology, paleoenvironments, and sampling status of these two regions are used to predict potential fossil recovery in other regions, revealing that the Paleobiology Database samples the geology of other regions approximately 45% as well as it does that of North America and western Europe. In all three chapters, large datasets were aggregated from smaller datasets that had been used to study local-scale phenomena, but when they are aggregated into large datasets, they're useful in addressing problems at larger temporal and spatial scales.

Electronic reproduction.
Ann Arbor, Mich. :
ProQuest,
2023

Mode of access: World Wide Web

ISBN: 9798845422231Subjects--Topical Terms:

516570
Geology.
Subjects--Index Terms:

Cosmogenic nuclide datingIndex Terms--Genre/Form:

542853
Electronic books.

A Quantitative Investigation of Large Geoscientific Datasets : = How Records of Geochronology and Macroevolution Are Distorted by Paleoclimate, Paleoenvironment, and Sediment Preservation.
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504 $a Includes bibliographical references
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