Graduation Semester and Year
2020
Language
English
Document Type
Thesis
Degree Name
Master of Science in Earth and Environmental Science
Department
Earth and Environmental Sciences
First Advisor
Arne Winguth
Second Advisor
Merlynd Nestell
Abstract
The largest mass extinction occurred near the Permian-Triassic boundary (PTB; 251.902 ± 0.024 Ma; Shen et al., 2011), with the demise of more than 90% of marine species and 70% of terrestrial species. This study expands sedimentary data bases created by Rees and others (2002) and the PALEOMAP Project by Scotese (2001). Lithological data was categorized as upper Permian (259.1-254.902 Ma) or Lower Triassic (251.902-247.2 Ma), and the paleogeographic information of the proxies were reconstructed using GPlates 2.0. These lithological proxies are compared with climate sensitivity simulations from the fully coupled comprehensive Community Climate System Model (CCSM3). The climate simulation using radiative forcing 4 x CO2 relative to preindustrial atmospheric levels (or 4 x CO2 PAL) is consistent the reconstruction of Late Permian whereas the most extreme scenario, climate conditions of a 12.7 x CO2 simulation with lower cloud optical depth may be comparable to the hothouse climate of the Early Triassic as inferred from the sedimentary record.
Keywords
Permian, Triassic, Lithological proxies, CCSM3
Disciplines
Earth Sciences | Physical Sciences and Mathematics
License
This work is licensed under a Creative Commons Attribution-NonCommercial-Share Alike 4.0 International License.
Recommended Citation
Brauer, Heather Nicole, "RECOMPILATION OF LITHOLOGICAL PROXIES ACROSS THE PERMIAN-TRIASSIC BOUNDARY" (2020). Earth & Environmental Sciences Theses. 186.
https://mavmatrix.uta.edu/ees_theses/186
Comments
Degree granted by The University of Texas at Arlington