Refining Earth’s Ocean Oxygenation History Using Molybdenum and Thallium Isotopes

منو

" Refining Earth’s Ocean Oxygenation History Using Molybdenum and Thallium Isotopes "
Ostrander, Chadlin M. Anbar, Ariel D.

Document Type	:	Latin Dissertation
Language of Document	:	English
Record Number	:	1114505
Doc. No	:	TLpq2408552000
Main Entry	:	Anbar, Ariel D.
	:	Ostrander, Chadlin M.
Title & Author	:	Refining Earth’s Ocean Oxygenation History Using Molybdenum and Thallium Isotopes\ Ostrander, Chadlin M.Anbar, Ariel D.
College	:	Arizona State University
Date	:	2020
student score	:	2020
Degree	:	Ph.D.
Page No	:	276
Abstract	:	Isotope ratios of some trace metals have proven useful for tracking Earth’s ocean oxygenation history. As the limitations of some of these isotope systems are realized, it becomes increasingly important to develop new and complementary systems. This dissertation examines the utility of molybdenum (δ98Mo) and thallium (δ205Tl) isotope compositions preserved in ancient marine shales to track past ocean oxygenation. My approach is as follows: (1) as an initial exercise, apply the well-established Mo isotope system to a set of ancient shales; (2) validate the use of the newly developed Tl isotope system; and finally (3) examine the potential of applying Mo and Tl isotopes in tandem.
Subject	:	Geochemistry
	:	Isotopes
	:	Molybdenum
	:	Oxygen
	:	Redox
	:	Thallium