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Extinct Radionuclides in the Early Solar System: The Initial Solar System Abundance of 60Fe from Angrites and Unequilibrated Ordinary Chondrites and 26Al-26Mg Chronology of Ungrouped Achondrites


Abstract The presence of a number of extinct radionuclides in the early Solar System (SS) is known from geochemical and isotopic studies of meteorites and their components. The half-lives of these isotopes are short relative to the age of the SS, such that they have now decayed to undetectable levels. They can be inferred to exist in the early SS from the presence of their daughter nuclides in meteoritic materials that formed while they were still extant. The extinct radionuclides are particularly useful as fine-scale chronometers for events in the early SS. They can also be used to help constrain the astrophysical setting of the formation of the SS because their short half-lives and unique formation environments yield information about the sources ... (more)
Created Date 2012
Contributor Spivak-Birndorf, Lev Jacob (Author) / Wadhwa, Meenakshi (Advisor) / Hervig, Richard (Committee member) / Timmes, Francis (Committee member) / Williams, Lynda (Committee member) / Anbar, Ariel (Committee member) / Arizona State University (Publisher)
Subject Geochemistry / Geology / 26Al / 60Fe / extinct radionuclides / Ni isotopes
Type Doctoral Dissertation
Extent 193 pages
Language English
Copyright
Reuse Permissions All Rights Reserved
Note Ph.D. Geological Sciences 2012
Collaborating Institutions Graduate College / ASU Library
Additional Formats MODS / OAI Dublin Core / RIS


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Description Dissertation/Thesis