Skip to main content

Shock Metamorphism in Ordinary Chondrites: Constraining Pressure and Temperature History

Abstract Shock metamorphism in meteorites constrains the impact histories of asteroids and planets. Shock-induced high-pressure (HP) minerals can provide more precise estimates of shock conditions than shock-induced deformation effects. In this research, I use shock features, particularly HP minerals, in ordinary-chondrite samples to constrain not only shock pressures but also the pressure-temperature-time (P-T-t) paths they experienced.

Highly shocked L5/6 chondrites Acfer 040, Mbale, NWA 091 and Chico and LL6 chondrite NWA 757 were used to investigate a variety of shock pressures and post-shock annealing histories. NWA 757 is the only highly shocked LL chondrite that includes abundant HP minerals. The assemblage of ringwoodite and majoritic ... (more)
Created Date 2016
Contributor Hu, Jinping (Author) / Sharp, Thomas G. (Advisor) / Tyburczy, James A. (Committee member) / Leinenweber, Kurt (Committee member) / Wadhwa, Meenakshi (Committee member) / Zolotov, Mikhail (Committee member) / Arizona State University (Publisher)
Subject Mineralogy / Planetology / Geochemistry / high-pressure mineral / ordinary chondrite / shock metamorphism
Type Doctoral Dissertation
Extent 159 pages
Language English
Reuse Permissions All Rights Reserved
Note Doctoral Dissertation Geological Sciences 2016
Collaborating Institutions Graduate College / ASU Library
Additional Formats MODS / OAI Dublin Core / RIS

  Full Text
4.0 MB application/pdf
Download Count: 2687

Description Dissertation/Thesis