Location

Portland State University

Start Date

7-5-2019 11:00 AM

End Date

7-5-2019 1:00 PM

Subjects

Chondrites (Meteorites) -- Deformation, Electrons -- Diffraction, Chondrites (Meteorites) -- Analysis, Olivine

Abstract

We studied ordinary chondrites with cluster chondrite lithologies using electron backscatter diffraction to measure the temperatures of their olivine grains during deformation. Samples analyzed with the technique are shock classified as S1 and are type 3, so the deformation analyzed is inferred to represent the temperatures of the chondrules during accretional deformation. It was found that the studied samples are of a mixture of chondrules at mostly hot temperatures (>850°C) and some at cold.

Persistent Identifier

https://archives.pdx.edu/ds/psu/28660

Included in

Geology Commons

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May 7th, 11:00 AM May 7th, 1:00 PM

Cluster Chondrite Accretion Temperatures Determined with Electron Backscatter Diffraction

Portland State University

We studied ordinary chondrites with cluster chondrite lithologies using electron backscatter diffraction to measure the temperatures of their olivine grains during deformation. Samples analyzed with the technique are shock classified as S1 and are type 3, so the deformation analyzed is inferred to represent the temperatures of the chondrules during accretional deformation. It was found that the studied samples are of a mixture of chondrules at mostly hot temperatures (>850°C) and some at cold.