The Elastic Properties of Carbonaceous Chondrites
Asteroids have diverse lithologies as reflected in the range of recovered meteorites. Size distributions of clasts of asteroid 25143 Itokawa (LL-chondrite) and Tagish Lake meteorites (ungrouped C2 carbonaceous chondrite) indicate variation in fragmentation behavior. The steeper size distribution of...
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ftunivcalgary:oai:prism.ucalgary.ca:11023/194 2023-08-27T04:12:17+02:00 The Elastic Properties of Carbonaceous Chondrites Ibrahim, El-Mahadia Hildebrand, Alan 2012 application/pdf http://hdl.handle.net/11023/194 https://doi.org/10.11575/PRISM/28122 eng eng Graduate Studies University of Calgary Calgary Ibrahim, E. (2012). The Elastic Properties of Carbonaceous Chondrites (Unpublished master's thesis). University of Calgary, Calgary, AB. doi:10.11575/PRISM/28122 http://dx.doi.org/10.11575/PRISM/28122 http://hdl.handle.net/11023/194 University of Calgary graduate students retain copyright ownership and moral rights for their thesis. You may use this material in any way that is permitted by the Copyright Act or through licensing that has been assigned to the document. For uses that are not allowable under copyright legislation or licensing, you are required to seek permission. Geology Geophysics Earth Sciences Planetary Science master thesis 2012 ftunivcalgary https://doi.org/10.11575/PRISM/28122 2023-08-06T06:20:35Z Asteroids have diverse lithologies as reflected in the range of recovered meteorites. Size distributions of clasts of asteroid 25143 Itokawa (LL-chondrite) and Tagish Lake meteorites (ungrouped C2 carbonaceous chondrite) indicate variation in fragmentation behavior. The steeper size distribution of the carbonaceous lithology apparently reflects its lower strength. A comparison between the smooth and rough terranes on Itokawa shows that fracturing or intracrater flows apparently eliminate larger fragments. Carbonaceous chondrites’ P- and S-wave velocities, which are indicators of the elastic moduli, exhibit variation with bulk density, petrologic type, and cosmic-ray exposure ages. The hydrated carbonaceous chondrites apparently record damage from collisions with weaker objects as indicated by their decrease of elastic velocities in proportion to their cosmic ray exposure ages. These inferred collisions are frequent relative to exposure ages of other major meteorite groups. These weaker impactors are not sampled in our meteorite collections, but are evidenced in the fireball population. Master Thesis Tagish PRISM - University of Calgary Digital Repository Tagish ENVELOPE(-134.272,-134.272,60.313,60.313) Tagish Lake ENVELOPE(-134.233,-134.233,59.717,59.717) |
institution |
Open Polar |
collection |
PRISM - University of Calgary Digital Repository |
op_collection_id |
ftunivcalgary |
language |
English |
topic |
Geology Geophysics Earth Sciences Planetary Science |
spellingShingle |
Geology Geophysics Earth Sciences Planetary Science Ibrahim, El-Mahadia The Elastic Properties of Carbonaceous Chondrites |
topic_facet |
Geology Geophysics Earth Sciences Planetary Science |
description |
Asteroids have diverse lithologies as reflected in the range of recovered meteorites. Size distributions of clasts of asteroid 25143 Itokawa (LL-chondrite) and Tagish Lake meteorites (ungrouped C2 carbonaceous chondrite) indicate variation in fragmentation behavior. The steeper size distribution of the carbonaceous lithology apparently reflects its lower strength. A comparison between the smooth and rough terranes on Itokawa shows that fracturing or intracrater flows apparently eliminate larger fragments. Carbonaceous chondrites’ P- and S-wave velocities, which are indicators of the elastic moduli, exhibit variation with bulk density, petrologic type, and cosmic-ray exposure ages. The hydrated carbonaceous chondrites apparently record damage from collisions with weaker objects as indicated by their decrease of elastic velocities in proportion to their cosmic ray exposure ages. These inferred collisions are frequent relative to exposure ages of other major meteorite groups. These weaker impactors are not sampled in our meteorite collections, but are evidenced in the fireball population. |
author2 |
Hildebrand, Alan |
format |
Master Thesis |
author |
Ibrahim, El-Mahadia |
author_facet |
Ibrahim, El-Mahadia |
author_sort |
Ibrahim, El-Mahadia |
title |
The Elastic Properties of Carbonaceous Chondrites |
title_short |
The Elastic Properties of Carbonaceous Chondrites |
title_full |
The Elastic Properties of Carbonaceous Chondrites |
title_fullStr |
The Elastic Properties of Carbonaceous Chondrites |
title_full_unstemmed |
The Elastic Properties of Carbonaceous Chondrites |
title_sort |
elastic properties of carbonaceous chondrites |
publisher |
Graduate Studies |
publishDate |
2012 |
url |
http://hdl.handle.net/11023/194 https://doi.org/10.11575/PRISM/28122 |
long_lat |
ENVELOPE(-134.272,-134.272,60.313,60.313) ENVELOPE(-134.233,-134.233,59.717,59.717) |
geographic |
Tagish Tagish Lake |
geographic_facet |
Tagish Tagish Lake |
genre |
Tagish |
genre_facet |
Tagish |
op_relation |
Ibrahim, E. (2012). The Elastic Properties of Carbonaceous Chondrites (Unpublished master's thesis). University of Calgary, Calgary, AB. doi:10.11575/PRISM/28122 http://dx.doi.org/10.11575/PRISM/28122 http://hdl.handle.net/11023/194 |
op_rights |
University of Calgary graduate students retain copyright ownership and moral rights for their thesis. You may use this material in any way that is permitted by the Copyright Act or through licensing that has been assigned to the document. For uses that are not allowable under copyright legislation or licensing, you are required to seek permission. |
op_doi |
https://doi.org/10.11575/PRISM/28122 |
_version_ |
1775356277272084480 |