Shock effects of the Leoville CV carbonaceous chondrite - A transmission electron microscope study

Details Shock effects of the Leoville CV carbonaceous chondrite - A transmission electron microscope study Shock effects of the Leoville CV carbonaceous chondrite - A transmission electron microscope study

Dec 1992

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1992e%26psl.114..159n&link_type=abstract

Earth and Planetary Science Letters (ISSN 0012-821X), vol. 114, no. 1, p. 159-170.

Computer Science

21

Carbonaceous Chondrites, Chemical Composition, Chondrule, Enstatite, Olivine, Pyroxenes, Deformation, Petrography, Shock Waves, Transmission Electron Microscopy

Scientific paper

Leoville is a CV carbonaceous chondrite with a strong preferred orientation of the elongated chondrules and inclusions. The texture probably resulted from deformation. Olivine grains in most chondrules show undulatory extinction and fine planar fractures. Transmission electron microscope observations reveal that most olivine grains in the matrix exhibit high densities of micro-cracks and dislocations with Burgers vector. Enstatite in the matrix has numerous dislocations and lamellae that are caused by (100) stacking faults. These microtextures are characteristic of deformation at high strain rates and are very similar to those in shocked ordinary chondrites and experimentally shocked materials. Therefore, this suggests that the chondrules and matrix in the Leoville experienced shock, probably after accretion to the meteorite parent body. Comparison of the textures to those in experimentally shocked materials suggests that the shock pressures experienced by Leoville were in the range 5-20 Gpa. We believe that multiple impacts by such relatively mild shock pressures compacted the Leoville meteorite and caused the deformation of chondrules and the foliation.

Affiliated with

Also associated with

No associations

Rating

Shock effects of the Leoville CV carbonaceous chondrite - A transmission electron microscope study does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.

If you have personal experience with Shock effects of the Leoville CV carbonaceous chondrite - A transmission electron microscope study, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Shock effects of the Leoville CV carbonaceous chondrite - A transmission electron microscope study will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFWR-SCP-O-1114305