Defect microstructures of minerals as a potential indicator of extremely rapid and episodic exhumation of ultrahigh-pressure metamorphic rock: implication to continental collision orogens

Details Defect microstructures of minerals as a potential indicator of extremely rapid and episodic exhumation of ultrahigh-pressure metamorphic rock: implication to continental collision orogens Defect microstructures of minerals as a potential indicator of extremely rapid and episodic exhumation of ultrahigh-pressure metamorphic rock: implication to continental collision orogens

Sep 2001

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2001e%26psl.192...57h&link_type=abstract

Earth and Planetary Science Letters, Volume 192, Issue 1, p. 57-63.

Physics

2

Scientific paper

Exhumation of subducted continental crust to the Earth's surface was presumably rapid, though at an uncertain rate, to retain coesite, diamond and α-PbO2-type TiO2. Here we report unique defect microstructures of minerals as a potential indicator of a rapid and episodic exhumation process in a fossil fracture zone of coesite eclogite from the Sulu terrain, eastern China having the most negative δ18O value ever reported for eclogite-facies metamorphic rock. Analytical electron microscopy indicates that semi-brittle deformation occurred in kyanite/omphacite/spinel with extensive and unusual fine-scale twin lamellae and that brittle deformation occurred in garnet with hardly healed {110} microcleavages. These unique defect microstructures can be rationalized by a high strain rate at local weakening and deep faulting of continental collision orogens.

Affiliated with

Also associated with

No associations

Rating

Defect microstructures of minerals as a potential indicator of extremely rapid and episodic exhumation of ultrahigh-pressure metamorphic rock: implication to continental collision orogens 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 Defect microstructures of minerals as a potential indicator of extremely rapid and episodic exhumation of ultrahigh-pressure metamorphic rock: implication to continental collision orogens, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Defect microstructures of minerals as a potential indicator of extremely rapid and episodic exhumation of ultrahigh-pressure metamorphic rock: implication to continental collision orogens will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFWR-SCP-O-1488946