Petrology and shock metamorphism of Pampa del Infierno chondrite

Details Petrology and shock metamorphism of Pampa del Infierno chondrite Petrology and shock metamorphism of Pampa del Infierno chondrite

Oct 1982

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1982gecoa..46.1903b&link_type=abstract

Geochimica et Cosmochimica Acta, vol. 46, Oct. 1982, p. 1903-1911.

Computer Science

2

Chondrites, Impact Melts, Metamorphism (Geology), Meteoritic Composition, Petrography, Basalt, Chondrule, Mineralogy, Shock Waves

Scientific paper

The petrography, mineral chemistry, and shock metamorphic history of the Pampa del Infierno chondrite are investigated. The various shock metamorphic features in the meteorite are used in conjunction with experimental shock-wave data to set limits to the minimum peak pressure attained during shock metamorphism. Rare chondrules and two types of dark-colored clasts occur in a light-colored matrix in the meteorite. Granular clasts display shock metamorphic features produced mainly by deformation, such as mosaicism, undulatory extinction, and fracturing. Partial melting in the granular clasts is manifested by the presence of selvages of mafic glass with troilite-iron eutectic intergrowths around remnants of low-Ca pyroxene and plagioclase glass with skeletal poikilitic inclusions of olivine. Clasts with spinifex texture are believed to have crystallized from a supercooled, impact-generated, ultramafic melt of the host chondrite or a chondritic source of similar composition. The shock-wave data suggest metamorphism by impact at a minimum peak pressure greater than 300 kbar.

Affiliated with

Also associated with

No associations

Rating

Petrology and shock metamorphism of Pampa del Infierno chondrite 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 Petrology and shock metamorphism of Pampa del Infierno chondrite, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Petrology and shock metamorphism of Pampa del Infierno chondrite will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFWR-SCP-O-1030286