Organosilane occurrence in irghizite samples from the Zhamanshin impact crater, Kazakhstan

Details Organosilane occurrence in irghizite samples from the Zhamanshin impact crater, Kazakhstan Organosilane occurrence in irghizite samples from the Zhamanshin impact crater, Kazakhstan

Sep 2000

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2000m%26ps...35..943z&link_type=abstract

Meteoritics & Planetary Science, vol. 35, no. 5, pp. 943-947 (2000).

Computer Science

2

Scientific paper

The composition of surface deposits on vesicle walls in irghizites (i.e., impact glasses at site) from the Zhamanshin meteorite crater were studied using time of flight secondary ion mass spectrometry (ToF-SIMS). The cavity walls are unique interfaces for condensation of gases from the superheated, high-silica melt during the impact. Initially, signals from the cavity wall are dominated by hydrocarbon fragments whereas the glass fracture face surrounding the cavity gave only signals corresponding to glass components. After 12h in UHV, signals from the cavity wall are dominated by peaks corresponding to fragments normally measured from organo-silanes and organo-siloxanes with the majority of the hydrocarbon signals markedly reduced. Characteristic hydrocarbon fragments are now observed on the glass fracture surface next to the cavity in an annulus around the cavity perimeter. There are also minor signals in this region from organo-silanes and organo-siloxanes. In contrast, four tektites (Australites) (i.e. glassy distal ejecta) gave no organo-silane or organo-siloxane signals after the same preparation and vacuum evaporation procedure. These species appear to be formed only at the impact site where higher levels of organic material are likely to be present in soil and are trapped before evaporation. This appears to be the first report of naturally occurring silicon-organic compounds.

Affiliated with

Also associated with

No associations

Rating

Organosilane occurrence in irghizite samples from the Zhamanshin impact crater, Kazakhstan 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 Organosilane occurrence in irghizite samples from the Zhamanshin impact crater, Kazakhstan, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Organosilane occurrence in irghizite samples from the Zhamanshin impact crater, Kazakhstan will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFWR-SCP-O-1386965