Microtektites and mass extinctions - Evidence for a late Devonian asteroid impact

Details Microtektites and mass extinctions - Evidence for a late Devonian asteroid impact Microtektites and mass extinctions - Evidence for a late Devonian asteroid impact

Aug 1992

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1992sci...257.1102c&link_type=abstract

Science (ISSN 0036-8075), vol. 257, no. 5073, Aug. 21, 1992, p. 1102-1104. Research supported by Institut Royal des Sciences Nat

Biology

15

Asteroids, Extinction, Geochronology, Tektites, Chemical Composition, Hypervelocity Impact, Infrared Spectroscopy, Paleobiology

Scientific paper

Glass spherules, similar to microtektites, have been found near the Frasnian-Famennian boundary (F/F) (Upper Devonian) at Senzeilles, Belgium, contemporaneous with one of the largest marine mass extinctions of the Phanerozoic. These spherules exhibit a wide range of compositions and display teardrop, dumbbell, and compound morphologies analogous to microtektites. In addition, they lack crystallites, have few or no vesicles, and have a low content of volatile material. These characteristics are supportive of an impact origin. The Siljan Ring (Sweden) and Charlevoix structure (Quebec, Canada) are candidate craters of this age. The presence of microtektites near the F/F boundary supports the hypothesis that an impact caused the Upper Devonian worldwide benthic mass extinctions.

Affiliated with

Also associated with

No associations

Rating

Microtektites and mass extinctions - Evidence for a late Devonian asteroid impact 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 Microtektites and mass extinctions - Evidence for a late Devonian asteroid impact, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Microtektites and mass extinctions - Evidence for a late Devonian asteroid impact will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFWR-SCP-O-1169006