Other
Scientific paper
Jun 1991
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1991gecoa..55.1737k&link_type=abstract
Geochimica et Cosmochimica Acta (ISSN 0016-7037), vol. 55, June 1991, p. 1737-1742.
Other
9
Cretaceous-Tertiary Boundary, Glass, Impact Melts, Sediments, Spherules, Chemical Composition, Haiti, Photomicrographs
Scientific paper
Partially to wholly altered glass spherules produced by impact-induced shock melting have been found in the K/T boundary sediments of Haiti which also contain grains of shocked quartz. The relic glass has an approximately dacitic composition, and although grossly similar in composition to most previously described tektite glasses, it is slightly enriched in Ca and slightly depleted in Si, suggesting the Haitian glass was produced either from a target with a greater fraction of carbonate and anhydrite lithologies and fewer silicate units than the targets from which most other tektites were produced, and/or from one with a significant mafic component. The composition of the glass can best be reconciled with a continental margin terrane, consistent with studies of shocked mineral phases reported elsewhere. The thickness of the deposit in which the impact spherules occur indicates the source of the ejecta was in the proto-Caribbean region.
Boynton William V.
Kring David A.
No associations
LandOfFree
Altered spherules of impact melt and associated relic glass from the K/T boundary sediments in Haiti 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 Altered spherules of impact melt and associated relic glass from the K/T boundary sediments in Haiti, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Altered spherules of impact melt and associated relic glass from the K/T boundary sediments in Haiti will most certainly appreciate the feedback.
Profile ID: LFWR-SCP-O-1283260