Physics
Scientific paper
Apr 1988
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1988georl..15..357s&link_type=abstract
Geophysical Research Letters (ISSN 0094-8276), vol. 15, April 1988, p. 357-360.
Physics
16
Earth, Tektites, Australasians, Strewn Fields, Source, Origin, Impacts, Asteroids, Craters, Anomalies, Maps, Topography, Position (Location), Gravity Properties, Size, Hypotheses, Analysis, Procedure, Field Studies
Scientific paper
Although there is a preponderance of evidence that tektites were formed by asteroid impacts on the earth, no source crater has been found for the largest and youngest of the strewn fields - the Austalasian strewn field. A combined Seasat/Geos 3 altimeter data set of sea surface heights in the northern portion of the Australasian strewn field has been examined for negative gravity anomalies on the continental shelf and slope which might be related to the source crater for these tektites. A large negative anomaly called the Qui Nhon Slope Anomaly is a sea surface depression of approximately 1.5 meters over an area of 100 km diameter. It corresponds to a gravity anomaly of about -50 mgal. It is proposed that this anomaly may be due to the impact structure that produced the Australasian strewn field.
Marsh James G.
Schnetzler Charles C.
Walter Louis S.
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