Other
Scientific paper
Feb 1987
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1987mnras.224..945l&link_type=abstract
Monthly Notices of the Royal Astronomical Society (ISSN 0035-8711), vol. 224, Feb. 15, 1987, p. 945-951.
Other
7
Asteroids, Cosmic Dust, Encke Comet, Fragmentation, Geochemistry, Hypotheses, Tungusk Meteorite, Abundance, Antarctic Regions, Land Ice, Selenium, Comets, Hypotheses, Geochemistry, Tunguska Event, Composition, Elements, Samples, Terrestrial, Core Samples, Samples, Extraterrestrial, Spherules, Earth, Polar Regions, Ice, Cesium, Antimony, Encke, Parent Bodies, Tin, Enrichment, Anomalies, Comparisons, Element Ratios, Dust
Scientific paper
The theory that a Chiron-like progenitor of both Comet Encke and the Tunguska cosmic body may have fragmented beginning around 22,000 years BP and that debris from this breakup was responsible for producing the high heavy metal concentrations observed in the Late Wisconin stage polar ice is shown to be incorrectly founded. This paper reexamines the geochemical comparison which Clube and Napier (1984) make between the composition of the Tunguska cosmic body and elemental abundances previously reported for a sample of Sn-rich dust retrieved from the Wisconsin section of the Camp Century ice core. No evidence is found that would link these two sources to a common origin. Thus the hypothesis that a cometary breakup was responsible for modulating the earth's climate and perpetuating the last ice age is unfounded. On the other hand, evidence is presented indicating that debris from the Tunguska explosion may be present in a firm layer at Dome C, East Antarctica. Analysis of the geochemical data for this stratum leads to an estimate of 10 to the 6th to 10 to the 7th t for the mass of the Tunguska body, in approximate agreement with previous determinations.
No associations
LandOfFree
The cometary breakup hypothesis re-examined 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 The cometary breakup hypothesis re-examined, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and The cometary breakup hypothesis re-examined will most certainly appreciate the feedback.
Profile ID: LFWR-SCP-O-1013621