Mathematics – Logic
Scientific paper
Dec 1999
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1999ppmto..18..405s&link_type=abstract
Publ. Purple Mt. Obs., Vol. 18, No. 4, p. 405 - 417
Mathematics
Logic
Impact Phenomena: Earth, Impact Phenomena: Near-Earth Objects
Scientific paper
This review is an attempt to address the correlation between mass extinction and impacts of near-Earth objects (NEO) with observational evidences. At first the authors will briefly review the researches on the periodicity of mass extinctions. The periodicity has withstood a variety of paleontologic data and statistical tests, so that the authors regard it as an indirect observational evidence. Then through use of the shocked mineralogic evidences at extinction boundaries as well as the correlation analysis of large impact crater ages and stage boundary ages, the authors will show that mass extinctions usually accompanied by NEO impacts. Finally using the geological evidences at extinction boundaries, the authors will describe the global ecological disaster caused by NEO impacts.
Su Yang
Xia Yi
Zhang Yanan
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