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《Chinese Journal of Geophysics》 1999-S1
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SU YANG (Beijing Astronomical Observatory, National Astronomical Observatories , CAS, Beijing 100012, China)  
Thirty percent of 160 are known impact crater structures are buried by postimpact sediment, and there must be much more impact crater structures that have not be found in the sediment, especially in the oceanic bottom. Even if the impact craer structures were destroyed by it active geologic processes causing surface renewal, the impact ejecta and dedris of NEOs had survived and marked the geohysical and geopchemical anomalies related to impact in the sediment, providing NEO impact events with new ground evideces. Though a limited number of stratigraphic evidences discovered, the discovery of the evidences for impacts in the strati-graphic record has developed an important research area of NEO impacts. This paper will present a brief review of studies head in this direction.
【CateGory Index】: P183.5
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Chinese Journal Full-text Database 10 Hits
1 MA\ Peixue (Department of Technical Physics, Peking University, Beijing,100871) HOU\ Quanlin (Institute of Geology, Academia Sinica, Beijing, 100029) CHAI\ Chifang (Institute of High Energy Physics, Academia Sinica, Beijing, 100080) XU Heling\ WU Xihao;Distribution of Iridium in Different Size Fractions at the N/Q Boundary in Loess:Implications for an Asteroid Impact 2.4 Ma Ago[J];ACTA SCICENTIARUM NATURALUM UNIVERSITIS PEKINESIS;1998-06
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【Secondary Citations】
Chinese Journal Full-text Database 2 Hits
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