cm 0cm 0pt; mso-margin-top-alt: auto; mso-margin-bottom-alt: auto; mso-pagination: widow-orphan; mso-outline-level: 2" class=MsoNormal>ck; FONT-SIZE: 12pt; mso-font-kerning: 18.0pt; mso-bidi-font-family: 宋体" lang=EN-US>Possible Impact at Precambrian-Cambrian Boundary and Its Influence on Biospherece prefix = o ns = "urn:schemas-microsoft-com:office:office" />
- 责任者：Zhang Weijia (Department of Physics ; Peking University ; Beijing 100871 ; China) ; Daniel P. Connelly
- 刊名：Geological Survey and Research
- 出版年：2010
- 卷期：33(3)
- 关键词：寒武纪 ; Cambrian
- 页码：p.167-179
- 图表：3 tables, 61 refs.
- 分类号：1200
- issnNo：ISSN1672-4135
- isbnNo：CN12-1353/P
cm 0cm 0pt" class=MsoNormal>After a thorough research on the Earth’s circumstantial changes and the great evolution of life in the Cambrian period, the authors propound such a hypothesis: During the Late Precambrian, about 500 ~ 600 Ma, a celestial body impacted the Earth. The high temperature ended the great glaciation, facilitated the communication of biological information. The rapid change of Earth environment enkindled the genesis-control system, and released the HSP-90 variations. This paper uses a large amount of analyses and calculations, and illustrates that this hypothesis fits well with most of the important incidences in astronomic and geologic discoveries.ce prefix = o ns = "urn:schemas-microsoft-com:office:office" />