Progress on the K/T Boundary : the Relation between Chemical Elements Abnormity and Dinosaurs Extinction

doi:10.7523/j.issn.2095-6134.2005.6.002

Abstract

Abstract:

This paper reviews the progress of work on the K/T boundary and dinosaurs extinction hypotheses,and concludes that,on the one hand,many achievements were acquired,but on the other hand,most of work in the past focused on evidence of the catastrophic environment.Only very few scientists who noted that Co 、Cr 、Ni 、Mn、V etc,contents of which display obvious changes,also are bio-necessary trace elements,and others,such as REE、Pb、Sr etc,may be very important for normal physiological functions of biology have realized that there may be affinity between the change of contents of some elements across the K/T boundary and dinosaurs extinction,so more systemic research should be done.In the future,we should strengthen such studies as the effects of elements on biology and so on.

Key words: K/T boundary, dinosaurs extinction, geochemical abnormities, stable isotopes, clay minerals

CLC Number:

X142

TIAN Xiao-Xue, LUO Kun-Li, TAN Jian-An, LI Ri-Bang. Progress on the K/T Boundary : the Relation between Chemical Elements Abnormity and Dinosaurs Extinction[J]. , 2005, 22(6): 667-675.

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