Evolutional Characteristics and Their Paleoclimate Significance of Trace Elements in the Hetaoyuan Formation, Biyang Depression
- Received Date: 1995-10-27
- Publish Date: 1997-03-10
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Key words:
- trace element /
- abundance /
- paleoclimate /
- Biyang depression
Abstract: he Hetaoyuan Formation in the Tertiary Biyang depression is completely a lacustrine regressives ys tem，but it has some microcyclic variations in microfacies during evolution. These characteristics canbe shown obviously from the abundance of trace elements and their ratios. Based on variation charactersof contents of 16 trace elements such as Ti，Sr, Nb, Ba, etc.and 7 trace elements ratios such as Sr/Ba,Fe /M n, M g / Ca,etc·obtained from mudstones, shales and carbonates, and in terms of some data suchas paleosalinity and lithofacies, this paper made a systematical study of paleodimate under which theHetaoyuan Formation was deposited. As a result, four characteristic paleoclimate types can be grouped,i. e.，temperate-humid, dry一umid alternation, hot-dry and humid-emiarid. It is hoped that this result can provide some clues for the petroleum and gas exploration in the Biyang depression.
| Citation: | Wang Suiji, Huang Xingzhen, Tuo Jincai, Shao Hongshun, Yan Cunfeng, Wang Shouqing, He Zurong. Evolutional Characteristics and Their Paleoclimate Significance of Trace Elements in the Hetaoyuan Formation, Biyang Depression[J]. Acta Sedimentologica Sinica, 1997, 15(1): 65-70.
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