浅覆盖区陆相盆地高频层序划分与岩石化学的对比——以大兴安岭北段上黑龙江盆地绣峰组为例

任凤和; 杨晓平; 周兴福; 李仰春

Volume 29 Issue 6

Jun. 2004

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Article Navigation > Earth Science > 2004 > 29(6): 711-715

REN Feng-he, YANG Xiao-ping, ZHOU Xing-fu, LI Yang-chun, 2004. Comparison of High-Frequency Sequence Division and Petrochemistry in the Continental Basin of Thin Cover Area: Example with Xiufeng Formation of Upper Heilongjiang Basin in North Daxing'anling. Earth Science, 29(6): 711-715.

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Comparison of High-Frequency Sequence Division and Petrochemistry in the Continental Basin of Thin Cover Area: Example with Xiufeng Formation of Upper Heilongjiang Basin in North Daxing'anling

1.
School ofthe Earth Sciences and Resources, China University ofGeosciences, Beijing 100083, China
2.
Heilongjiang Institute ofGeological Survey, Harbin 150036, China
3.
Qoqihar Branch, Research Institute ofRegional Geological Survey ofHeilongjiang, Qoqihar 161005, China

Received Date: 2004-08-28
Publish Date: 2004-11-25

Abstract

Abstract

Use different expressions of the various oxides and relevant ratio of lithochemistry in continental basin, this paper discusses the forming climate, water body, depositional system and base level characteristics of level Ⅳ sequence in Xiufeng Formation of upper Heilongjiang basin. Fe₂O₃, Fe³⁺/Fe²⁺, K₂O, Na₂O, etc. decreased gradually from bottom to middle in level Ⅳ sequence of Xiufeng Formation; MnO, FeO, MgO, LOS, etc. increased gradually; from middle to top, Fe₂O₃, K₂O, Na₂O, etc. increased gradually, MnO, FeO, etc. decreased. The symmetrical cycle characteristics show that the base level of the middle period is from a deep water body and a damp climate, changing to a shallow water body and dry climate in level Ⅳ sequence of Xiufeng Formation. This study provides a new thought for high frequency sequence division of continental basin.
- petrochemistry,
- high-frequency sequence,
- Xiufeng Formation,
- continental basin,
- shallow cover area

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References(17)

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