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- Title
鄂尔多斯盆地西缘奥陶纪克里摩里期—乌拉力克期 构造—岩相古地理特征.
- Authors
于洲; 周进高; 李程善; 宋晓娇; 罗超; 吴兴宁; 吴东旭; 胡琮
- Abstract
In order to find out the tectonic-sedimentary characteristics of the Ordovician Kelimoli-Wulalike formations in the Ordos Basin,and provide technical support for the prediction and target optimization of favorable exploration zones in this area,the paleotectonic pattern and sedimentary characteristics of the Ordovician Kelimoli-Wulalike stages in the western edge of the Ordos Basin are studied systematically under the guiding ideology of tectonic controlling deposition,based on seismic,well logging,drilling cores,microscopic thin section and outcrops. The results indicate that:(1)The paleotectonic pattern of the Kelimoli-Wulalike stages reflects the characteristics of“one land,one uplift and one depression,and high and sag alternate with each other along the northeast direction of transition zone”;(2)The deposition pattern of the Kelimoli-Wulalike stages is rimmed shelf and the types of sedimentary facies include platform edge,slope,deep-water shelf and basin;(3)The paleotectonic pattern controls the plane distribution of sedimentary facies. The platform margins are distributed along the central paleo-uplift and the NE-trending bulge on the uplift transition zone,the slope facies are mainly distributed along the NE-trending sag on the uplift transition zone;the deep-water shelf facies and basin facies are mainly distributed along the western depression.
- Subjects
FACIES; IDEOLOGY; FORECASTING; SEDIMENTARY facies (Geology)
- Publication
Natural Gas Geoscience, 2021, Vol 32, Issue 6, p816
- ISSN
1672-1926
- Publication type
Article
- DOI
10.11764/j.issn.1672-1926.2021.01.001