1999•Journal of Chengdu University of TechnologyRequires access

SEQUENCE STRATIGRAPHY CHARACTERISTICS DURING THE FAULTING PERIOD IN THE NORTH OF SONGLIAO BASIN

Tao Pu

Abstract

Based on the seismic and drilling data, the Shahezi Formation in the Xujiaweizi faulted area of Songliao Basin has been divided as three tectonic sequences(grade 3). There are alluvial systems tract, transgressive systems tract, regressive systems tract, and fluvial systems tract in every tectonic sequence. Alluvial systems tract is composed of alluvial fan or braided fan and braided stream, transgressive systems tract and regressive systems tract are respectively composed of degrading and prograding fan delta or braided delta and lacustrine deposit, and fluvial systems tract is composed of fluvial stream and flood plain.

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Key concepts: Geology, Transgressive, Fluvial, Sequence stratigraphy, Alluvial fan, Alluvium, Structural basin, Paleontology