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- Title
Sandstone bodies distribution in sequence stratigraphic framework of Jurassic Sangonghe formation in Moxizhuang area, Junggar basin.
- Authors
ZHIWEN LI; JIANHUA GUO; ZHEN ZHANG
- Abstract
Based on Vail's classical sequence stratigraphy theory, the sequence stratigraphy framework of Jurassic Sangonghe formation in Moxizhuang area is studied by using outcrop, logging and logging data. The first flooding surface (FFS) and the maximum flooding surface (MFS) at both sequence boundary and sequence interior are identified. The Sangonghe formation is divided into 2 third-order sequences to identify the low stand systems tract (LST), transgressive system tract (TST) and high stand systems tract (HST). Due to the mutual cutting and superimposition of multi-stage channel sand bodies, the connectivity of subaqueous distributary channel sand bodies in SQ2 sequence of Sangonghe Formation is good, especially in the sedimentary period of fan delta front in the LST of SQ2 sequence. JSQ1 sequence is mainly the development of meandering river point bar sand bodies; The sand bodies in the LST of JSQ2 sequence are mainly developed in the subaqueous distributary channel of the fan delta front. The HST of JSQ2 sequence is mainly the development of sand bodies in shallow lakes and bars. According to the development and evolution of sand bodies in the two sequences of the Sangonghe formation, places atwells Z101 - Z105, Z3 - Z5 and Z102 - Z103 are areas where sand bodies are developed intensively.
- Subjects
JUNGGAR Basin (China); SANDSTONE; SEQUENCE stratigraphy; OUTCROPS (Geology); LOGGING
- Publication
Journal of Mines, Metals & Fuels, 2019, Vol 67, Issue 4, p221
- ISSN
0022-2755
- Publication type
Article