|Table of Contents|

Analysis of Sequence Stratigraphy and Sedimentary Facies of Changxing Formation in Yuanba Area of Northeast Sichuan(PDF)

《地球科学与环境学报》[ISSN:1672-6561/CN:61-1423/P]

Issue:
2012年第04期
Page:
36-42
Research Field:
基础地质与矿产地质
Publishing date:

Info

Title:
Analysis of Sequence Stratigraphy and Sedimentary Facies of Changxing Formation in Yuanba Area of Northeast Sichuan
Author(s):
TIAN Cheng-wei1;  AN Xian-yin2; 3;  LUO Qing-yuan4;  XU Shao-hua4
1. Regional Geological Survey Party, Sichuan Bureau of Geological and Exploration of Mineral Resources, Shuangliu 610213, Sichuan, China; 2. School of Geosciences, China University of Geosciences, Wuhan430074, Hubei, China; 3. Chengdu Institute of Geology and Mineral Resources, Chengdu 610082, Sichuan,China; 4. School of Energy Resources, Chengdu University of Technology, Chengdu 610059, Sichuan, China
Keywords:
sequence stratigraphy;  sedimentary facies;  palaeogeomorphology;  seismic facies;  reef;  Changxing Formation;  Yuanba Area;  Sichuan
PACS:
P618.13; TE121.3
DOI:
-
Abstract:
Based on the theory of Vail classical sequence stratigraphy, according to the outcrop, drilling, logging and seismic data, sequence stratigraphy of single well in Changxing Formation of Yuanba Area was divided; characteristic of sequence stratigraphy of single well was analyzed, and sequence stratigraphy of typical profiles in connected wells was laterally compared by the means of three-dimensional seismic, and sequence stratigraphic framework was established; sedimentary facies layouts were obtained by the overlay between palaeolandform map and seismic facies, and the characteristic and evolution rule of the layouts in different system tracts were discussed. The results showed that Changxing Formation in Yuanba Area could be divided into two third-order sequences which were composed by transgressive system tract(TST)and highstand system tract(HST); the sequence boundary was type Ⅱ, and sequence gradually thin toward the basin; the thickness of TST was thinner than that of HST, HST of SQ2 sequence developed in Well YuanbaX better than that in Well Yuanba22; reef and shoal mainly developed in HST of third-order sequence, and grew little in TST.

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Last Update: 2012-12-20