阿瓦提斷陷及鄰區(qū)寒武-奧陶系沉積相特征研究.pdf

1、成都理工大學碩士學位論文阿瓦提斷陷及鄰區(qū)寒武-奧陶系沉積相特征研究姓名：先偉申請學位級別：碩士專業(yè)：礦產(chǎn)普查與勘探指導教師：徐國強20090401成都理工大學碩士學位論文 II Study of Sedimentary Facies Characteristic of Cambrian- Ordovician in Awati Fault Depression and Its Surrounding Region

2、 Introduction of the author: Xianwei, male, was born in February, 1983 whose tutor was Professor Xuguoqiang. He graduated from Chengdu University of Technology in Mineral Resource Prospecting and

3、 Exploration major and was granted the Master Degree in June, 2009. Abstract Awati fault depression lies in west of north depression in Tarim Basin, is about 30 thousands km2. Its surrounding

4、aera includes Ke Ping uplift, Ba Chu uplift, Shun Tuo Guo Le uplift, Sha Xi uplift and Ku Che depression. The study aera has several features, including great depth, little structure, little

5、 exploration well for the bed of interest, and abundant hydrocarbon, so the study of sedimentary facies characteristics of the Cambrian- Ordovician is very important. On the base of outcrop explo

6、ration, making synthetic seismogram and horizon calibration, seismic interpretation for digital section and regional paper- section, the outcrop stratigraphic column, regional correlation section of

7、strata for bed of interest, strata isopach map, original basin section, seismic facies map, sedimentary facies map, oil and gas comprehensive evaluation map etc, were compiled, about 31. The sed

8、imentary facies characteristics and relationships between sedimentary facies characteristics and hydrocarbon in Awati fault depression and its surrounding aera were systematical studied. The results and c

9、ognitions are as follows: (1) During Early Cambrian, there is a platform sedimentary environment in study aera; During Middle Cambrian, the difference of sedimentary environment is great. The stu

10、dy area includes ocean trough, embayment in north and west of Awati fault depression (normal and brackish marine sedimentary environment, consisting of intraplatform basin and passageway of ocean

11、 current), restricted platform in south of research region, evaporate platform and lagoon. (2) During Late Cambrian- Middle Ordovician, sedimentary structure setup is relatively steady in the study