DEPOSITIONAL MICROFACTES, RHYTHMS, CYCLES AND SEQUENCE STRATIGRAPHY OF QIXIA FORMATION IN ZHEJIANG PROVINCE, CHINA
-
摘要: 本文以沉积微相及生物生态分析为基础,对研究区3条剖面栖霞组的沉积韵律、沉积旋回、沉积环境进行了研究,并在此基础上分析了层序界面、沉积层序及各沉积体系域的沉积特征。认为研究区栖霞组总体形成于潮下低能开阔无障壁的碳酸盐级坡沉积背景,其中可识别出两类界面,4个沉积层序,根据界面特征及准层序叠加型式划分出海度体系域(TST)和高水位体系域(HST)。Abstract: Based on the sedimentary microfacies and bioecologic analysis for the Qixia Formation of three sections in studied area, this paper summaried the depositional rhythms, cycles and sedimentary environment of Qixia Formation, and further analysed the characteristics of sequence boundary and depositional system tract. The results suggest that Qixia Formation in the study area was on the whole formed in a depositional setting of carbonate gradual slope that was subtidal, low-energied, open and non-barrier; and moreover two kinds of sequence boundaries and four sequences are recognized in Qixia Formation. According to the characteristics of sequence boundary and the stacking type of parasequences, it is divided into a transgressive system tract (TST) and a highstand system tract (HST).
-
[1] Haq B U et al. Mesozoic trod Cenozoic Chronostratigraphy and Cycles of Sea-level Change. In:Wilgus C K et al eds.. Sea-level Changes: an Integrated Approach. Society of Economic Paleontolo-gists and mineralogists Special Publication 1988, 42:71-108 [2] Galloway W E.Genitic Stratigraphic Sequence in Basin Analysis I:and Genesis of Flooding-Surface Bounded Depositional Unites. AAPG.1989,73(2):125-143 [3] Vail P R et al. Seismic Stratigraphy and Cloble Change of Sea-level. In:Payton C E. ed. Seismic Stratigraphy-Application to Hydrocarbon Exploration. AAPG Memoir 1977.26:51-97 [4] Van Wagoner J C et al. An Overview of the Fundamentals of Sequence Stratigraphy and Key Definitions. In; Wilgus C K et al eds. Sea-level Changes: an Integrated Approach. Society of Economic Paleontologists and mineralogists Special Publication 1988,42:125-154 [5] Tucker M E, Wilson J I. Crevello P D, Sarg J R. Read J F. Car-bonate Platform Facies. Sequence and Evolution. Special Publication No. 9 of the International Association of Sedimentologists.1990.Blackwell Scientific Publication. [6] 薛良清.层序地层学研究现状、方法与前景.石油勘探与开发,1995,22(5):8-13 [7] 沙庆安,吴望始,傅家谟主编,黔硅地区二叠系综合研究-兼论含油气性.北京:科学出版社,1990 [8] 陈中强.高分辨率层序地层学的研究基础-准层序的识别.地层学杂志.1995,19(1):36-46 [9] 刘本培,李儒峰,尤德宏.黔南独山石炭系层序地层及麦蜷带冰川型全球海平面变化.地球科学-中国地质大学学报,1994,19(5):553-564 -
计量
- 文章访问数: 697
- HTML全文浏览量: 70
- PDF下载量: 346
- 被引次数: 0
下载:
苏公网安备32021102000780号