| 滨里海盆地东缘石炭系KT-II层碳酸盐岩微相特征与沉积环境研究--以扎纳若尔地区为例 |
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| 引用本文： | 伊硕,黄文辉,金振奎,高白水.滨里海盆地东缘石炭系KT-II层碳酸盐岩微相特征与沉积环境研究--以扎纳若尔地区为例[J].沉积学报,2017,35(1):139-150. |
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| 作者姓名： | 伊硕 黄文辉 金振奎 高白水 |
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| 作者单位： | 1.中国地质大学(北京)能源学院, 北京 100083; |
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| 基金项目： | 国家科技重大专项(2011ZX05042-001 |
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| 摘 要： | 为解决滨里海盆地东缘扎纳若尔地区石炭系KT-II层碳酸盐岩储层非均质性问题，对其沉积微相内部沉积模式进行更详细的剖析和精细刻画。研究结果表明:①研究区石炭系KT-II层碳酸盐岩的岩性以亮晶颗粒石灰岩为主，灰泥颗粒石灰岩及灰泥石灰岩次之。②根据沉积特征及沉积环境差异，碳酸盐岩沉积可划分为潮坪、浅滩和滩间洼地。以水深、水动力条件及盐度特征为基础，将碳酸盐岩浅滩划分为破浪滩和升浪滩两种微相，并根据其组成不同进一步细分为类滩、有孔虫滩、藻粒滩和鲕粒滩亚微相。③按照Wilson理想化碳酸盐岩综合相模式，研究区归属于开阔台地相内部沉积，并与Irwin陆表海能量模型进行对应分析:潮坪相对应于靠近海岸的Z带；滩相沉积对应于稍近海岸的Y带，洼地对应于远离海岸的X带。
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| 关 键 词： | 滨里海盆地 扎纳若尔 石炭系 KT-II层 沉积微相 |
| 收稿时间： | 2016-02-14 |
Characteristics of Carbonate Microfacies and Sedimentary Environment of the East Margin of Caspian Basin in the Carboniferous KT-Ⅱ Layer: A case from Zanazor area |
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| YI Shuo,HUANG WenHui,JIN ZhenKui,GAO BaiShui.Characteristics of Carbonate Microfacies and Sedimentary Environment of the East Margin of Caspian Basin in the Carboniferous KT-Ⅱ Layer: A case from Zanazor area[J].Acta Sedimentologica Sinica,2017,35(1):139-150. |
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| Authors: | YI Shuo HUANG WenHui JIN ZhenKui GAO BaiShui |
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| Institution: | 1.School of Energy Resources, China University of Geosciences, Beijing 100083, China;2.Key Laborary of Marine Reservoir Evolution and Hydrocarbon Accumulation Mechanism, Ministry of Education, China University of Geosciences, Beijing 100083, China;3.College of Earth Sciences, China University of Petroleum, Beijing 102249, China |
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| Abstract: | In order to solve the problem of reservoir heterogeneity in Carboniferous KT-II carbonates in Zanazor on the eastern margin of the Pre-Caspian basin, the internal sedimentary models of sedimentary microfacies are characterized more detailedly and meticulously. The results show that:①The carbonate rocks of the Carboniferous KT-II in the study area are dominated by sparry grainstones, followed by packstones and mudstones. ②According to the different sedimentary characteristics and depositional environment, carbonate sediments can be divided into tidal flat, shoal and depression. Based on the characteristics of water depth, hydrodynamic condition and salinity, the carbonate shoal is divided into two kinds of microfacies:the break-wave shoal and up-wave shoal. According to their composition, the carbonate shoal is subdivided into four types:fusulinids shoal, foraminifera shoal, algal shoal and oolitic shoal. ③According to Wilson's idealized carbonate model, the study area belongs to the interior sedimentary area of the open platform, and corresponds to the Irwin's epicontinental sea energy model. The tidal flat corresponds to the Z-zone close to the coast; the shoal corresponds to the the Y-zone near the coast; and depression corresponds to the X-zone far from the coast. |
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| Keywords: | Caspian basin Zanazor Carboniferous KT-Ⅱ layer microfacies |
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