| 摘要: |
| 渤海海域沙一、二时期湖相碳酸盐岩分布广泛。根据其沉积特征可划分为台地型、斜坡型、水下隆起型和混合沉积型4大类及相应的亚相、微相,其中位于湖平面之下浪基面之上的各类浅水湖泊碎屑滩(生物滩、陆屑滩)储层最为发育。该时期渤海海域为温暖潮湿的北亚热带气候、封闭的微咸水-半咸水的环境。古地貌特征为影响碳酸盐岩发育和富集分布规律的主控因素,周边陆源碎屑供给能力则影响碳酸盐岩的发育程度。 |
| 关键词: 湖相碳酸盐岩 沉积特征 主控因素 渤海海域 沙一、二时期 |
| DOI： |
| 附件 |
| 投稿时间：2011-12-19修订日期：2012-01-21 |
| 基金项目:国家重大专项“大型油气田及煤层气开发”子课题“近海隐蔽油气藏勘探技术”，项目编号:(2011ZX05023-002) |
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| Sedimentary characteristics and controls of the carbonate rocks during the deposition of the first and second members of the Shahejie Formation in the Bohai sea area |
| SONG Zhang-qiang, CHEN Yan-fang, LIU Zhi-gang, WANG Xue-lian |
| (Tianjin Branch, CNOOC, Tianjin 300452, China) |
| Abstract: |
| The lacustrine carbonate rocks occurred on a wide range of scales in the Bohai sea area during the deposition of the first and second members of the Shahejie Formation, and may be grouped into four sedimentary facies types, including the carbonate platform, carbonate ramp, subaqueous uplift and mixed siliciclastic-carbonate facies types. The shallow lacustrine organic bank and terrigenous clastic beach reservoirs are best developed in the horizons between the lake level and wave base. During the deposition of the first and second members of the Shahejie Formation, the Bohai sea area was then in the warm humid subtropical climates and enclosed saline and brackish environments. The palaeogeomorphological features and terrigenous supply capacity are believed to be the main controlling factors for the development and distribution of the carbonate rocks in the Bohai sea area. |
| Key words: lacustrine carbonate rock sedimentary characteristics controlling factor Bohai sea area deposition of the first and second members of the Shahejie Formation |
