The Sedimentary System and Evolution of the Early Tertiary in the Sunda Basin, Indonesia

来源 :石油科学(英文版) | 被引量 : 0次 | 上传用户:buugly
下载到本地 , 更方便阅读
声明 : 本文档内容版权归属内容提供方 , 如果您对本文有版权争议 , 可与客服联系进行内容授权或下架
论文部分内容阅读
The Sunda basin is located at the north of the Sunda Strait situated between Sumatra and Java islands, Indonesia. It is an early Tertiary typical half-graben basin, in which developed a series of terrigenous clastic sedimentation. Previous work suggested that the early Tertiary sediments were alluvial, fluvial, lacustrine and swamp deposits, of which the Banuwati formation was alluvial and lacustrine deposits, the Zelda member fluvial deposits, and Gita member fluvial and swamp deposits. In this paper, based on the integrated research on core lithology (including lithology succession and structure), well log shape, and seismic reflection characteristics, a more detailed sedimentation system was set up as follows: 1) In addition to the alluvial, lacustrine, fluvial and the swamp deposits presented in previous work, subaqeous fan, shore-shallow lacustrine, deep lacustrine and turbidite fan, fan delta and delta deposits also developed in this basin. 2) Alluvial fan, subaqeous fan and fan delta deposits occurred on the steep slope adjacent to the synrift boundary fault; while the deltaic depositional system usually distributed on the gentle slope of the basins. 3) The Zelda member that was interpreted as a fluvial deposit in previous work is now interpreted as a subaqueous fan, fan delta, delta and lacustrine deposit system. 4) From the point of view of sedimentology, the evolution of basin could be divided into four stages: the initial subsidence (matching the Banuwati formation), the rapid subsidence (matching the low Zelda member of Talang Akar formation), the steady subsidence or fluctuation (matching the middle Zelda member of Talang Akar formation), and the uplifting (matching the upper Zelda member and the Gita member of Talang Akar formation). At the initial subsidence stage, the alluvial fan, flood plain, braided stream deposits developed, and then subaqeous fan sedimentation; at the rapid subsidence stage, shore-shallow lacustrine and deep lacustrine deposits and turbidite fans occurred; at the steady subsidence stage, thick fan deltas and delta sandstones developed; and at the uplifting stage, came fluvial (including meandering river and the anastomosed stream) and swamp sediments. Sediment supply was mainly from the northwest, secondly from the east. From the beginning to the end of the terrigenous basin evolution, the area of sedimentation was gradually enlarged. The palaeo-topography became increasingly flat.
其他文献
通过对后掠楔而及双斜切双压缩进气道出口流场数值模拟及与理论计算值对比的研究,阐述了双斜切双压缩进气道的进口流场特性,指出了设计上应遵循的准则.计算表明:后掠楔面产生
锌指核酸酶已作为一种基因组编辑工具成功应用于多种有机体及细胞类型.它包括一个非特异的Fok I核酸内切酶DNA切割结构域和一个特异性的DNA结合结构域.可以在基因组定点产生
本文运用文献资料法、网上查询法分析了本国货币升值的原因,以及人民币升值对体育用品企业产生的正负面影响,并就如何应对本国币值提高促进体育用品企业的发展提出了一些建议
为了解牛源犬新孢子虫NcSRS2-NcGRA7融合基因的生物学特性,本试验提取牛源犬新孢子虫基因组DNA,应用PCR技术扩增犬新孢子虫表面蛋白基因NcSRS2和致密颗粒蛋白基因NcGRA7,SOE-
审判公信力问题是近年备受关注的热点问题,主要是指对法院的信任.审判公信力缺失主要的原因一般认为是司法不独立、裁判不公等多种原因形成的.通过历史分析和比较研究可知,具
雌激素受体(estrogen receptor,ESR)基因对动物的生殖功能发挥着重要的作用.根据GenBank发表ESR基因外显子1的序列设计引物,采用PCR-SSCP技术分析ESR基因外显子1在河西绒山羊
学分制“以人为本”的教育理念及其教学管理体系在成人高等教育领域的推广与应用产生了较好的耦合效应,并呈现出一定的特殊性。这种特殊性主要体现在成人高等教育课程、选课
研制出基于Windows CE的HPC开发平台,并在该平台的基础上开发出一系列面向农户的HPC农业专家系统.本文介绍了HPC农业专家系统知识库的构建策略,即科学性与实用性的统一,兼顾
多年来,内部控制问题一直是国内外研究的热点,随着我国市场经济体制的日益完善,要求企业必须构建完善有效的内部控制框架与之适应,相关学者从控制环境、风险评估、控制活动、
文章从安全、增加产量、降低成本、提升煤质、销售提价、减少人员、减少排放等7个方面阐述煤矿企业提高经济效益的途径。 This article elaborates the ways for coal mines