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| 塔里木盆地沙雅隆起托甫2井志留系划分对比 | |
| 引用本文： | 蔡习尧,窦丽玮,王怿,唐鹏,张智礼,魏玲,成俊峰.塔里木盆地沙雅隆起托甫2井志留系划分对比[J].岩石学报,2012,28(8):2584-2590. |
| 作者姓名： | 蔡习尧 窦丽玮 王怿 唐鹏 张智礼 魏玲 成俊峰 |
| 作者单位： | 1. 中国石油化工股份有限公司石油勘探开发研究院,北京,100083 2. 中国石油化工股份有限公司石油勘探开发研究院,北京100083;中国石油大学地球科学学院,北京102249 3. 中国科学院南京地质古生物研究所,南京,210008 4. 中国石化西北油田分公司勘探开发研究院,乌鲁木齐,830011 |
| 基金项目： | 本文受国家油气专项(2008ZX05002-003)和中国石化前瞻性研究项目(YPH08092)联合资助 |
| 摘 要： | 托甫2井志留系发育不全,仅残存下统(兰多维列统)柯坪塔格组与塔塔埃尔塔格组,柯坪塔格组分为三段:上下为砂岩段,中间为泥岩段,颜色以灰色、灰绿色为基调.塔塔埃尔塔格组为褐色、棕红色细砂岩与泥岩.在柯坪塔格组中下段获丰富的笔石、几丁石与疑源类化石,详细地讨论了这些属种的时代分布与地理分布,根据生物群特征,可将其归入3个化石组合(带),即Parakidograptus acuminatus,Belonechitinacf.postrobusta-Spinachitina sp.nov.与Dactylofusa cabottii-Cymatiosphaera densisepta-Leiosphaeridia组合,首次为主要勘探目的层之一的柯坪塔格组划分与对比提供了多门类的化石依据.托甫2井志留系可划分为1个Ⅱ级层序,4个Ⅲ级层序;Ⅱ级层序的顶、底界分别为区域不整合面T06与T07,具有明显的下削、上超特征.并以岩石地层为基础,生物地层为依据,结合测井地层与层序地层,厘定了托普2井志留系地层层序及组段的岩电特征,同时建立了覆盖区井下柯坪塔格组下段与上奥陶统桑塔木组的划分标准. |
| 关 键 词： | 化石 划分对比 托甫2井 志留系 塔里木盆地 |
| 收稿时间： | 1/9/2012 12:00:00 AM |
| 修稿时间： | 2012/4/15 0:00:00 |
Classification and correlation of Silurian of Well TP2 in Shaya Rise, Tarim Basin |
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| CAI XiYao,DOU Liwei,WANG Yi,TANG Peng,ZHANG ZhiLi,WEI Ling and CHENG JunFeng.Classification and correlation of Silurian of Well TP2 in Shaya Rise, Tarim Basin[J].Acta Petrologica Sinica,2012,28(8):2584-2590. | |
| Authors: | CAI XiYao DOU Liwei WANG Yi TANG Peng ZHANG ZhiLi WEI Ling and CHENG JunFeng |
| Institution: | Research Institute of Exploration & Production, SINOPEC, Beijing 100083, China;Research Institute of Exploration & Production, SINOPEC, Beijing 100083, China;College of Geosciences, China University of Petroleum, Beijing 102249, China;Nanjing Institute of Geology and Palaeontology, the Chinese Academy of Sciences, Nanjing 210008, China;Nanjing Institute of Geology and Palaeontology, the Chinese Academy of Sciences, Nanjing 210008, China;Research Institute of Exploration & Production, SINOPEC, Beijing 100083, China;Research Institute of Exploration & Production, NWC, SINOPEC, Urumqi 830011, China;Research Institute of Exploration & Production, NWC, SINOPEC, Urumqi 830011, China |
| Abstract: | The Silurian in the Well TP2 of Shaya Rise in the Tarim Basin did not develop fully, only with the Kalpintag Formation and Tataaiertag Formation in the Llandovery. Kalpintag Fm. was divided into three members, the upper and lower was named as the sandstone members, the middle as the mudstone one, with the grey and grey-green. Tataaiertag Fm. consists of brown and brown-red fine sandstone intercalated mudstone. A plentiful of fossils of graptolites, chitinozoans and aritarches were yielded in the middle and lower members of Kalpintag Fm., and space-time distribution of the fossils were detailedly discussed. According to the characteristics of the biota, they were lied into three fossil assemblages (zones), Parakidograptus acuminatus, Belonechitina cf. postrobusta-Spinachitina sp. nov. and Dactylofusa cabottii-Cymatiosphaera densisepta-Leiosphaeridia. The many kinds of the fossil basises are firstly provided for the division and correlation of the Kalpintag Fm., with the one of the main exploring aims. Silurian in Well TP2 was divided into one Second-order sequence, four Third-orders. The top and bottom margins of the Second-order are unconformity T60 and T70, with fair characteristics of truncate and onlap in the seismic sections. Based on the researches of biostratigraphy, lithostratigraphy, logging stratigraphy and sequence stratigraphy in Well TP2, new stipulation of stratigraphic succession and formations and members of Silurian was made. It had been achieved that the classific standard of the lower member of Kalpintag Fm. and Sangtamu Fm. of Upper Ordovician in the areal coverage of Tarim Basin. |
| Keywords: | Fossils Stratigrafic classification and correlation Well TP2 Silurian Tarim Basin |
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