| 准噶尔盆地石南地区中侏罗统头屯河组沉积特征及演化* |
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| 引用本文： | 邹妞妞,张大权,史基安,蒋欢,鲁新川,张顺存.准噶尔盆地石南地区中侏罗统头屯河组沉积特征及演化*[J].古地理学报,2016,18(6):951-960. |
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| 作者姓名： | 邹妞妞 张大权 史基安 蒋欢 鲁新川 张顺存 |
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| 作者单位： | 1.贵州大学资源与环境工程学院,贵州贵阳 550025;2.甘肃省油气资源研究重点实验室/中国科学院油气资源研究重点实验室,甘肃兰州 730000;3.中国科学院大学,北京 100049;4.贵州省地质环境监测院,贵州贵阳 550004;5.中国石油新疆油田公司实验检测研究院,新疆克拉玛依 834000 |
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| 基金项目： | [Co-funded by National Program on Key Basic Research Project(973 Program)(No.2011CB201104), National Science and Technology Major Project (No.2011ZX05000-01-06) and Key Laboratory Program of Gansu Province(No.1309RTSA041)] |
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| 摘 要： | 目前,对准噶尔盆地石南地区中侏罗统头屯河组沉积相的认识存在较大分歧和争议。通过岩心观察和精细描述、薄片鉴定和测井曲线分析等方法,对石南地区头屯河组岩石类型、沉积构造和沉积序列等特征进行详细研究,同时结合区域沉积构造背景,认为石南地区头屯河组沉积环境属辫状河三角洲。头屯河组一段沉积时期,研究区发育辫状河三角洲前缘沉积,辫状河三角洲前缘水下分流河道砂体呈条带状展布;头屯河组二段沉积时期以辫状河三角洲前缘沉积为主,由于湖平面的下降,辫状河三角洲进积,靠近物源方向发育辫状河三角洲平原,辫状河三角洲前缘河道砂体叠置连片分布;头屯河组三段沉积时期湖平面快速上升,全区基本演化为滨浅湖相沉积。
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| 关 键 词： | 头屯河组 石南地区 辫状河三角洲 沉积相 准噶尔盆地 |
| 收稿时间： | 19 May 2015 |
Sedimentary characteristics and evolution of the Middle Jurassic Toutunhe Formation in Shinan area of Junggar Basin |
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| Zou Niuniu,Zhang Daquan,Shi Ji'an,Jiang Huan,Lu Xinchuan,Zhang Shuncun.Sedimentary characteristics and evolution of the Middle Jurassic Toutunhe Formation in Shinan area of Junggar Basin[J].Journal of Palaeogeography,2016,18(6):951-960. |
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| Authors: | Zou Niuniu Zhang Daquan Shi Ji'an Jiang Huan Lu Xinchuan Zhang Shuncun |
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| Abstract: | There are different viewpoints about the sedimentary facies of the Middle Jurassic Toutunhe Formation in Shinan area of Junggar Basin by far. Based on detailed core observations,thin sections and logging analysis,through study on sedimentary characteristics of lithologic types,sedimentary structures and sedimentary sequence was carried out. Combining with regional sedimentary background and tectonic setting,we considered that the sedimentary environment of the Toutunhe Formation in Shinan area is braided delta. Braided delta front sediments were deposited during the depositional period of Member 1 of Toutunhe Formation,the ribboned sandbody of subaqueous distributary channel widely developed. During the depositional period of Member 2 of Toutunhe Formation,braided delta system progradated,braided delta plain appeared at areas close to provenance and sandbodies of braided delta plain were overlapping and widely distributed. During the depositional period of Member 3 of Toutunhe Formation, the lake level rised rapidly,and shallow lake facies were mainly developed in the study area. |
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| Keywords: | Toutunhe Formation Shinan area braided delta sedimentary facies Junggar Basin |
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