| 川中-川南过渡带雷口坡组沉积相特征 |
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| 引用本文： | 吴小庆,赵路子,黄亮,丁熊,唐青松. 川中-川南过渡带雷口坡组沉积相特征[J]. 四川地质学报, 2010, 30(3): 260-264 |
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| 作者姓名： | 吴小庆 赵路子 黄亮 丁熊 唐青松 |
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| 作者单位： | 西南石油大学资源与环境学院,成都,610500;西南油气田公司勘探处,成都,610051;西南油气田公司蜀南气矿勘探开发研究所,四川,泸洲,646001;西南油气田公司川中油气矿,四川,遂宁,629000 |
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| 基金项目： | 四川省矿产普查与勘探重点学科建设项目 |
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| 摘 要： | 根据四川盆地中三叠统雷口坡组的区域背景资料,对川中—川南过渡带雷口坡组的沉积特征进行研究,认为雷口坡组属于陆表海型局限～蒸发海台地相沉积,可进一步划分为粒屑滩、半局限泻湖、局限泻湖、蒸发泻湖等4种亚相及10余种微相,其中,雷一^1亚段的颗粒滩亚相是本区雷口坡组主要的有利储集相带。通过对重点层段雷口坡组雷一^1亚段的沉积微相平面展布特征分析,建立了该亚段颗粒云岩沉积期的陆表海碳酸盐岩台地相的沉积演化模式,并认识到本区雷口坡组沉积相受古气候、相对海平面变化、构造活动以及继承性古隆起的影响,在纵向上具有继承性,平面上分布稳定。
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| 关 键 词： | 沉积相 陆表海台地 雷口坡组 川中-川南过渡带 |
Sedimentary Facies of the Triassic Leikoupo Formation in the Central-South Sichuan Intermediate Zone |
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| WU Xiaoqing,ZHAO Luzi,HUANG Liang,DING Xiong,TANG Qingsong. Sedimentary Facies of the Triassic Leikoupo Formation in the Central-South Sichuan Intermediate Zone[J]. Acta Geologica Sichuan, 2010, 30(3): 260-264 |
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| Authors: | WU Xiaoqing ZHAO Luzi HUANG Liang DING Xiong TANG Qingsong |
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| Affiliation: | 1-College of Environment and Resources,Southwest Petroleum University,Chengdu 610500;2-Exploration Department,Southwest Oil-Gas Field Company,Chengdu 610051;3-Shunan Institute of Exploration and Department,Southwest Oil-Gas Field Company,Luzhou,Sichuan 646001;4-Central Oil-Gas Mine,Southwest Oil-Gas Field Company,Suining,Sichuan 629000) |
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| Abstract: | The study indicates that the Middle Triassic Leikoupo Formation in the central-south Sichuan intermediate zone belongs to restricted platform and evaporate platform facies which may be divided into 4 subfacies such as grain dust beach,semirestricted lagoon,restricted lagoon and evaporate lagoon and more than 10 microfacies.Study of the first submember of the first Member of the Leikoupo Formation indicates that paleoclimate,eustacy,tectonism and old uplift had an effect on sedimentation of the Leikoupo Formation. |
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| Keywords: | sedimentary facies epicontinental sea platform Leikoupo Formation central-south Sichuan intermediate zone |
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