五百梯东–马槽坝地区飞仙关组沉积相分析
Sedimentary Facies Analysis of the Feixianguan Formation in the Wubai Tidong-Mafangba Area
DOI: 10.12677/AG.2019.94028, PDF,   
作者: 傅 聪, 胡忠贵, 左洺滔, 凌 睿:长江大学沉积盆地研究中心,湖北 武汉;李世临:中国石油西南油气田公司重庆气矿,重庆
关键词: 川东北地区飞仙关组沉积相Northeast Sichuan Area Feixianguan Formation Sedimentary Facies
摘要: 根据五百梯东–马槽坝地区内岩石学特征、沉积构造、取芯井段描述等综合分析,研究区飞仙关组为碳酸盐台地沉积模式,主要包括局限台地、开阔台地、蒸发台地、台缘滩相、斜坡相、陆棚–盆地相等七种相带。飞仙关期的古地理格局延续了晚二叠世古地理特征,且对其又有进一步的发展。长兴期末,长兴组礁顶有较为短暂的暴露,飞仙关组延续了长兴组沉积,且基本上是连续沉积的,飞仙关组的沉积具有明显的填平补齐特征。飞仙关组沉积早期基本继承了晚二叠世晚期沉积格局,发育一套斜坡–陆棚相沉积;晚期由于填平补齐作用,整个研究区均为一套浅水碳酸盐台地相沉积。
Abstract: According to the comprehensive analysis of petrological characteristics, sedimentary structure and description of coring wells, Feixianguan Formation in the study area is a carbonate platform sedimentary model, which mainly includes seven facies belts: limited platform, open platform, evaporation platform, platform margin beach facies, slope facies and shelf-basin facies. The pa-laeogeographic pattern of Feixianguan Period continued the palaeogeographic characteristics of the Late Permian and further developed it. At the end of the Changxing period, the reef top of the Changxing Formation was exposed for a short time. The Feixianguan Formation continued the Changxing Formation deposits, which were basically continuous deposits. The Feixianguan For-mation deposits had obvious filling-up characteristics. Feixianguan Formation inherited the late Permian sedimentary pattern in the early stage and developed a set of slope-shelf facies deposits. In the late stage, the whole study area is a set of shallow-water carbonate platform facies deposits due to filling-up.
文章引用:傅聪, 胡忠贵, 李世临, 左洺滔, 凌睿. 五百梯东–马槽坝地区飞仙关组沉积相分析[J]. 地球科学前沿, 2019, 9(4): 247-254. https://doi.org/10.12677/AG.2019.94028

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