CAJ | 학술논문

在系统收集研究区资料和前人研究的基础之上,对扬子地区晚二叠世吴家坪期的沉积环境及烃源岩发育的控制因素进行了探讨.扬子地区吴家坪期沉积环境包括陆地、海陆过渡环境、滨岸、碳酸盐岩台地和盆地,其中碳酸盐岩台地包括碳酸盐岩潮坪、局限台地、开阔台地、台地边缘、深水陆棚和台盆.对扬子地区晚二叠世吴家坪期的沉积古地理进行了总结,绘制了沉积古地理图,主要的古地理单元包括古陆、冲积平原、滨岸平原、碳酸盐岩台地和次深海.研究区内烃源岩类型多样,包括煤系、碳质页岩、泥岩、泥灰岩和硅岩等,主要发育在沼泽、溺湖、深水陆棚和台盆等环境.有机质的来源包括陆源、底栖藻类和浮游藻类.扬子地区晚二叠世吴家坪期烃源岩的发育主要受当时气候条件、洋流格局和沉积环境的控制.热带潮湿气候和洋流格局有利于有机质的生产,而局限的沉积环境有利于有机质的保存.
재계통수집연구구자료화전인연구적기출지상,대양자지구만이첩세오가평기적침적배경급경원암발육적공제인소진행료탐토.양자지구오가평기침적배경포괄륙지、해륙과도배경、빈안、탄산염암태지화분지,기중탄산염암태지포괄탄산염암조평、국한태지、개활태지、태지변연、심수륙붕화태분.대양자지구만이첩세오가평기적침적고지리진행료총결,회제료침적고지리도,주요적고지리단원포괄고륙、충적평원、빈안평원、탄산염암태지화차심해.연구구내경원암류형다양,포괄매계、탄질혈암、니암、니회암화규암등,주요발육재소택、닉호、심수륙붕화태분등배경.유궤질적래원포괄륙원、저서조류화부유조류.양자지구만이첩세오가평기경원암적발육주요수당시기후조건、양류격국화침적배경적공제.열대조습기후화양류격국유리우유궤질적생산,이국한적침적배경유리우유궤질적보존.
Based on available data about the study area and preresearch results, sedimentary environments and controlling factors of the hydrocarbon source rocks of the Late Permian Wujiaping Age in Yangtze area are discussed. Sedimentary environments include continental environment, transitional environment, littoral environment, carbonate platform and basin environment. Carbonate platform is composed of carbonate tidal flat.restricted platform,open platform,platform margin,deep shelf and intra-platform basin, The authors summarized the sedimentary palaeogeography of the Late Permian Wujiaping Age in the study area and compiled palaeogeographic maps. The main palaeogeographic units include ancient land,alluvial plain, littoral plain, carbonate platform and bathyal. Hydrocarbon source rocks in the study area are diverse, including coal measures, calcareous shale, mudstone, micritic limestone and siliceous rocks which are mainly developed in marsh, lagoon, deep water shelf and platform basin environments. Organic matter was derived from terrestrial, benthic algae and planktonic algae. The development of hydrocarbon source rocks was mainly controlled by the climatic conditions, ocean current patterns and sedimentary environments at that time. Tropical humid palaeoclimate and ocean current patterns are conducive to the production of organic matter, while the restricted sedimentary environments favor the preservation of organic matter.