CAJ | 학술논문

运用沉积学和高分辨率层序地层学理论与方法，基于岩心、录井、测井等资料的综合分析，对兴县地区山西组进行了基准面旋回研究，识别出1个中期旋回（MSC1）和5个短期旋回（SSC1～SSC5），建立了山西组高分辨率层序地层格架，并在格架范围内划分了煤系发育的沉积体系和微相。研究表明，区内山西组为河控三角洲沉积体系，沉积微相以泥炭沼泽、（水下）分流河道和（水下）分流间湾为主，煤层主要形成于三角洲平原或者三角洲前缘（水下）分流间湾淤积变浅的泥炭沼泽环境。基准面旋回对聚煤演化及煤层的空间分布起着重要的控制作用，总体上煤层主要形成于中期基准面旋回上升半旋回的中上部和下降半旋回的底部，而前者之上发育的短期基准面上升半旋回的顶部，即最大可容空间附近更易形成厚煤层。
운용침적학화고분변솔층서지층학이론여방법，기우암심、록정、측정등자료적종합분석，대흥현지구산서조진행료기준면선회연구，식별출1개중기선회（MSC1）화5개단기선회（SSC1～SSC5），건립료산서조고분변솔층서지층격가，병재격가범위내화분료매계발육적침적체계화미상。연구표명，구내산서조위하공삼각주침적체계，침적미상이니탄소택、（수하）분류하도화（수하）분류간만위주，매층주요형성우삼각주평원혹자삼각주전연（수하）분류간만어적변천적니탄소택배경。기준면선회대취매연화급매층적공간분포기착중요적공제작용，총체상매층주요형성우중기기준면선회상승반선회적중상부화하강반선회적저부，이전자지상발육적단기기준면상승반선회적정부，즉최대가용공간부근경역형성후매층。
Using sedimentology and high-resolution sequence stratigraphy theory and methodology studied Shanxi Formation datum plane cycles in the Xingxian area based on comprehensive analysis of rock core, geological and geophysical well logging data, have identified 1 mid-term sequence cycle (MSC1) and 5 short-term sequence cycles (SSC1~SSC5), Thus the Shanxi Formation high-resolu?tion sequence stratigraphic framework have been established, and divided coal measures developing sedimentary system and microfa?cies within the framework. The study has shown that the Shanxi Formation in the area belongs to fluvial-dominated delta sedimentary system; microfacies have mainly peat bog (submerged), distributary channel (submerged) and interdistributory bay. Coal seams were mainly formed in delta plain or delta front (submerged) interdistributory bay silted shoal peat bog environment. Datum plane cycle plays an important controlling role in coal accumulating evolution and coal seams spatial distribution. As a whole, coal seams were mainly formed within middle upper part of rising half circle and bottom part of falling half circle in mid-term datum plane cycle. While the top part of short-term datum plane rising half cycle developed upon the former, or near the maximum accommodation space is easier to form thick coal seams.