TY -的A2 Quanyou刘盟——张,库恩盟——彭,君非盟,刘胖子AU -李,本盟——夏,菁AU - Cheng泗洪县AU -杨、翳明友,曾姚AU -温,明非盟- Liu Dongmei盟——黄、沂州盟——钟,李盟——刘,裴盟——江Xiaojun PY - 2020 DA - 20/12/18 TI -深部流体在沉积有机质富集中的作用:Ordovician-Early末的一个案例研究在长江上游地区志留纪和长江下游地区寒武纪早期,中国南方SP - 8868638六世- 2020 AB -有机质页岩的物质基础是生成碳氢化合物,以及页岩气的主要储集空间和渗流通道。当热演化程度一致时，现代页岩有机碳含量受原始沉积有机质丰度的影响。深部流体对沉积有机质富集具有重要影响，但作用机制尚不清楚。本文通过对下扬子地区下寒武统页岩和上奥陶统-下志留统页岩的研究，探讨了热液和火山活动对沉积有机质富集的影响。以氧化还原和生物产率为指标进行研究。结果表明:热液或火山活动通过影响水体表面的气候变化和营养物来源，减少水体底部的水量，影响了沉积有机质的富集。下扬子地区下寒武统王银铺组页岩中，热液成因引起了硅过剩。王银铺组沉积时期，强烈的热液活动增加了水体表面生物生产力，增强了水体底部的还原性，使丰富的沉积有机质得到很好的保存。 During the sedimentary period of the lower upper Ordovician Wufeng Formation and the lower Silurian Longmaxi Formation in the upper Yangtze region, frequent volcanic activities caused high biological productivity on the waterbody surface and strong reducibility at the bottom of the waterbody. As a result, the abundant organic matter deposited from the water surface can be well preserved. During the sedimentary period of the upper Longmaxi Formation, volcanic activities died down gradually then disappeared, causing the biological productivity on the water surface to decrease. Besides, the small amount of organic matter deposited from the water surface was destroyed due to oxidation. SN - 1468-8115 UR - https://doi.org/10.1155/2020/8868638 DO - 10.1155/2020/8868638 JF - Geofluids PB - Hindawi KW - ER -