重庆科技大学学报（自然科学版）2025，Vol.27Issue(1)：44-57,14.DOI:10.19406/j.issn.2097-4531.2025.01.007
古新世—始新世极热气候下陆相沉积系统响应与油气效应研究进展
Responses of the Terrestrial Sedimentary System to Paleocene-Eocene Thermal Maximum and Hydrocarbon Resource Effects:Progress and Prospects
摘要
Abstract
The Paleocene-Eocene thermal maximum(PETM)is a latest rapid global warming event in the geolog-ical history and provides an excellent geological analogue for understanding the current global warming.However,the rare terrestrial sedimentary records during the PETM period hinder our understanding how terrestrial sedimentary systems responde to extreme warming.Based on the newest studies,responses of the terrestrial sedimentary system to PETM and hydrocarbon resource effects are systematically summarized and analyzed,and the following five view-points are obtained:1)Extreme rainfall and enhanced continental weathering during the PETM led to frequent floods,gravity flows,and high sedimentation rates.2)In the sedimentary environment,high-saline and reducing conditions shifted from low-salinity and oxidizing conditions with eutrophication of water column and the proliferation of cyanobacteria.3)Cement types at the early diagenetic stage varied frequently,which was controlled by climatic and hydrochemical conditions.4)Low-latitude vegetations expanded toward the high latitudes,along with terrestri-al soils and vegetation absorbing large amounts of atmospheric CO2.Meanwhile,large amounts of light carbon were released due to the melting of high-latitude permafrost.5)The TOC content within PETM strata was mainly con-trolled by preservation and dilution conditions,whereas it may still have high potential for shale oil exploration due to contributions of sedimentary pre-and post-PETM strata.Nonetheless,there are still many deficiencies on under-standing the responses of terrestrial sedimentary systems under extreme warming climates.Deep understanding to the impacts of extreme climate events on terrestrial environmental evolution is beneficial to prevent threats from fu-ture terrestrial environmental changes and contribute to explorations of hydrocarbon resources during extreme cli-mates.关键词
极热气候/陆相沉积系统/碳循环/油气效应/古新世—始新世Key words
hyperthermal climate/terrestrial sedimentary system/carbon cycle/hydrocarbon resource effect/Pa-leocene-Eocene分类
地质学引用本文复制引用
谭先锋,高儇博,蒋威,王敦繁,刘建平,李雯雯,严雪齐,罗龙,王佳,瞿雪姣..古新世—始新世极热气候下陆相沉积系统响应与油气效应研究进展[J].重庆科技大学学报（自然科学版）,2025,27(1):44-57,14.基金项目
国家自然科学基金项目"古新世—始新世极热气候时期咸化湖泊物质分异作用及早期成岩行为研究"(42072140),"咸化湖盆烃源岩有机酸盐形成机制与成烃意义"(42403050),"东营凹陷早始新世干旱气候下湖相异重流沉积响应机制及油气地质意义"(42202170),"始新世—渐新世气候转型期海洋风尘铁肥效应及其碳汇机制研究"(42404087) （42072140）
重庆市杰出青年科学基金项目"极热气候环境下湖泊沉积-成岩系统及油气效应"(CSTB2022NSCQ-JQX0031) （CSTB2022NSCQ-JQX0031）
重庆市教委科技重大项目"极热气候高CO2浓度下湖泊水介质状态及油气富集"(KJZD-M202101502) （KJZD-M202101502）
