Excessive carbon emissions have resulted in the greenhouse effect, causing considerable global climate change. Marine carbon storage has emerged as a crucial approach to addressing climate change. The Qiantang Sag(QTS...Excessive carbon emissions have resulted in the greenhouse effect, causing considerable global climate change. Marine carbon storage has emerged as a crucial approach to addressing climate change. The Qiantang Sag(QTS) in the East China Sea Shelf Basin, characterized by its extensive area, thick sedimentary strata, and optimal depth, presents distinct geological advantages for carbon dioxide(CO_(2)) storage. Focusing on the lower section of the Shimentan Formation in the Upper Cretaceous of the QTS, this study integrates seismic interpretation and drilling data with core and thin-section analysis. We reveal the vertical variation characteristics of the strata by providing a detailed stratigraphic description. We use petrophysical data to reveal the development characteristics of high-quality carbon-storage layers and favorable reservoircaprock combinations, thereby evaluating the geological conditions for CO_(2) storage in various stratigraphic sections. We identify Layer B of the lower Shimentan Formation as the most advantageous stratum for marine CO_(2) storage. Furthermore, we analyze the carbon emission trends in the adjacent Yangtze River Delta region. Considering the characteristics of the source and sink areas, we suggest a strong correlation between the carbon emission sources of the Yangtze River Delta and the CO_(2) storage area of the QTS, making the latter a priority area for conducting experiments on marine CO_(2) storage.展开更多
It is widely accepted that the South China Block was formed by multi-terrane accretion events[1],and the East China Sea(ECS)basement is believed to be the offshore extent of Cathaysia[2,3].Recently,it has been suggest...It is widely accepted that the South China Block was formed by multi-terrane accretion events[1],and the East China Sea(ECS)basement is believed to be the offshore extent of Cathaysia[2,3].Recently,it has been suggested that the ECS basement is an exotic terrane(Fig.1a)that collided with Eurasia at~88[4]or 100 Ma[5];these speculations are based on the onshore granitoid magmatism gap between~90 and~50 Ma[5]or the specific geophysical features and crustal structure of the ECS[4].If supported,this hypothesis would significantly change the understanding of regional geology.However,the crustal evolution of the ECS is still poorly understood and the proposed collision also lacks effective constraints.展开更多
基金Key Laboratory of Deep-time Geography and Environment Reconstruction and Applications of Ministry of Natural ResourcesChengdu University of Technology:DGERA20231110。
文摘Excessive carbon emissions have resulted in the greenhouse effect, causing considerable global climate change. Marine carbon storage has emerged as a crucial approach to addressing climate change. The Qiantang Sag(QTS) in the East China Sea Shelf Basin, characterized by its extensive area, thick sedimentary strata, and optimal depth, presents distinct geological advantages for carbon dioxide(CO_(2)) storage. Focusing on the lower section of the Shimentan Formation in the Upper Cretaceous of the QTS, this study integrates seismic interpretation and drilling data with core and thin-section analysis. We reveal the vertical variation characteristics of the strata by providing a detailed stratigraphic description. We use petrophysical data to reveal the development characteristics of high-quality carbon-storage layers and favorable reservoircaprock combinations, thereby evaluating the geological conditions for CO_(2) storage in various stratigraphic sections. We identify Layer B of the lower Shimentan Formation as the most advantageous stratum for marine CO_(2) storage. Furthermore, we analyze the carbon emission trends in the adjacent Yangtze River Delta region. Considering the characteristics of the source and sink areas, we suggest a strong correlation between the carbon emission sources of the Yangtze River Delta and the CO_(2) storage area of the QTS, making the latter a priority area for conducting experiments on marine CO_(2) storage.
基金supported by the National Natural Science Foundation of China(41890811,41702228,and 91858214)。
文摘It is widely accepted that the South China Block was formed by multi-terrane accretion events[1],and the East China Sea(ECS)basement is believed to be the offshore extent of Cathaysia[2,3].Recently,it has been suggested that the ECS basement is an exotic terrane(Fig.1a)that collided with Eurasia at~88[4]or 100 Ma[5];these speculations are based on the onshore granitoid magmatism gap between~90 and~50 Ma[5]or the specific geophysical features and crustal structure of the ECS[4].If supported,this hypothesis would significantly change the understanding of regional geology.However,the crustal evolution of the ECS is still poorly understood and the proposed collision also lacks effective constraints.
