The material and energy cycle crossing Earth's interior and surface spheres is a cutting-edge hotspot in Earth science research,and a quantitative dynamic model serves as the foundation for analyzing multi-spheric...The material and energy cycle crossing Earth's interior and surface spheres is a cutting-edge hotspot in Earth science research,and a quantitative dynamic model serves as the foundation for analyzing multi-spheric interactions.Since the MesoCenozoic,the Caribbean and its adjacent regions have been sandwiched between the Pacific subduction and Atlantic extension systems,experiencing large-scale oceanic subduction,plate boundary reshaping,slab tearing,and massive magmatic events.These tectonic processes have modified the distribution of land and sea,created dynamic topography,altered the opening and closing of surface seaways,ocean circulation,weathering,and sedimentation patterns,and further influenced regional basin evolution.Thus,the Caribbean and its adjacent regions are ideal sites for studying multi-spheric interactions.In the context of multi-spheric interactions,what are the driving factors in the Meso-Cenozoic Caribbean region?How do they trigger surface effects?To address these key questions,this study reconstructs,for the first time,a time-varying subduction slab sinking rate model and subduction slab flux curve for the Caribbean region,providing a first-order kinematic model.It implies that the late Mesozoic and early Cenozoic were periods of the most intense regional subduction and the highest subduction carbon flux.Based on the kinematic model,further dynamic simulations are employed to calculate the land-sea distribution and dynamic topography changes induced by subduction processes since the Cenozoic.The results suggest that the high-buoyancy topography and east-west-aligned dynamic topography variations caused by Pacific plate subduction are primary features,which can well explain regional crust-mantle geophysical observations.These findings thus validate,from a dynamic process perspective,that the deep processes of multi-subduction systems since the Cenozoic have controlled surface effects such as land-sea distribution and topographic evolution in this region.Building on the dynamic model,this study assimilates surface sedimentary layer distribution data.We propose conducting three-dimensional interior-surface carbon cycle simulations as a dynamic framework for quantitatively assessing how regional deep processes influence surface evolution in the future.This would further merge paleoclimate,ocean currents,weathering,and sedimentation modules to simulate the enrichment processes of hydrocarbon resources in basins quantitatively.This represents a new direction in applied research on hydrocarbon enrichment theory under multi-spheric interactions.展开更多
基金supported by the National Natural Science Foundation of China(Grant Nos.42488201,92355001)the B-type Strategic Priority Program of the Chinese Academy of Sciences(Grant No.XDB42020102)the XPLORER PRIZE。
文摘The material and energy cycle crossing Earth's interior and surface spheres is a cutting-edge hotspot in Earth science research,and a quantitative dynamic model serves as the foundation for analyzing multi-spheric interactions.Since the MesoCenozoic,the Caribbean and its adjacent regions have been sandwiched between the Pacific subduction and Atlantic extension systems,experiencing large-scale oceanic subduction,plate boundary reshaping,slab tearing,and massive magmatic events.These tectonic processes have modified the distribution of land and sea,created dynamic topography,altered the opening and closing of surface seaways,ocean circulation,weathering,and sedimentation patterns,and further influenced regional basin evolution.Thus,the Caribbean and its adjacent regions are ideal sites for studying multi-spheric interactions.In the context of multi-spheric interactions,what are the driving factors in the Meso-Cenozoic Caribbean region?How do they trigger surface effects?To address these key questions,this study reconstructs,for the first time,a time-varying subduction slab sinking rate model and subduction slab flux curve for the Caribbean region,providing a first-order kinematic model.It implies that the late Mesozoic and early Cenozoic were periods of the most intense regional subduction and the highest subduction carbon flux.Based on the kinematic model,further dynamic simulations are employed to calculate the land-sea distribution and dynamic topography changes induced by subduction processes since the Cenozoic.The results suggest that the high-buoyancy topography and east-west-aligned dynamic topography variations caused by Pacific plate subduction are primary features,which can well explain regional crust-mantle geophysical observations.These findings thus validate,from a dynamic process perspective,that the deep processes of multi-subduction systems since the Cenozoic have controlled surface effects such as land-sea distribution and topographic evolution in this region.Building on the dynamic model,this study assimilates surface sedimentary layer distribution data.We propose conducting three-dimensional interior-surface carbon cycle simulations as a dynamic framework for quantitatively assessing how regional deep processes influence surface evolution in the future.This would further merge paleoclimate,ocean currents,weathering,and sedimentation modules to simulate the enrichment processes of hydrocarbon resources in basins quantitatively.This represents a new direction in applied research on hydrocarbon enrichment theory under multi-spheric interactions.
