The Evolution of the Taiwan Forearc Basin Constrained by the Volcanic Activities of the North Luzon Island Arc and the Orogenic Events of the Taiwan Orogen Belt
Xu Shumei
Wang Linhua
Li Sanzhong
Liu Yongjiang
Zi Ke
Quan Ri
Shu Pengcheng
Zhou Yue
Guo Ruijie
Zhang Baozhu
Wang Manxi
Liu Zhengdong
Abstract：The paper aims to analysis the accommodation feature,basin boundaries and basement properties of the Taiwan forearc basin,and probe into the sequence basic configuration,main controlling factors and evolution stage of the Taiwan forearc basin.Based on the orogenic events,such as the initial and normal subduction of the South China Sea Plate,slabs under plating,accretion,exhumation,uplift and denudation of the accretionary prism and the series of volcanic activities of the North Luzon Island Arc,combined with the sequence configuration analysis of the seismic profiles,this paper will study the basin character,boundary nature and evolutionary stages of the Taiwan forearc basin in more depth.The evolution history of Taiwan forearc basin can be divided into three stages:"rectangular rift basin in the spreading period","wedge-shaped forearc basin in the initial collision period"and"sheet(residual)forearc basin stage in the arc-continental collision period".The initially eastern boundary of the rectangular rift basin is the South China Sea oceanic crust and later the North Luzon Island Arc,the western boundary is the Philippine Sea oceanic crust,and the basement is forearc split mantle.The eastern and western boundaries of the wedge-shaped forearc basin are the North Luzon Arc and the subducted South China Sea Plate margin which is thickened by the under platings labs respectively,and part of the north Luzon Island Arc gradually evolved into the basement of the forearc basin.The eastern boundary of the deformed residual forearc basin is the North Luzon Island Arc,and the western boundary is the Taiwan accretionary wedge that has been exhumed and continuously uplifted this period.
Keywords：sequence configurationseismic sequenceforearc basinTaiwan OrogenThe North Luzon Island ArcTaiwantectonics
Publication Date：2025-02-14
Online Publishing Date：2025-08-15(First online date of this platform, not the publication date of the document)
Pages：12( 466-477 )