IOCAS-IR  > 海洋地质与环境重点实验室
Investigation of an oceanic plateau formation and rifting initiation model implied by the Caroline Ridge on the Caroline Plate, western Pacific
Zhang, Zhengyi1,2,3,4,5; Dong, Dongdong1,2,4; Sun, Weidong2,4,5; Zhang, Guangxu1; Bai, Yongliang6
2020-01-04
Source PublicationINTERNATIONAL GEOLOGY REVIEW
ISSN0020-6814
Pages15
Corresponding AuthorDong, Dongdong(dongdongdong@qdio.ac.cn) ; Sun, Weidong(weidongsun@qdio.ac.cn)
AbstractThe rifting of oceanic plateaus is an important mechanism for initiating lithospheric break-up and subsequent seafloor spreading. In this study, we present the latest multichannel seismic data investigating the Caroline Ridge and provide one of the typical cases for initial oceanic plateau evolution. We reveal that a smooth basement reflector (R2), as the top of the lava flows, is subparallel to the sediments with horizontal seismic reflections over the surface of the Caroline Ridge. Thick layer-parallel lava flows beneath the R2 appear within the crust. Large seamounts in the Sorol Trough possess abundant saucer-shaped intracrustal reflectors, and the overlying sediments were destroyed by intrusive bodies. The overlying sedimentary sequences, basement, and thick lava flows on the Caroline Ridge flanks were faulted by opposing normal fault sets, and the eruptions of the seamounts deformed the strata. A widespread bright horizontal reflector (R1), as an unconformity inside the Caroline Ridge sediments, truncates the lower tilted sediment layers and is itself cut by normal faults in the flank strata. Furthermore, we propose that subaerial lava flows extended laterally from the hotspot magmatism localizing in the Sorol Trough and led to Caroline Ridge formation. The initial rifting of the Caroline Ridge occurred during the Early-Middle Miocene. Limited volcanoes concentrate only in the Sorol Trough due to the attenuated thermal effect. It is suggested that dome uplifting and far-field force could have jointly caused initial rifting process of the Caroline Ridge.
KeywordCaroline Ridge Sorol Trough Oceanic plateau rifting Hotspot Seismic profile Sedimentary sequence Crustal structure
DOI10.1080/00206814.2019.1707126
Indexed BySCI
Language英语
Funding ProjectNational Natural Science Foundat-ionof China[41976051] ; National Natural Science Foundat-ionof China[91958211] ; National Programon Global Change and Air-Sea Interaction[GASI-GEOGE01] ; Key Research Program of Center for Ocean Mega Scienceof CAS[KEXUE2018G10]
WOS Research AreaGeology
WOS SubjectGeology
WOS IDWOS:000505456700001
PublisherTAYLOR & FRANCIS INC
Citation statistics
Document Type期刊论文
Identifierhttp://ir.qdio.ac.cn/handle/337002/164161
Collection海洋地质与环境重点实验室
Corresponding AuthorDong, Dongdong; Sun, Weidong
Affiliation1.Chinese Acad Sci, Inst Oceanol, CAS Key Lab Marine Geol & Environm, Qingdao, Shandong, Peoples R China
2.Qingdao Natl Lab Marine Sci & Technol, Lab Marine Geol, Qingdao, Shandong, Peoples R China
3.Univ Chinese Acad Sci, Beijing, Peoples R China
4.Chinese Acad Sci, Ctr Ocean Megasci, Qingdao, Shandong, Peoples R China
5.Chinese Acad Sci, Ctr Deep Sea Res, Inst Oceanol, Qingdao, Shandong, Peoples R China
6.China Univ Petr, Sch Geosci, Qingdao, Shandong, Peoples R China
First Author AffilicationInstitute of Oceanology, Chinese Academy of Sciences
Corresponding Author AffilicationInstitute of Oceanology, Chinese Academy of Sciences
Recommended Citation
GB/T 7714
Zhang, Zhengyi,Dong, Dongdong,Sun, Weidong,et al. Investigation of an oceanic plateau formation and rifting initiation model implied by the Caroline Ridge on the Caroline Plate, western Pacific[J]. INTERNATIONAL GEOLOGY REVIEW,2020:15.
APA Zhang, Zhengyi,Dong, Dongdong,Sun, Weidong,Zhang, Guangxu,&Bai, Yongliang.(2020).Investigation of an oceanic plateau formation and rifting initiation model implied by the Caroline Ridge on the Caroline Plate, western Pacific.INTERNATIONAL GEOLOGY REVIEW,15.
MLA Zhang, Zhengyi,et al."Investigation of an oceanic plateau formation and rifting initiation model implied by the Caroline Ridge on the Caroline Plate, western Pacific".INTERNATIONAL GEOLOGY REVIEW (2020):15.
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