Tools
Tools
Zeng, Min, Zhang, Ruisi, Chen, Si, Liu, Xinyu, Li, Chenwei, Ettensohn, Frank R. and Bie, Lidong 
ORCID: https://orcid.org/0000-0002-8130-7084
(2021)
Reconstructing Ocean-Plate Stratigraphy (OPS) to understand accretionary style and mélange fabric: Insights from the Bangong-Nujiang suture (Tibet, China).
Geophysical Research Letters, 48 (18).
ISSN 0094-8276
Preview |
PDF (Zeng et al. 2021 Tibet-accepted)
- Accepted Version
Download (1MB) | Preview |
Abstract
Ocean-plate stratigraphy (OPS) refers to the lithostratigraphic column atop an ocean plate, which becomes scraped off during subduction and preserved in accretionary complex (AC). Herein, based on structural, stratigraphic, and geochronological studies of ACs from the Bangong-Nujiang suture, we demonstrate that OPS can facilitate interpreting structural and compositional heterogeneities in ACs. Carefully correlated OPSs reveal that, on the overall sediment-rich lower plate, different types of basement topography correspond to the accretion of distinct litho-structural assemblages. In particular, subduction of the major, high-relief Zhonggang seamount eroded the earlier margin and was subsequently accreted as coherent seamount slices. In contrast, subduction of the lower-relief, Gaize seamount halted frontal accretion of trailing sediments, which were dragged downward to the seismogenic depth and underplated as pervasive, shear-related broken formations. Such broken formations may fingerprint past lower-relief-seamount subduction in other fossil ACs.
| Item Type: | Article |
|---|---|
| Additional Information: | Funding Information: This study was supported by the Chinese National Natural Science Foundation (No. 41102065 and 41872110) and Chengdu University of Technology (2020ZF11407). |
| Uncontrolled Keywords: | accretionary complex,bangong-nujiang meso-tethys suture,melange fabric,ocean-plate stratigraphy,oceanic basement topography,trench fill,geophysics,earth and planetary sciences(all) ,/dk/atira/pure/subjectarea/asjc/1900/1908 |
| Faculty \ School: | Faculty of Science > School of Environmental Sciences |
| UEA Research Groups: | Faculty of Science > Research Groups > Geosciences |
| Related URLs: | |
| Depositing User: | LivePure Connector |
| Date Deposited: | 27 Apr 2022 11:30 |
| Last Modified: | 16 Dec 2024 01:37 |
| URI: | https://ueaeprints.uea.ac.uk/id/eprint/84810 |
| DOI: | 10.1029/2021GL094457 |
Downloads
Downloads per month over past year
Actions (login required)
 |
View Item |