• Login
    View Item 
    •   Home
    • Research
    • Articles
    • View Item
    •   Home
    • Research
    • Articles
    • View Item
    JavaScript is disabled for your browser. Some features of this site may not work without it.

    Browse

    All of KAUSTCommunitiesIssue DateSubmit DateThis CollectionIssue DateSubmit Date

    My Account

    Login

    Quick Links

    Open Access PolicyORCID LibguideTheses and Dissertations LibguideSubmit an Item

    Statistics

    Display statistics

    Faulted landforms, slip-rate, and tectonic implications of the eastern Lenglongling fault, northeastern Tibetan Plateau

    • CSV
    • RefMan
    • EndNote
    • BibTex
    • RefWorks
    Type
    Article
    Authors
    Gao, Fan
    Zielke, Olaf cc
    Han, Zhujun
    Guo, Peng
    Gai, Hailong
    Dai, Chenglong
    KAUST Department
    Physical Science and Engineering (PSE) Division
    KAUST Grant Number
    BAS/1/1339-01-01
    Date
    2022
    Embargo End Date
    2024-01-10
    Submitted Date
    2021-07-12
    Permanent link to this record
    http://hdl.handle.net/10754/675037
    
    Metadata
    Show full item record
    Abstract
    The Lenglongling fault (LLLF) is an important part of the Qilian-Haiyuan fault (QHF) zone along the NE Tibetan Plateau. The Jinqianghe fault (JQHF) branches off of the LLLF and forms a fault junction that separates middle and eastern LLLF. Currently, it is not well understood how/if strain from the LLLF is transmitted to the JQHF over geologic time scales and how seismically active the eastern section of the LLLF is. Recent studies indicate that the 1927 M8 Gulang earthquake ruptured the middle LLLF and propagated eastward onto the eastern LLLF instead of propagating onto the JQHF. To assess if this concurrent rupture of middle and eastern LLLF is (or might be) a common phenomenon, we measured the Holocene slip-rate at the Huoshaotai site, east of the LLLF – JQHF junction, to compare it with known rates from the middle LLLF. Using displaced geomorphic markers and radiocarbon dating, we determined a Holocene left-lateral slip-rate of 6.0 ± 0.8 mm/a for the eastern LLLF. This rate is only slightly below the consensus slip-rate for the middle LLLF (6.6 ± 0.3 mm/a; 6.4 ± 0.7 mm/a), suggesting a gradual strain transfer and similar seismic activity for both sections. Paleoseismic evidence further suggests that at least three preceding earthquakes may have ruptured both sections simultaneously during the Holocene, indicating that concurrent failure of both sections, as in 1927, may not be uncommon. Concurrent failure of middle LLLF and JQHF is however not reported. Hence, it appears that LLLF and JQHF act as independent seismo-tectonic entities, without substantial strain transfer or concurrent seismic activity. These observations contribute to a better understanding of the QHF zone and the potential for multi-fault rupture along it.
    Citation
    Gao, F., Zielke, O., Han, Z., Guo, P., Gai, H., & Dai, C. (2022). Faulted landforms, slip-rate, and tectonic implications of the eastern Lenglongling fault, northeastern Tibetan Plateau. Tectonophysics, 823, 229195. doi:10.1016/j.tecto.2021.229195
    Sponsors
    We thank Jinrui Liu for sharing the Monte Carlo codes. This work was funded by the National Natural Science Foundation of China (42002231) and the National Nonprofit Fundamental Research Grant of China, Institute of Geology, China Earthquake Administration (IGCEA2022, IGCEA1702) and the Special Project on Earthquake Research, the China Active Fault Survey Project—The South-North Seismic Zone Northern Segment (201408023). Further funding support came from King Abdullah University of Science and Technology (KAUST), Grant BAS/1/1339-01-01. There are no financial conflicts of interests for any author. The topographic data presented are archived in the Mendeley Data repository (Topographic data used in the paper of “Topographic data eastern LLLF”, Mendeley Data, v1, http://dx.doi.org/10.17632/49h6yct4n3.1).
    Publisher
    Elsevier BV
    Journal
    Tectonophysics
    DOI
    10.1016/j.tecto.2021.229195
    Additional Links
    https://linkinghub.elsevier.com/retrieve/pii/S0040195121004777
    ae974a485f413a2113503eed53cd6c53
    10.1016/j.tecto.2021.229195
    Scopus Count
    Collections
    Articles; Physical Science and Engineering (PSE) Division

    entitlement

     
    DSpace software copyright © 2002-2022  DuraSpace
    Quick Guide | Contact Us | KAUST University Library
    Open Repository is a service hosted by 
    Atmire NV
     

    Export search results

    The export option will allow you to export the current search results of the entered query to a file. Different formats are available for download. To export the items, click on the button corresponding with the preferred download format.

    By default, clicking on the export buttons will result in a download of the allowed maximum amount of items. For anonymous users the allowed maximum amount is 50 search results.

    To select a subset of the search results, click "Selective Export" button and make a selection of the items you want to export. The amount of items that can be exported at once is similarly restricted as the full export.

    After making a selection, click one of the export format buttons. The amount of items that will be exported is indicated in the bubble next to export format.