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Wu, Jiawang; Liu, Zhifei; Yu, Xun (2022): Geochemistry of IODP Hole U1502B at the South China Sea rifted margin [dataset bundled publication]. PANGAEA, https://doi.org/10.1594/PANGAEA.946146

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Published: 2022-07-08 • DOI registered: 2022-08-30

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Abstract:
Here we present major and trace elements, and radiogenic Sr and Nd isotopes for 50 whole-rock samples taken from IODP Hole U1502B. During the IODP Expeditions 367/368, the drilling at IODP Hole U1502B (18°27.8798′ N, 116°13.8409′ E; 3763.6 m below seafloor) penetrates ~182 m into underlying basaltic basement (739.16–920.95 m) with a core recovery of 70.7%), which was generated at a rifting margin of the South China Sea (SCS). The recovered lavas show petrographic characteristics of mid-ocean ridge basalt (MORB), but suffered pervasively from hydrothermal alteration. This sequence represents the oldest SCS oceanic crust ever drilled in-situ, and offers a globally unique window to explore the hydrothermal processes during continental breakup. This dataset represents the first detailed report of hydrothermally altered basalts for the South China Sea (SCS).
Keyword(s):
Hydrothermal alteration; IODP Exp. 367/368; IODP Hole U1502B; Mid-ocean ridge basalt (MORB); plagioclase; South China Sea; Sr isotopes
Supplement to:
Wu, Jiawang; Liu, Zhifei; Yu, Xun (2021): Plagioclase-regulated hydrothermal alteration of basaltic rocks with implications for the South China Sea rifting. Chemical Geology, 585, 120569, https://doi.org/10.1016/j.chemgeo.2021.120569
Funding:
China Postdoctoral Science Foundation, grant/award no. 2018M640418
China Postdoctoral Science Foundation, grant/award no. 2019T120352
National Key Research and Development Program of China, grant/award no. 2018YFE0202402
National Natural Science Foundation of China (NSFC), grant/award no. 41530964
National Natural Science Foundation of China (NSFC), grant/award no. 41806064
National Natural Science Foundation of China (NSFC), grant/award no. 41906051
Shanghai Association for Science and Technology (SAST), grant/award no. 20590780200: Shanghai Science and Technology Innovation Action Plan
Coverage:
Latitude: 18.464663 * Longitude: 116.230682
Date/Time Start: 2017-04-29T19:30:00 * Date/Time End: 2017-05-13T20:50:00
License:
Creative Commons Attribution 4.0 International (CC-BY-4.0)
Size:
5 datasets

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Datasets listed in this bundled publication

  1. Wu, J; Liu, Z; Yu, X (2022): Major-element concentrations of hydrothermally altered basaltic rocks in IODP Hole 368-U1502B (Dataset S1). https://doi.org/10.1594/PANGAEA.946068
  2. Wu, J; Liu, Z; Yu, X (2022): Trace-element concentrations of hydrothermally altered basaltic rocks in IODP Hole 368-U1502B (Dataset S2). https://doi.org/10.1594/PANGAEA.946071
  3. Wu, J; Liu, Z; Yu, X (2022): Rare-earth-element (REE) concentrations of hydrothermally altered basaltic rocks in IODP Hole U1502B (Dataset S3). https://doi.org/10.1594/PANGAEA.946082
  4. Wu, J; Liu, Z; Yu, X (2022): Strontium and Nd isotope compositions of hydrothermally altered basaltic rocks in IODP Hole 368-U1502B (Dataset S4). https://doi.org/10.1594/PANGAEA.946143
  5. Wu, J; Liu, Z; Yu, X (2022): Description of investigated samples in IODP Hole 368-U1502B (Table S1). https://doi.org/10.1594/PANGAEA.946145