Conference proceeding
Data report; Major and trace elements and Sr-Nd-Pb-Hf isotope composition of three granite clasts from Hole U1501D in the South China Sea (IODP Expedition 367/368/368X)
Proceedings of the International Ocean Discovery Program. Expedition reports, Vol.367/368
International Ocean Discovery Program
04/27/2022
DOI: 10.14379/iodp.proc.367368.202.2022
Abstract
During International Ocean Discovery Program Expeditions 367/368/368X, Hole U1501D was cored on the continental shelf (2846 meters below sea level) in the northern South China Sea (SCS). In Hole U1501D, sediments were recovered from 433.5 to 644.3 meters below seafloor (mbsf) and the acoustic basement was penetrated at 598.91 mbsf. The acoustic basement is a stratigraphic boundary at which late Eocene Cenozoic sediments likely unconformably overlay heterolithic Mesozoic sandstones that are intercalated with rare siltstones and subordinate conglomerate with pebble- and cobble-sized igneous clasts of proximal provenance. Here, we present major and trace elements and Sr-Nd-Pb-Hf isotope data of a fine-grained granite pebble, a medium-grained granite cobble, and a porphyritic volcanic pebble. The data show that these clasts are relics of the Mesozoic subduction-related magmatism that was active along the southeast Asian margin prior to the Cenozoic rifting. The Pb isotope composition of the clasts partially overlaps with the enriched Cenozoic mid-ocean-ridge basalt type and intraplate basalts of the SCS. However, the clasts are distinct from the Cenozoic basalt volcanism in Sr-Nd-Hf isotope space. Thus, Sr-Nd-Hf isotope systematics of the Cenozoic basalts might be useful in detecting traces of crustal contamination in the earliest rift basalts of the SCS that may have erupted through the Mesozoic continental basement.
Details
- Title: Subtitle
- Data report; Major and trace elements and Sr-Nd-Pb-Hf isotope composition of three granite clasts from Hole U1501D in the South China Sea (IODP Expedition 367/368/368X)
- Creators
- Susanne M. StraubArturo Gomez-TuenaMichael J. DoraisZhen Sun - South China Sea Institute Of OceanologyJian ZhiminJoann M. StockHans Christian LarsenAdam KlausCarlos A. Alvarez ZarikianJacopo BoagaAnne BriaisChen YifengAkira FurusawaJessica L. HinojosaTobias W. HoefigKan-Hsi HsiungHuang BoaqiHuang XiaolongBenjamin G. JohnsonLei ChaoLi LiLiu ZhifeiAntonio LunaClaudia LupiAnders J. McCarthyMichael NirrengartenCaroline M. RobinsonIsabel SauermilchSteven M. SkinnerSu XiangXiang RongRajeev YadavYi LiangZhang CuimeiZhang JinchangZhang YangNing ZhaoZhong LifengStephen A. BowdenDeniz CukurKelsie A. DaddDing WeiweiEric C. FerreFabricio FerreiraAaron J. GeweckeHuang EnqingJiang ShijunJin HaiyanRobert M. KurzawskiLi BaohuaLi YanpingJian LinChang LiuLiu ChuanlianGeoffroy MohnLachit Singh NingthoujamNobuaki OsonoDavid W. PeatePatricia PersaudQiu NingSara SatolliJulie C. SchindlbeckTian LiyanFroukje M. van der ZwanWan ShimingWu HuaichunInternational Ocean Discovery Program, Expedition 367 ScientistsZhong Guangfa
- Resource Type
- Conference proceeding
- Publication Details
- Proceedings of the International Ocean Discovery Program. Expedition reports, Vol.367/368
- Conference
- International Ocean Discovery Program
- DOI
- 10.14379/iodp.proc.367368.202.2022
- ISSN
- 2377-3189
- eISSN
- 2377-3189
- Publisher
- International Ocean Discovery Program
- Number of pages
- 11
- Grant note
- DOI: 10.13039/100012530, name: U.S. Science Support Program, Lamont-Doherty Earth Observatory
- Alternative title
- Proceedings of the International Ocean Discovery Program; South China Sea rifted margin; Expeditions 367 and 368 of the riserless drilling platform from and to Hong Kong, China; Sites U1499-U1500; 7 February -9 April, 2017; and Hong Kong, China to Shanghai, China; Sites U1501-U1505; 9 April-11 June, 2017; and Expedition 368X of the riserless drilling platform from and to Hong Kong, China; return to Site U1503; 15 November-8 December, 2018
- Language
- English
- Date published
- 04/27/2022
- Academic Unit
- Earth and Environmental Sciences; Honors Program
- Record Identifier
- 9984258459902771
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