GDGT distribution of Mariana Trough tuffs and background sediments

DOI

After all tuffs and background sediments were freeze-dried, 30 ml mixed solution of dichloromethane and methanol (9:1, V/V) was added to each Teflon tube containing ca. 10 g sample. The total lipid extract was extracted ultrasonically (repeated 5 times) and dried with nitrogen. The GDGTs were separated from total lipids by eluting silica gel column with mixture of dichloromethane and methanol (1:1, V/V). The GDGTs fractions were filtered with 0.45 μm PTFE membrane and then transferred to 250 μl insert vial. The internal standard C46 GDGT was added before the GDGTs were analyzed using an Agilent 1200 series liquid chromatography connected to an Agilent 6460A triple-quadruple mass spectrometer.#ringstetra: the weighted average number of cyclopentane moieties for tetramethylated brGDGTs#ringspenta: the weighted average number of cyclopentane moieties for pentamethylated brGDGTs#rings_tetra=(Ib+2×Ic)/(Ia+Ib+Ic)#rings_penta=(IIb+IIb'+2×IIc+2×IIC')/(IIa+IIa'+IIb+IIb'+IIc+IIc' )Rings_(penta-hexa)=IIb+IIb'+IIc+IIc'+IIIb+IIIb'+IIIc+IIIc'

Identifier
DOI https://doi.org/10.1594/PANGAEA.957628
Related Identifier IsPartOf https://doi.org/10.1594/PANGAEA.957644
Related Identifier References https://doi.org/10.1038/s43247-023-00732-6
Metadata Access https://ws.pangaea.de/oai/provider?verb=GetRecord&metadataPrefix=datacite4&identifier=oai:pangaea.de:doi:10.1594/PANGAEA.957628
Provenance
Creator Li, Taisi ORCID logo; Li, Jiwei ORCID logo; Longman, Jack ORCID logo; Peng, Xiaotong
Publisher PANGAEA
Publication Year 2023
Funding Reference National Key Research and Development Program of China https://doi.org/10.13039/501100012166 Crossref Funder ID 2022YFC2805500 ; National Natural Science Foundation of China https://doi.org/10.13039/501100001809 Crossref Funder ID 41576038 Grant No. 41576038; National Natural Science Foundation of China https://doi.org/10.13039/501100001809 Crossref Funder ID 41876050 Grant No. 41876050; National Natural Science Foundation of China https://doi.org/10.13039/501100001809 Crossref Funder ID 42176072 Grant No. 42176072
Rights Creative Commons Attribution 4.0 International; https://creativecommons.org/licenses/by/4.0/
OpenAccess true
Representation
Resource Type Dataset
Format text/tab-separated-values
Size 747 data points
Discipline Earth System Research
Spatial Coverage (140.997W, 11.764S, 141.619E, 12.617N); Western Pacific Ocean
Temporal Coverage Begin 2018-09-06T01:26:00Z
Temporal Coverage End 2019-09-30T08:41:00Z