Obreht Igor obrehtigor@gmail.com 0000-0001-9710-8365 Institute of Geosciences, Johannes Gutenberg-University, Mainz, Germany https://ror.org/023b0x485 Lückge Andreas andreas.lueckge@bgr.de 0000-0002-3269-7063 Federal Institute for Geosciences and Natural Resources BGR https://ror.org/04d77de73 Mohtadi Mahyar mmohtadi@marum.de 0000-0003-3306-0969 MARUM - Center for Marine Environmental Sciences, University Bremen MARUM http://www.marum.de/ https://ror.org/04ers2y35 Zahajská Petra petra.zahajska@unibe.ch 0000-0001-5858-0616 University of Bern UNIBE https://ror.org/02k7v4d05 Schefuß Enno eschefuss@marum.de 0000-0002-5960-930X MARUM - Center for Marine Environmental Sciences, University Bremen MARUM http://www.marum.de/ https://ror.org/04ers2y35 Scholz Denis scholzd@uni-mainz.de 0000-0002-0055-8915 Institute of Geosciences, Johannes Gutenberg-University, Mainz, Germany https://ror.org/023b0x485 Wörmer Lars lwoermer@marum.de 0000-0002-3673-3826 MARUM - Center for Marine Environmental Sciences, University Bremen MARUM http://www.marum.de/ https://ror.org/04ers2y35 Hällberg Petter petter_hallberg@hotmail.com Uppsala University UU http://www.uu.se https://ror.org/048a87296 Budsky Alexander alexander.budsky@kaernten.museum Landesmuseum Kärnten https://ror.org/04cj0jk63 Adolphi Florian florian.adolphi@awi.de http://www.geology.lu.se/florian-adolphi 0000-0003-0014-8753 Alfred Wegener Institute for Polar and Marine Research, Bremerhaven (1986-2013) AWI http://www.awi.de https://ror.org/032e6b942 Haug Gerald H gerald.haug@mpic.de https://en.wikipedia.org/wiki/Gerald_Haug Max Planck Institute for Chemistry MPIC https://www.mpic.de/ https://ror.org/02f5b7n18 Grosjean Martin martin.grosjean@unibe.ch 0000-0002-3553-8842 Oeschger Centre for Climate Change Research, University of Bern https://ror.org/02k7v4d05 Hinrichs Kai-Uwe khinrichs@uni-bremen.de 0000-0002-0739-9291 MARUM - Center for Marine Environmental Sciences, University Bremen MARUM http://www.marum.de/ https://ror.org/04ers2y35 2026 Carbon (δ13C) and hydrogen (δD) isotope composition of leaf wax n-alkanes from sediment core SO130_289KL, northeastern Arabian Sea, reflecting hydroclimate and vegetation changes during the last deglaciation dataset https://doi.org/10.1594/PANGAEA.993862 2026-05-06T06:19:49 This dataset contains stable carbon (δ13C) and hydrogen (δD) isotope measurements of long-chain n-alkanes (primarily n-C31) extracted from sediment core SO130_289KL (23°07.34′N, 66°29.84′E; 571 m water depth) from the northeastern Arabian Sea. The samples span the last deglaciation and were analyzed to reconstruct past hydroclimate and vegetation dynamics in the Indus River catchment. Lipid extracts were separated into fractions and analyzed using gas chromatography–isotope ratio mass spectrometry (GC-IRMS). δ13C values provide information on vegetation type (C3 vs. C4 plants), while δD values reflect precipitation isotopic composition after correcting for vegetation effects and global ice volume changes. Analytical precision is ±0.3‰ for δ13C and ±3‰ for δD. This dataset was generated to complement high-resolution marine proxy records generated by mass spectrometry and hyperspectral inaging and to link oceanographic variability with continental climate and monsoon-driven hydrological changes. Depth is presented as centimeters below seafloor (cmbsf) and age as before the year 2000 CE (b2k). 66.497333 66.497333 23.122333 23.122333 66.497333 23.122333 1998-04-21T00:00:00 1998-04-21T00:00:00 2.61 3.56 German Research Foundation DFG http://www.dfg.de/en/ https://doi.org/10.13039/501100001659 464898428 Micrometer-scale biomarker and elemental imaging on sediments from the northeastern Arabian Sea – reconstruction of the Indian monsoon evolution on a sub-decadal scale in the Holocene and the Bølling-Allerød interstadial https://gepris.dfg.de/project/464898428 SO130_289KL 23.122333 66.497333 -571.0 1998-04-21T00:00:00 0.0 SO130 SO130 MAKRAN 2 MAKRAN 2 Dubai, United Arab Emirates 1998-04-03T00:00:00 1998-04-03 Karachi, Pakistan 1998-05-03T00:00:00 1998-05-03 Sonne https://en.wikipedia.org/wiki/RV_Sonne DFCG 6909777 von Rad, Ulrich von Rad, Ulrich doi:10.2312/cr_so130 20060045 Sonne https://en.wikipedia.org/wiki/RV_Sonne DFCG 6909777 Kasten corer KAL 20.2 m 72 CC-BY-4.0 Creative Commons Attribution 4.0 International https://creativecommons.org/licenses/by/4.0/ DEPTH, sediment/rock Depth sed m depth http://purl.obolibrary.org/obo/PATO_0001595 sediment http://purl.obolibrary.org/obo/ENVO_00002007 rock Length L http://dbpedia.org/resource/Length Obreht Igor obrehtigor@gmail.com 0000-0001-9710-8365 mbsf Depth sed [m] (mbsf) Age Age ka b2k age http://purl.obolibrary.org/obo/PATO_0000011 Obreht Igor obrehtigor@gmail.com 0000-0001-9710-8365 Age [ka b2k] n-Alkane C31, δD C31 δD ‰ SMOW Gas chromatography - isotope ratio mass spectrometry (GC-IRMS) Obreht Igor obrehtigor@gmail.com 0000-0001-9710-8365 C31 δD [‰ SMOW] n-Alkane C31, δD C31 δD ‰ SMOW Gas chromatography - isotope ratio mass spectrometry (GC-IRMS) Obreht Igor obrehtigor@gmail.com 0000-0001-9710-8365 corrected δD precipitation C31 δD [‰ SMOW] (corrected δD precipitation) δ Deuterium, n-alkane C31, uncertainty δD n-alkane C31 unc hentriacontane C31 https://www.ebi.ac.uk/chebi/searchId.do?chebiId=CHEBI:5659 Obreht Igor obrehtigor@gmail.com 0000-0001-9710-8365 δD n-alkane C31 unc n-Alkane C31, δ13C C31 δ13C ‰ PDB δ13C http://en.wikipedia.org/wiki/List_of_elements_by_stability_of_isotopes Gas chromatography - isotope ratio mass spectrometry (GC-IRMS) Obreht Igor obrehtigor@gmail.com 0000-0001-9710-8365 vs. VPDB C31 δ13C [‰ PDB] (vs. VPDB) n-Alkane C31, δ13C, uncertainty C31 δ13C unc δ13C http://en.wikipedia.org/wiki/List_of_elements_by_stability_of_isotopes Obreht Igor obrehtigor@gmail.com 0000-0001-9710-8365 C31 δ13C unc CurationLevelC Enhanced curation https://wiki.pangaea.de/wiki/Curation_levels citable Arabian Sea hydroclimate Indus basin Leaf wax Monsoon n-alkanes Stable isotopes Vegetation change δ13C δD paleoclimate author11103 author117202 author117203 author22432 author23309 author25410 author26232 author26234 author42068 author55180 author55299 author554 author80286 award4957 basis4 campaign24709 campaign3392191 curlevel30 event2058107 funder20472 geocode1 geocode1599 geocode1600 geocode1601 geocode8128 inst10219 inst20077 inst20269 inst21098 inst21413 inst21485 inst21918 inst22739 inst277 license21 method11208 method16175 param151374 param27738 param539221 param539224 param96392 pi55299 term1073089 term1073131 term1073135 term207 term38263 term41056 term43863 term44230 term47569 term47679 term47957 term49856 term51409 term52650 term60519 term672 term67811 term77496 term77550 term77619