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Dharamjali speleothem trace elements and stable isotopes

Urheber*innen

Giesche,  Alena
External Organizations;

Hodell,  David A.
External Organizations;

Petrie,  Cameron A.
External Organizations;

Haug,  Gerald H.
External Organizations;

Adkins,  Jess F.
External Organizations;

/persons/resource/birgit

Schröder [Plessen],  Birgit
4.3 Climate Dynamics and Landscape Evolution, 4.0 Geosystems, Departments, GFZ Publication Database, Deutsches GeoForschungsZentrum;

Marwan,  Norbert
External Organizations;

Bradbury,  Harold J.
External Organizations;

Hartland,  Adam
External Organizations;

French,  Amanda D.
External Organizations;

Breitenbach,  Sebastian F. M.
External Organizations;

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Zitation

Giesche, A., Hodell, D. A., Petrie, C. A., Haug, G. H., Adkins, J. F., Schröder [Plessen], B., Marwan, N., Bradbury, H. J., Hartland, A., French, A. D., Breitenbach, S. F. M. (2023): Dharamjali speleothem trace elements and stable isotopes.
https://doi.org/10.1594/PANGAEA.956928


Zitierlink: https://gfzpublic.gfz-potsdam.de/pubman/item/item_5023305
Zusammenfassung
A 25-cm long predominantly aragonite stalagmite was collected November 2, 2005 from Dharamjali Cave (29.5°N, 80.2°E) in the central Himalayas. This dataset contains stable isotope, trace element, XRF, U/Th dating, and dripwater data. The age model spans 4.2 to 2.3 ka BP, and the dataset records seasonal shifts in hydroclimate from 4.2 to 3.1 ka BP. Using the DHAR-1A half of the speleothem, 750 samples were milled at 100–300 µm resolution for stable isotope analysis (δ18O and δ13C) and analyzed at GFZ Potsdam. Further high-resolution stable isotope analysis at the University of Cambridge included 876 samples from the bottom 4 cm of the mirroring slab DHAR-1B, covering c. 4.2–3.6 ka BP. The δ44/40Ca measurements were made on 60 aragonite samples of aragonite and 1 calcite sample milled between 4.2 and 2.8 ka BP. The elemental composition of DHAR-1B was determined first with an Avaatech XRF scanner at the University of Cambridge, and later using laser ablation inductively-coupled plasma mass spectrometry (LA-ICP-MS) at the University of Waikato. U-series dating was performed at Caltech on 22 samples. Twelve U-series ages (between 2.55 and 4.14 ka BP) were used to construct the age models, using ensembles of 2000 Monte Carlo simulations for each proxy using the MATLAB-based COPRA script (Breitenbach et al., 2012, https://doi.org/10.5194/cp-8-1765-2012).