| _version_ | 1867167681349681152 |
|---|---|
| author | Giesche, Alena Hodell, David A Petrie, Cameron A Haug, Gerald H Adkins, Jess F Plessen, Birgit Marwan, Norbert Bradbury, Harold J Hartland, Adam French, Amanda D Breitenbach, Sebastian F M |
| author_facet | Giesche, Alena Hodell, David A Petrie, Cameron A Haug, Gerald H Adkins, Jess F Plessen, Birgit Marwan, Norbert Bradbury, Harold J Hartland, Adam French, Amanda D Breitenbach, Sebastian F M |
| collection | Datos científicos de ciencias marinas y ambientales |
| contents | 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). |
| format | Dataset Open Access |
| id | pangaea_https___doi_org_10_1594_PANGAEA_956928 |
| institution | PANGAEA |
| language | en |
| publishDate | 2023 |
| publisher | PANGAEA |
| record_format | pangaea |
| spellingShingle | Dharamjali speleothem trace elements and stable isotopes Giesche, Alena Hodell, David A Petrie, Cameron A Haug, Gerald H Adkins, Jess F Plessen, Birgit Marwan, Norbert Bradbury, Harold J Hartland, Adam French, Amanda D Breitenbach, Sebastian F M 4.2 ka event; central Himalaya; DHAR-1A; Late Holocene; Monsoon; Speleothem sample; SPS; stalagmite 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). |
| title | Dharamjali speleothem trace elements and stable isotopes |
| topic | 4.2 ka event; central Himalaya; DHAR-1A; Late Holocene; Monsoon; Speleothem sample; SPS; stalagmite |
| url | https://doi.org/10.1594/PANGAEA.956928 |