Safaierad, Reza; Schefuß, Enno; Zolitschka, Bernd; Vogt, Christoph; Hahn, Annette; Yokoyama, Yusuke; Mohtadi, Mahyar: Carbon isotope (δ13C) measured from leaf-wax n-alkanes in sediment core Sardarya from southeast Iran [dataset]. PANGAEA, https://doi.pangaea.de/10.1594/PANGAEA.965844 (dataset in review)
Abstract:
The proxy data reported here are measured from a sediment core collected from Lake Sardarya (28° 38' 03" N, 61° 00' 44" E, 2675 m a.s.l.) situated on the western slope of Taftan volcano, southeastern Iran. The core is 550 cm long and was collected in May 2017. Leaf-wax n-alkanes were extracted using a DIONEX Accelerated Solvent Extractor (Dionex ASE-200). Neutral compounds such as hydrocarbons, ketones and alcohols were extracted after saponification. Non-polar hydrocarbons were separated from the natural fractions and analyzed using a Gas Chromatography/Flame Ionization Detector (GC/FID) at MARUM, University of Bremen. Individual n-alkanes were identified by comparison of retention times with an external standard. Stable carbon isotope (δ13C) analyses of n-alkanes were conducted on a Finnigan MAT 252 Isotope Ratio Mass Spectrometer coupled via a GC/C interface with a combustion reactor operated at 1000°C to a Thermo Fisher Scientific TRACE GC equipped with a HP-5ms column (30 m, 0.25 mm, 1 µm). Each sample was measured at least in duplicate.
Supplement to:
Safaierad, Reza; Schefuß, Enno; Zolitschka, Bernd; Noorollahi, Dariush; Yokoyama, Yusuke; Vogt, Christoph; Hahn, Annette; Mohtadi, Mahyar (in review): Anthropogenic warming is a greater threat to West Asian water resources than the naturally induced Little Ice Age cooling. Science Advances
Related code / software:
Blaauw, Maarten; Christen, Andrés; Aquino-Lopez, Marco A; Esquivel-Vazquez, Judith; Gonzalez V, Oscar M; Belding, Ted; Theiler, James; Gough, Brian; Karney, Charles (2021): Package rbacon. CRAN, https://CRAN.R-project.org/package=rbacon (Using command BC/AD = TRUE)
Coverage:
Latitude: 28.634167 * Longitude: 61.012222
Minimum DEPTH, sediment/rock: 0.01 m * Maximum DEPTH, sediment/rock: 5.46 m
Event(s):
Comment:
Carbon isotope (δ13C) measured from leaf-wax n-alkanes: 12 samples, analysed at MARUM- University of Bremen (16.10.2017)
Parameter(s):
| # | Name | Short Name | Unit | Principal Investigator | Method/Device | Comment |
|---|---|---|---|---|---|---|
| 1 | DEPTH, sediment/rock | Depth sed | m | Safaierad, Reza | Geocode | |
| 2 | AGE | Age | ka BP | Safaierad, Reza | Geocode | |
| 3 | Age | Age | a AD/CE | Safaierad, Reza | Age model, Bacon (Blaauw & Christen, 2011) | |
| 4 | n-Alkane C29, δ13C | C29 δ13C | ‰ PDB | Safaierad, Reza | Thermo Trace GC - Finnigan MAT 252 (GC/IR-MS) | |
| 5 | n-Alkane C29, δ13C, standard error | C29 δ13C std e | ± | Safaierad, Reza |
License:
Creative Commons Attribution 4.0 International (CC-BY-4.0) (License comes into effect after moratorium ends)
Status:
Curation Level: Enhanced curation (CurationLevelC)
Size:
36 data points