Safaierad, Reza; Israde-Alcántara, Isabel; Rantala, Marttiina V; Domínguez-Vázquez, Gabriela; Schefuß, Enno; Tylmann, Wojciech; Francus, Pierre; Mattielli, Nadine; Metcalfe, Sarah; Fagel, Nathalie: Mineral composition from sediment core of Lake Alchichica in Mexico [dataset]. PANGAEA, https://doi.pangaea.de/10.1594/PANGAEA.982936 (dataset in review)
Abstract:
The mineralogical data were measured from a 57-cm-long sediment core retrieved from Lake Alchichica (19° 24' 38 N, 97° 24' 14 W, 2322 masl) at a water depth of ~ 60 m using a Uwitec® coring device equipped with a 9-cm coring tube. Forty freeze-dried ground samples weighing ~0.5 g were sieved through a 150 µm mesh and transferred to a plastic holder using the backside method and scanned from 2 to 70◦ 2θ with a step size of 0.009◦2θ and 0.5 s per step. The analysis was performed using a Bruker® D8-Advance Eco diffractometer (CuKα radiation, λ = 1.5418 Å, 40 kV, 25 mA) coupled with a Lynxeye XE detector (AGEs Laboratory, University of Liège). Mineral identification and quantification were done using the EVA (v4.3) and TOPAS (v5.0) ® Bruker software, respectively. A Rietveld refinement was applied to all the minerals identified by XRD. Unit cell parameters and preferred orientations of the mineral phases were adjusted to obtain a reconstructed XRD pattern as close to the measured pattern.
Keyword(s):
Supplement to:
Safaierad, Reza (accepted): Late Holocene hydroclimate variability and human-environment interactions in the Cuenca Oriental, Mexico: multiproxy evidence from Lake Alchichica. Quaternary Science Reviews
Funding:
Fonds de la Recherche Scientifique (FNRS), grant/award no. PDR T.0079.21: Holocene Mexican Crater Lakes and Climate (HolMeCl)
Coverage:
Latitude: 19.505600 * Longitude: -97.438900
Minimum DEPTH, sediment/rock: 0.005 m * Maximum DEPTH, sediment/rock: 0.565 m
Event(s):
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 | Age, Bayesian based model Plum on Pb-210 and C-14 data | Geocode |
| 3 | Aragonite | Arg | % | Safaierad, Reza | X-ray diffractometer (XRD) Bruker, EVA (v4.3) and TOPAS (v5.0) | |
| 4 | Calcite | Cal | % | Safaierad, Reza | X-ray diffractometer (XRD) Bruker, EVA (v4.3) and TOPAS (v5.0) | |
| 5 | Hydromagnesite | Hydromgs | % | Safaierad, Reza | X-ray diffractometer (XRD) Bruker, EVA (v4.3) and TOPAS (v5.0) | |
| 6 | Dolomite | Dol | % | Safaierad, Reza | X-ray diffractometer (XRD) Bruker, EVA (v4.3) and TOPAS (v5.0) | |
| 7 | Quartz | Qz | % | Safaierad, Reza | X-ray diffractometer (XRD) Bruker, EVA (v4.3) and TOPAS (v5.0) | |
| 8 | Orthoclase | Or | % | Safaierad, Reza | X-ray diffractometer (XRD) Bruker, EVA (v4.3) and TOPAS (v5.0) | |
| 9 | Anorthite | An | % | Safaierad, Reza | X-ray diffractometer (XRD) Bruker, EVA (v4.3) and TOPAS (v5.0) | |
| 10 | Minerals, other | Min other | % | Safaierad, Reza | X-ray diffractometer (XRD) Bruker, EVA (v4.3) and TOPAS (v5.0) |
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:
224 data points