Gray value determination from sediment core of Lake Alchichica in Mexico

Dataset

DOI

The grey values 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. The core structure was revealed by a Siemens Somatom Definition +128 CT-scanner at the INRS Centre Eau Terre Environnement with a 0.31 mm resolution in the stratigraphic direction. Grey levels are expressed in Hounsfield units (HU): light (dark) grey levels represent dense (light) sediments. The analysis was performed at the INRS Centre Eau Terre Environnement in Canada.

Identifier
DOI	https://doi.pangaea.de/10.1594/PANGAEA.982951
Related Identifier	IsSupplementTo https://doi.org/10.1016/j.quascirev.2025.109618
Metadata Access	https://ws.pangaea.de/oai/provider?verb=GetRecord&metadataPrefix=datacite4&identifier=oai:pangaea.de:doi:10.1594/PANGAEA.982951

Provenance
Creator	Safaierad, Reza ; Israde-Alcántara, Isabel; Rantala, Marttiina V ; Domínguez-Vázquez, Gabriela; Schefuß, Enno (ORCID: 0000-0002-5960-930X); Tylmann, Wojciech ; Francus, Pierre ; Mattielli, Nadine ; Metcalfe, Sarah; Fagel, Nathalie
Publisher	PANGAEA
Publication Year	2026
Funding Reference	Fonds de la Recherche Scientifique https://doi.org/10.13039/501100002661 Crossref Funder ID PDR T.0079.21 Holocene Mexican Crater Lakes and Climate (HolMeCl)
Rights	Creative Commons Attribution 4.0 International; https://creativecommons.org/licenses/by/4.0/
OpenAccess	true

Representation
Resource Type	Dataset
Format	text/tab-separated-values
Size	1848 data points
Discipline	Earth System Research
Spatial Coverage	(-97.439 LON, 19.506 LAT)