Oxygen Isotope Values of Cellulose from Nanning, China

DOI

Estimates of monsoon intensity in southern China during the Oligocene are limited. Here we report new estimates of wet season rainfall based on stable oxygen isotope measurements of cellulose extracted from living Pinus massoniana trees from Qingxiushan Hill, Nanning (22°47'23.35” N, 108°23'4.26” E, elevation = 223 m) and fossil Castanopsis wood from the upper Yongning Formation near Nanning in the Guangxi Zhuang Autonomous Region of South China (22°52'50'' N, 108°25'2'' E). The modern data span 11 years (1990-2000) from two radial tree cores (QXS21A and QXS24A) for calibration with modern climatological data; 64 mummified wood samples dated to the late Oligocene were selected for cellulose extraction, but only 43 had recoverable cellulose. Cellulose was extracted following the modified Brendel method and oxygen isotope values were determined using a High–Temperature–Conversion Elemental Analyzer coupled with a Delta–V Advantage Mass Spectrometer. Values are reported in units of per mil (‰) relative to the VSMOW standard, with an analytical uncertainty of ± 0.3‰ and ± 0.1‰ for the fossil and modern samples, respectively.

Identifier
DOI https://doi.org/10.1594/PANGAEA.930777
Related Identifier References https://doi.org/10.1016/j.palaeo.2021.110556
Metadata Access https://ws.pangaea.de/oai/provider?verb=GetRecord&metadataPrefix=datacite4&identifier=oai:pangaea.de:doi:10.1594/PANGAEA.930777
Provenance
Creator Schubert, Brian A; Ren, Junbo; Lukens, William E ORCID logo; Quan, Cheng
Publisher PANGAEA
Publication Year 2021
Rights Creative Commons Attribution 4.0 International; https://creativecommons.org/licenses/by/4.0/
OpenAccess true
Representation
Resource Type Dataset
Format application/vnd.openxmlformats-officedocument.spreadsheetml.sheet
Size 13.7 kBytes
Discipline Earth System Research
Spatial Coverage (108.417 LON, 22.881 LAT); China