Bulk organic geochemistry (TOC, TN, d13C, d15N) of 3 vertical profiles from Holocene volcanic ash soils in Chilean Patagonia@en

This dataset presents bulk organic geochemical data (TOC, TN, d13C, d15N) obtained by EA-IRMS analysis on 108 samples from 3 vertical profiles from Holocene volcanic ash soils in Chilean Patagonia (44-48°S). The samples were collected in 2012 and 2013 at a vertical resolution of 5-10 cm. The samples were collected with a metal trowel, after cleaning the vertical profile with a shovel. They were dry-sieved <90 µm before analysis. The mineralogical and inorganic geochemical composition of the same samples was published in Vandekerkhove et al. (2016) and are available on Earthchem (doi:10.1594/IEDA/100526).本数据集涵盖通过元素分析仪-稳定同位素比率质谱（Element Analyzer-Isotope Ratio Mass Spectrometry, EA-IRMS）分析获得的全量有机地球化学数据，包含总有机碳（Total Organic Carbon, TOC）、总氮（Total Nitrogen, TN）、碳同位素比值（d13C）及氮同位素比值（d15N）。所用108份样本采自智利巴塔哥尼亚（南纬44°-48°）的3个全新世火山灰土壤垂直剖面，采样工作于2012年与2013年完成，采样垂直分辨率为5至10厘米。采样流程为：先用铲子清理垂直剖面表面，再以金属抹子采集样本。分析前，所有样本均经干筛处理至粒径小于90微米。同批次样本的矿物学与无机地球化学组成已发表于Vandekerkhove等人（2016）的研究，相关数据可在Earthchem平台获取（doi:10.1594/IEDA/100526）。