Holocene organic geochemical data from Borreguil de la Caldera (S Spain)

This dataset includes both bulk sediment organic data and biomarker data: total organic carbon (TOC), total nitrogen (TN), total hydrogen (TH), atomic hydrogen ? carbon ratio (H/C), atomic carbon - nitrogen ratio (C/N), carbon isotopic composition (13C), and nitrogen isotopic composition (15N) (measured by means of isotope-ratio mass spectrometry with a coupled elemental analyser, IRMS-EA), as well as n-alkane concentrations (from C18 to C37), including the total n-alkane concentration, the average change length (ACL), the portion aquatic (Paq), and the carbon preference index (CPI) (measured using gas chromatography with flame-ionization detection - GC-FID).本数据集包含全沉积物有机质数据与生物标志物数据两类：总有机碳（Total Organic Carbon，缩写为TOC）、总氮（Total Nitrogen，缩写为TN）、总氢（Total Hydrogen，缩写为TH）、氢碳原子比（H/C）、碳氮原子比（C/N）、碳同位素组成（¹³C）以及氮同位素组成（¹⁵N），上述指标均通过元素分析仪-同位素比值质谱联用法（IRMS-EA）测定；此外涵盖碳数范围为C18至C37的正构烷烃浓度数据，具体包括总正构烷烃浓度、平均链长（Average Chain Length，缩写为ACL）、水生源占比（Paq）以及碳优势指数（CPI），该类指标采用气相色谱-火焰离子化检测法（GC-FID）测定。