Bulk organic proxies, geochemistry, and pollen data from core E87-32B, middle Bengal Fan (~37 kyr)

Core E87-32B spans a sediment record of approximately 37 kyr, covering MIS 3 to MIS 1, retrieved from the middle Bengal Fan in the Bay of Bengal. This dataset includes four data types. First, geochemical and physical property data (4 cm resolution) comprising total organic carbon (TOC, %), total nitrogen (TN, %), stable carbon and nitrogen isotopes (δ13C and δ15N, ‰), TOC/TN molar ratio, dry bulk density (g cm-3), bulk mass accumulation rate (g cm-2 ka-1), TOC mass accumulation rate (mg cm-2 ka-1), titanium dioxide (TiO2, %), biogenic barium (Babio, mg/kg), and thorium/uranium ratio (Th/U). Second, Monte Carlo three-end-member mixing model outputs (median, minimum, and maximum fractional contributions) for marine organic matter (Fmar), terrestrial C3-derived organic matter (FC3), and terrestrial C4-derived organic matter (FC4). Third, pollen and spore data (2 and 4 cm resolution), including absolute pollen concentration (grains/g), relative abundances of conifer, broadleaved, herbaceous, mangrove, fern spore, freshwater algae, and fungal taxa, as well as grouped C3 and C4 (or mixed) pollen concentrations. Fourth, sliding Pearson correlation coefficients (5-point moving window, ~0.5–1 ka resolution) between TOC and pollen proxies, between TOC and inorganic proxies (TiO2, Babio, Th/U), and between δ13C and pollen proxies.

E87-32B岩芯（Core E87-32B）采集自孟加拉湾中部的孟加拉扇，其沉积记录时长约37千年，覆盖深海氧同位素3期（Marine Isotope Stage 3, MIS 3）至深海氧同位素1期（Marine Isotope Stage 1, MIS 1）。
本数据集包含四类数据：
第一类为地球化学与物理性质数据（分辨率4 cm），涵盖总有机碳（total organic carbon, TOC，%）、总氮（total nitrogen, TN，%）、稳定碳氮同位素（δ¹³C与δ¹⁵N，‰）、总有机碳/总氮摩尔比、干容重（dry bulk density，g·cm⁻³）、块体质量堆积速率（bulk mass accumulation rate，g·cm⁻²·ka⁻¹）、总有机碳质量堆积速率（TOC mass accumulation rate，mg·cm⁻²·ka⁻¹）、二氧化钛（titanium dioxide, TiO₂，%）、生物成因钡（biogenic barium, Babio，mg/kg）以及钍铀比（thorium/uranium ratio, Th/U）。
第二类为蒙特卡洛三端元混合模型输出结果，包含海洋有机质（Fmar）、陆源C3源有机质（FC3）与陆源C4源有机质（FC4）的分数贡献量的中位数、最小值与最大值。
第三类为孢粉与孢子数据（分辨率分别为2 cm与4 cm），包括绝对孢粉浓度（grains/g，粒/克）、针叶树、阔叶树、草本、红树林、蕨类孢子、淡水藻类及真菌类群的相对丰度，以及分组后的C3与C4（或混合）孢粉浓度。
第四类为滑动皮尔逊相关系数（采用5点移动窗口，分辨率约0.5–1 ka），分别涵盖总有机碳与孢粉代用指标间、总有机碳与无机代用指标（二氧化钛、生物成因钡、钍铀比）间，以及δ¹³C与孢粉代用指标间的相关系数。