Ting Zhang-2026-GCA-Time-structured early diagenesis shapes sediment organic matter transformation and stabilization in a tropical lake

Dataset associated with the manuscript:

Time-structured early diagenesis shapes sediment organic matter transformation and stabilization in a tropical lake

This dataset contains the data supporting the results of the above manuscript submitted to Geochimica et Cosmochimica Acta. The data were obtained from sediment core LZ-C1 collected from Lake Izabal and were used to establish the chronological framework and to characterize bulk geochemical composition, elemental composition, and temperature-resolved molecular transformation of sedimentary organic matter during early diagenesis.

The dataset includes:

Table S1. Modeled ages and associated 95% credible intervals for core LZ-C1 derived from the Bayesian 210Pb age–depth model.

Table S2. Chronology, bulk geochemical, isotopic, and physical properties of core LZ-C1.

Table S3. Major element concentrations (mg g−1) and derived elemental indices for core LZ-C1.

Table S4. Stepwise Py–GC–MS results for core LZ-C1.

These data provide the basis for reconstructing time-structured early diagenesis and molecular-level transformation of organic matter in tropical lacustrine sediments.

Corresponding author:
Ting Zhang
Northwest Institute of Eco-Environment and Resources CAS, Lanzhou, China