DOI: 10.5281/zenodo.18466187
title: Supplementary tables - Astronomical calibration of the middle Cambrian in Baltica: Global carbon cycle synchronization and climate dynamics

description: Table S1 – XRF_ICPMS_Zscore.This table contains all XRF core scanner data, ICP-MS data, Z-score–normalized datasets, and the detailed core correlation based on GR–resistivity data. The file includes 14 Excel worksheets, described below.

Worksheet 1 contains the Z-score dataset used in this study.

Worksheet 2 contains the raw XRF data for detrital elements (Al, Si, Ti, K, Zr) and Ca prior to Z-score normalization for the studied core interval from 200 to 232.615 m. The interval from 200 to 212.4 m corresponds to data from Zhao et al. (2022; reference no. 16 in the main text). These data were adjusted by reducing the thickness of diagenetic limestone intervals (anthraconite) to 20% of their original thickness. This dataset was used to perform Z-score normalization in this study.

Worksheet 3 contains the same raw XRF data as Worksheet 2 (200–232.615 m), including data from Zhao et al. (2022) between 200 and 212.4 m, but without adjustment. Diagenetic limestone intervals (anthraconite) retain 100% of their original thickness.

Worksheet 4 corresponds to supplementary data from Zhao et al. (2022; reference no. 16 in the main text) reused in this study to construct a composite core covering the entire Miaolingian Epoch.

Worksheet 5 contains raw XRF data for all measured elements from the portion of the core analyzed in this study, ranging from 210.178 to 237.4 m. These data are unadjusted, with diagenetic limestone intervals preserved at 100% of their original thickness.

Worksheet 6 contains the same raw XRF dataset as Worksheet 5, but adjusted by reducing the thickness of diagenetic limestone intervals (anthraconite) to 20% of their original thickness.

Worksheet 7 contains the correlation between gamma-ray and resistivity data compared with the XRF data presented in Zhao et al. (2022; reference no. 16 in the main text) and in this study.

Worksheet 8 contains all ICP-MS data generated in this study.

Worksheets 9–14 contain the Z-score normalization functions applied to the detrital elements (Al, Ti, Si, K, Zr) and Ca.

 


 



Table S2 – Geoch_Corg_Bio_XRD.This table contains all geochemical, carbon isotope, XRD, and biostratigraphic data used in this study. The file includes four Excel worksheets, described below.

Worksheet 1 contains all carbon isotope data used in this study, including data from Zhao et al. (2022; reference no. 16 in the main text) and data generated in this study.

Worksheet 2 contains all Rock-Eval data generated in this study.

Worksheet 3 contains all biostratigraphic information used in this study, including data from Zhao et al. (2022; reference no. 31 in the main text), Lauridsen (2000; reference no. 37 in the main text), and data collected in this study.

Worksheet 4 contains all XRD data generated in this study.

 


 



Table S3 – DICE_localities.This table contains a paleogeographic reconstruction of the studied time interval and the 135 localities (with associated references) that record the Wuliuan–Drumian interval. Modified from Jamart et al. (2025; reference no. 4 in the main text). The file includes two Excel worksheets, described below.

Worksheet 1 contains the paleogeographic map and all localities covering the Wuliuan–Drumian (DICE-equivalent) interval.

Worksheet 2 contains the full references associated with the presented localities.

 


 

Table S4 – ATS_Filters_MTM.This table contains the Astronomical Time Scale (ATS), filters in the depth and time domains, lag-1 data, 2π multitaper method (MTM) results in both depth and time domains, frequency ratios, aeolian dust ratios in the time domain, and astronomical target calculations. The file includes nine Excel worksheets, described below.

Worksheet 1 contains the astronomical time scale constructed in this study and anchored to the data of Zhao et al. (2022; reference no. 16 in the main text). This composite astronomical time scale covers the entire Miaolingian Epoch in Baltica.

Worksheet 2 contains the astronomical time scale at 1 kyr resolution, including filters for Milankovitch cycles.

Worksheet 3 contains the astronomical time scale at 5 kyr resolution, including Milankovitch-cycle filters and lag-1 data.

Worksheet 4 contains MTM results in the stratigraphic (depth) domain generated for the lower part of the Albjära-1 core (this study).

Worksheet 5 contains MTM results in the chronostratigraphic (time) domain generated for the lower part of the Albjära-1 core (this study).

Worksheet 6 contains the frequency ratios used in this study.

Worksheet 7 contains the aeolian dust ratios used in this study.

Worksheet 8 contains recalculated astronomical targets for the durations of Milankovitch cycles for the 497–505 Ma time interval.

Worksheet 9 contains filters of probable Milankovitch cycles in the stratigraphic (depth) domain at 1 mm resolution.