Data for: Chronology and eccentricity phasing for the Early Turonian greenhouse (~93-94 Ma): constraints on astronomical control of the carbon cycle. Paleoceanography and Paleoclimatology.
Description
Here we present geochemical and geophysical data obtained from four boreholes in the Bohemian Cretaceous Basin (central Europe). These data cover the Lower Turonian interval (~93 and 94 Myr ago) and were used to develop a refined chronology and interpret the phasing of orbital eccentricity in this interval. BCB-LTUR-Dataset 1: Carbon isotope ratios in bulk organic matter (d13Corg,‰ VPDB) and organic carbon contents (TOC, wt%), borehole 4523-A. Latitude: 50.540556 Longitude: 14.229444 Minimum depth: 9.92 m Maximum depth: 219.9 m Date: 1.3. – 30.3. 2016 BCB-LTUR-Dataset 2: Carbon isotope ratios in bulk organic matter (d13Corg, ‰ VPDB), borehole 4530-A Latitude: 50.355278 Longitude: 14.3625 Minimum depth: 18.25 m Maximum depth: 87.3 m Date: 15.9. 2017 – 19.7. 2018 BCB-LTUR-Dataset 3a: Downhole resistivity log (LL7 laterolog, ohmm), borehole J-719670 Latitude: 50.589722 Longitude: 14.232778 Minimum depth: 320 m Maximum depth: 535.5 m Date: 1.1. 1982 Additional information: Depth scale is provided in two versions: 1 = original depth scale; 2 = detrended depth scale after removal of linear trend in sedimentation rate BCB-LTUR-Dataset 3b: Downhole resistivity log (LL7 laterolog, ohmm), borehole J-650704 Latitude: 50.593333 Longitude: 14.283333 Minimum depth: 330 m Maximum depth: 530 m Date: 1.1. 1980 Additional information: Depth scale is provided in two versions: 1 = original depth scale; 2 = detrended depth scale after removal of linear trend in sedimentation rate BCB-LTUR-Dataset 4: Greyscale density (8-bit), borehole 4523-A Latitude: 50.540556 Longitude: 14.229444 Minimum depth: 130 m Maximum depth: 216 m Date: 10.3. 2020 - 22.4. 2020 BCB-LTUR-Dataset 5: Si/Al ratios in the bulk sediment (mol/mol), borehole Bch-1 Latitude: 50.315056 Longitude: 15.295008 Minimum depth: 340.05 m Maximum depth: 404.83 m Date: 31.7. 2018 – 7.2. 2019