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Low-resolution Paleogene bulk sediment stable oxygen and carbon isotope data from IODP Expedition 369, Sites U1514 and U1516 in the SE Indian Ocean.
The data consist of several spreadsheets detailing the temporal and geographical distributions of testudinates (turtles, terrapins and tortoises) through time. Occurrence data includes information on taxonomy, geographical distribution and geological age and is limited to Mesozoic-Paleogene taxa. These data were compiled from the published literature on fossil turtles for NERC Standard Grant NE/J020613/1. These data form the basis for understanding the role of changing global climates and geography on testudinate diversity and distribution though time, with the aim of providing historical baseline data for modern conservation biology. The data represent a summary over 150 years of published research on fossil turtles and their relatives and were compiled over a period of 3.5 years during the tenure of a grant. To date they have provided the data used in analyses presented by Nicholson et al. (2015, 2016) and Waterson et al. (2016). Details of the analyses and the results obtained can be found in these papers.
Supplemental files (plotting scripts, tables) in support of Greene et al., 2019. Early Cenozoic Decoupling of Climate and Carbonate Compensation Depth Trends. PP2019.Greeneetal.SupplementaryTables.xlsx Tables S1-S3. Raw data for CCD time-slice reconstruction for NP8, NP10-11, and NP12-13, respectively. Raw data for each CCD time-slice reconstruction (program, site number, current and paleo- latitude/longitude, underlying basement age, current water depth, sediment cover, reconstructed paleodepth (see Methods), wt% CaCO3 mean, and individual wt% CaCO3 measurements. Tables S4-S18. Model output: time series of pCO2 and Ca2+ weathering flux for each ensemble #1 experiment. Tables S19-S22. Final year model output for each experiment in each ensembles 1-4. Final year model output for each experiment ensembles 1-4 (outgassing rate modification factor relative to x3 pre-industrial pCO2, pCO2, mean ocean [DIC], mean ocean [ALK], POC export, Ca2+ weathering flux, mean ocean temperature, mean land surface air temperature, overturning stream function min/max, and final year CSH and CCD (following Goodwin and Ridgwell ). For ensembles 2-4 bolded columns indicate model variables roughly fixed across all experiments within the ensemble. PP2019_Greeneetal_Subsidence.m Matlab script for calculating paleodepth from current water depth and seafloor age. This script plots a subsidence curve for a single location and displays the paleodepth for that location at a user-specified point in the past using the subsidence equations from Cramer et al., 2009 'Ocean overturning since the Late Cretaceous: Inferences from a new benthic foraminiferal isotope compliation', Paleoceanography 24(4), PA4216 with a simplified sediment unloading term. PP2019_Greeneetal_plot_CCDcontour.m Matlab script for contouring depth/wt% carbonate data into contoured CCD snapshot. In support of Published Paper: Greene, S.E., Ridgwell, A., Kirtland Turner, S., Schmidt, D.N., Pälike, H., Thomas, E., Greene, L.K. and Hoogakker, B.A.A. (2019), Early Cenozoic Decoupling of Climate and Carbonate Compensation Depth Trends. Paleoceanography and Paleoclimatology, 34: 930-945. https://doi.org/10.1029/2019PA003601
Neodymium (Nd) isotope data measured from fossil fish debris and sediment leaches collected from IODP Sites U1512, U1513, U1514 and U1516.