ABSTRACT:

Dataset required to replicate analysis in the manuscript "In-situ observations of organic carbon oxidation in shale regolith and implications for bedrock weathering". Here we provide:
1) CO2 concentrations from incubation experiments using bulk material collected during VMS installation `all_sample_incubation.csv`
2) CO2 concentrations from incubation experiments using rock chips collected during VMS installation `rock_chip_incubation.csv`
3) bulk density measurements from rock chips collected during VMS installation `bulk_density_vms.xlsx`
4) mineral and tau data from Gu et al. 2020 `ERCZO_miner_published_edit.xlsx`
5) elemental oxide analysis from VMS materials collected during installation produced by Bureau Veritas `mineral_database_vms_oxides.xlsx`
6) elemental weight percents of VMS materials collected during installation derived from the elemental oxide data `mineral_database_vms.xlsx`
7) CO2(g), O2(g), 13CO2, and 14CO2 concentrations from VMS gas samples `new_radio_gas.xlsx`
8) C, 13C, and 14C concentrations of material collected during VMS installation `new_radio_solid.xlsx`
9) water content measurements from Schmidt et al 2020 and calculated gas diffusivity coefficients `water_content_schmidt2020.xlsx`

Please see the github repository at https://github.com/alisontune/OCox_shale_weathering for the code used to analyze these datasets.

ABSTRACT:

Dataset required to replicate analysis in the manuscript "Carbon Dioxide Production in Bedrock beneath Soils Substantially Contributes to Forest Carbon Cycling". Here we provide (1) subsurface carbon dioxide and oxygen concentrations for the study duration collected from a bedrock vadose zone, (2) subsurface temperature for the dates of sampling, (3) relative rock moisture for the dates of analysis, (4) calculated diffusion coefficients used to calculate carbon dioxide flux from the weathered bedrock and (4) soil efflux measurements. Measurements are made at discrete intervals throughout a bedrock vadose zone using a Vadose Zone monitoring System (VMS). The bedrock of the study site is a marine turbidite that is part of the Coastal Belt of the Franciscan Complex. The study site is characterized by a steep hillslope, a Mediterranean climate that is seasonally dry, and a mixed canopy forest.