Earthquake-triggered submarine canyon flushing transfers young terrestrial and marine organic carbon into the deep sea

Files included are supplementary information for the journal publication by the same name in review with EPSL, 2024/2025.

Core data and particle size data are presented as Supplementary Data Tables 1 and 2, respectively.  

Stable carbon and nitrogen isotope and %C and %N data from NIWA, Wellington NZ are presented as a Supplementary Data Table 3. 

RPO-Radiocarbon data is presented in Supplementary Table 4 from Rafter Radiocarbon Lab, GNS Science, Wellington, NZ. It contains blank corrected Fm and Conventional Radiocarbon Age (CRA) results for each temperature split. Weighted bulk radiocarbon dates have been calculated by mass balance of all splits. One bulk radiocarbon date for sample HIK21 is also presented and agrees with the RPO calculated weighted bulk radiocarbon measurement. 

Supplementary Figure 1 presents A.) Ramped Pyrolysis Oxidation (RPO) thermographs as a jpeg figure of normalised CO2 concentration as a function of evolved temperature of pyrolysis for all 7 RPO samples. B.) A single thermograph is also presented showing where splits are taken at inflection points in the thermograph.

Supplementary Table 5 summarises Pyrolysis-Gas Chromatography-Mass Spectrometry (Py-GC-MS) data from the Organic Geochemistry Lab, GNS Science, Wellington, NZ for all 7 samples including bulk and temperature split results. Breakdown of the 9 compound group percentages are included, as well as categorised percentages of marine and terrestrial indicators.

Supplementary Figure 2 shows a jpeg example Py-GC-MS chromatogram with compounds from the 9 compound groups indicated on the chromatogram.