Supplement to: Malone, Mitchell J; Claypool, George E; Martin, Jonathan B; Dickens, Gerald Roy (2002): Variable methane fluxes in shallow marine systems over geologic time. The composition and origin of pore waters and authigenic carbonates on the New Jersey shelf. Marine Geology, 189(3-4), 175-196, https://doi.org/10.1016/S0025-3227(02)00474-7