core_id 
Gravity core identifier

unitless 
core_id 
dive_id 
Alvin submersible dive identifier

unitless 
dive_id 
dive_date 
Alvin submersible dive date in format yyyymmdd

unitless 
date 
dive_lat 
Alvin submersible dive latitude; north is positive

decimal degrees 
lat 
dive_lon 
Alvin submersible dive longitude; east is positive

decimal degrees 
lon 
top_depth 
Top of sample interval in core

centimeters 
depth_core 
bottom_depth 
Bottom of sample interval in core

centimeters 
depth_core 
depth 
Middle of sample interval in core

centimeters 
depth_core 
CaCO3 
Average concentration of calcium carbonate by weight

percent 
CaCO3 
CaCO3_stdev 
Standard deviation of the concentration of calcium carbonate by weight

percent 
CaCO3 
TIC 
Average concentration of total inorganic carbon by weight

percent 
DIC 
TIC_stdev 
Standard deviation of the concentration of total inorganic carbon by weight

percent 
DIC 
OC 
Average concentration of organic carbon (OC) by weight

percent 
C_org 
OC_stdev 
Standard deviation of the concentration of organic carbon (OC) by weight

percent 
C_org 
N 
Average concentration of nitrogen by weight

percent 
trace_element_conc 
N_stdev 
Standard deviation of the concentration of nitrogen by weight

percent 
trace_element_conc 
Fe_R 
Average refractory concentration of iron

percent 
trace_metal_conc 
Fe_R_stdev 
Standard deviation of the refractory concentration of iron

percent 
trace_metal_conc 
Cr_R 
Average refractory concentration of chromium

miligrams per gram (mg/g) 
trace_metal_conc 
Cr_R_stdev 
Standard deviation of the refractory concentration of chromium

miligrams per gram (mg/g) 
trace_metal_conc 
Cu_R 
Average refractory concentration of copper

miligrams per gram (mg/g) 
trace_metal_conc 
Cu_R_stdev 
Standard deviation of the refractory concentration of copper

miligrams per gram (mg/g) 
trace_metal_conc 
Mn_R 
Average refractory concentration of manganese

percent 
trace_metal_conc 
Mn_R_stdev 
Standard deviation of the refractory concentration of manganese

percent 
trace_metal_conc 
Zn_R 
Average refractory concentration of zinc

miligrams per gram (mg/g) 
trace_metal_conc 
Zn_R_stdev 
Standard deviation of the refractory concentration of zinc

miligrams per gram (mg/g) 
d13C 
d13C 
Ratio of stable isotopes 13C:12C; reference standard Vienna Pee Dee Belemnite (VPDB)

permil (0/00) 
d13C 
d13C_stdev 
Standard deviation of the ratio of stable isotopes 13C:12C; reference standard Vienna Pee Dee Belemnite (VPDB)

permil (0/00) 
d13C 