We determined concentrations of carbonate in sediments from Hole 1137A on ~1 sample per core (Table T19). In addition, we analyzed nine of the sediment samples for organic carbon, total nitrogen, sulfur, and hydrogen. The results of the analyses are discussed in "Lithostratigraphy".
For volcanic rocks that were analyzed by XRF, we determined total carbon, total nitrogen, sulfur, and hydrogen using the NCS analyzer (Table T20). These data are useful for assessing the degree of alteration (e.g., total carbon and hydrogen can be converted to CO2 and H2O, respectively, and compared with loss on ignition values). Further discussion of these data can be found in "Igneous Petrology" and "Alteration and Weathering".