Publication Date:
2024-04-27
Description:
Sediments and rocks recovered in CRP-2/2A coring operations contain relatively little organic matter (average TOC=0.28%) and very small amounts of solvent-soluble organic matter. Because Early Oligocene sediment included significant amounts of coal detritus, TOC values are higher in Early Oligocene rocks than in younger rocks. TOC values are highest in the fine-grained rocks deposited as part of the highstand systems tract (HST) and TOC values decrease from the bottom to the top of the HST. The TOC:TN ratios observed in the CRP-2/2A core typically exceed 10, and are strong evidence that the preserved organic matter comprises a mixture of detrital coal and aquatic organic matter. Solvent-soluble organic matter comprises autochthonous bitumen derived from aquatic organic matter, allochthonous bitumen derived from deeper sedimentary rocks, and recycled bitumen derived from coal detritus.
Keywords:
14.2 km at 096° true from Cape Roberts; Cape Roberts Project; Carbon, organic, total; Carbon, organic, total, standard deviation; Carbon, total; Carbon, total, standard deviation; Core wireline system; CRP; CRP-2; CRP-2A; CWS; Depth, bottom/max; DEPTH, sediment/rock; Depth, top/min; Element analyser CNS, Carlo Erba NA1500; Nitrogen, standard deviation; Nitrogen, total; off Cape Roberts, Ross Sea, Antarctica; Sampling/drilling from ice
Type:
Dataset
Format:
text/tab-separated-values, 700 data points
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