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. 2021 Jan 5;21(1):103–114. doi: 10.1089/ast.2020.2286

FIG. 3.

FIG. 3.

Sulfur isotope compositions for sulfide from four hydrothermally altered core samples recovered by IODP-ICDP Expedition 364 in order of relative depth in the peak ring. Forty-one sulfide analyses were made in suevite within peak ring granitoid rocks (0077-297R-1-93-95, pink squares) and three overlying suevitic breccias (0077-63R-2-69.5-72, yellow squares; 0077-46R-1-46-52, green squares; 0077-40R-2-105-107, blue squares). Analytical uncertainty is smaller than the sizes of symbols. Expedition 364 sulfur isotopes in 22 samples of post-impact sediments (open squares) and their stratigraphic age are from Schaefer et al. (2020). For comparison, analyses of sulfate samples in bedrock of the northern Yucatán (Claypool et al., 1980; Koeberl 1993), in Chicxulub ejecta on the Yucatán (Koeberl 1993), and in two previous core samples (Y-6 and Yax-1) recovered from the crater (Strauss and Deutsch, 2003) are provided (gray squares). Sulfide isotope compositions (‰, V-CDT) of the pyrite framboids are extremely fractionated from those of target sulfate compositions.