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Journal of Palaeogeography
Fig. 6 | Journal of Palaeogeography

Fig. 6

From: First steps in reconstructing Early Jurassic sea water temperatures in the Andean Basin of northern Chile based on stable isotope analyses of oyster and brachiopod shells

Fig. 6

Results of the high-resolution stable isotope (δ13C, δ18O) analyses of three oysters with a late Toarcian age. While the data of specimen CH18-006 (a) shows evidence of diagenetic alteration, the values of CH18-017 (b) and CH18-030 (c) are assumed to reflect original conditions representing seasonal temperature fluctuations. In addition to the overall average for each dataset, a two-point running average is shown. Note the inverted scale for δ18O values

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