Abstract
A sedimentological and facies sequence study, coupled with geochemical analyses (Sr, Mg, Fe, Mn and δ 18O) was made on a core (Ravières, Yonne; south-east Paris Basin, France) in the Bajocian-Bathonian carbonate-shelf sedimentary succession. By studying the strontium variations, geochemical cycles can be correlated to transgressive-regressive sedimentary cycles. However, the interpretation of the geochemical cycles must refer to a different standard than the studies generally realised in basin environments.
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