Jan Veizer, Jean Lemieux, Brian Jones, Martin R. Gibling, Jim Savelle; Sodium: Paleosalinity indicator in ancient carbonate rocks. Geology ; 5 (3): 177–179. doi: https://doi.org/10.1130/0091-7613(1977)5<177:SPIIAC>2.0.CO;2
Download citation file:
The hypersaline facies of the lower Paleozoic carbonate sequence of Arctic Canada contain ≳230 ppm of soluble Na, whereas their open-marine counterparts are characterized by concentrations below this value. This chemical difference, imposed by sedimentary and (or) diagenetic environments, is preserved in spite of the order of magnitude postdepositional redistribution of sodium.