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87 Sr/ 86 Sr composition of evaporitic carbonates and sulphates from Miocene sediment cores in the Mediterranean Sea (D.S.D.P., Leg 13)
Author(s) -
CLAUER NORBERT
Publication year - 1976
Publication title -
sedimentology
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.494
H-Index - 108
eISSN - 1365-3091
pISSN - 0037-0746
DOI - 10.1111/j.1365-3091.1976.tb00043.x
Subject(s) - geology , strontium , sediment , isotopes of strontium , mediterranean climate , evaporite , geochemistry , mediterranean sea , oceanography , mineralogy , paleontology , sedimentary rock , chemistry , archaeology , history , organic chemistry
ABSTRACT The 87 Sr/ 86 Sr ratios of evaporitic carbonates and sulphates from Miocene sediment cored in the Mediterranean Sea show a depletion of 87 Sr when compared to the isotopic composition of the Miocene contemporaneous marine strontium: 0.70803 versus 0.70936. The arrival into the evaporitic environment of strontium brought by continental waters can explain this difference. The variation of the 87 Sr/ 86 Sr ratios is, nevertheless, noticeable only when the influence of the continental waters is already well marked. This is proved when one compares the results obtained with strontium, to the results of isotopic analysis made on oxygen, carbon, sulphur and hydrogen taken from the same samples.