TY - JOUR
T1 - Boron isotope variations during fractional evaporation of sea water
T2 - new constraints on the marine vs. nonmarine debate
AU - Vengosh, A.
AU - Starinsky, A.
AU - Kolodny, Y.
AU - Chivas, A. R.
AU - Raab, M.
PY - 1992
Y1 - 1992
N2 - Examination of boron isotopes, elemental B, Br, and Li in brines, and coprecipitated salts during fractional evaporation of sea water shows that Br, Li, and B in the evaporated sea water have lower concentrations than expected, as determined from mass-balance calculations. The deficiency is found beyond a degree of evaporation of ~30 and is associated with a gradual increase in the δ 11 B values of the evaporated sea water, from 39‰ to 54.7‰. The boron isotope composition of sea water (δ 11 B = 39‰) is significantly higher than that of continental water (δ 11 B = -3‰ ± 5‰). Salt deposits may be depleted in 11 B by 20‰ to 30‰ relative to their parent brines. These variations suggest that boron isotopes can be used to determine the origin (marine vs. nonmarine) of brines and ancient evaporitic environments. -from Authors
AB - Examination of boron isotopes, elemental B, Br, and Li in brines, and coprecipitated salts during fractional evaporation of sea water shows that Br, Li, and B in the evaporated sea water have lower concentrations than expected, as determined from mass-balance calculations. The deficiency is found beyond a degree of evaporation of ~30 and is associated with a gradual increase in the δ 11 B values of the evaporated sea water, from 39‰ to 54.7‰. The boron isotope composition of sea water (δ 11 B = 39‰) is significantly higher than that of continental water (δ 11 B = -3‰ ± 5‰). Salt deposits may be depleted in 11 B by 20‰ to 30‰ relative to their parent brines. These variations suggest that boron isotopes can be used to determine the origin (marine vs. nonmarine) of brines and ancient evaporitic environments. -from Authors
UR - http://www.scopus.com/inward/record.url?scp=84874988190&partnerID=8YFLogxK
U2 - 10.1130/0091-7613(1992)020<0799:BIVDFE>2.3.CO;2
DO - 10.1130/0091-7613(1992)020<0799:BIVDFE>2.3.CO;2
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AN - SCOPUS:84874988190
SN - 0091-7613
VL - 20
SP - 799
EP - 802
JO - Geology
JF - Geology
IS - 9
ER -