Manheim, F. T.; Bischoff, J. L. (1969): Geochemistry of pore waters from the Shell Oil Company drill holes on the continental slope of the northern Gulf of Mexico. Elsevier, Amsterdam, Netherlands, In: Geochemistry of subsurface brines, 4, 63-82, georefid:1969-032685
Abstract:
Six holes were drilled in water 600-3,000 feet deep and penetrated up to 1,000 feet of Pliocene-Recent clayey sediments. Samples from near diapiric structures showed systematic increases of pore-water salinity with depth. Anomalous concentrations of K and Br indicate that at least one plug contains late-stage evaporite minerals. Salinities approaching halite saturation were observed. Samples from holes away from diapiric structures showed little change in pore-water chemistry, except for loss of SO (sub 4) and other variations attributable to early-stage diagenetic reactions with enclosing sediments. Thus, increased salt concentrations in even shallow sediments from this part of the Gulf appear to provide an indicator of salt masses at depth.
Coverage:
West: -98.0000 East: -80.3000 North: 30.0400 South: 18.0000
West: NaN East: NaN North: NaN South: NaN
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