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Brines and Interstitial Brackish Water in Drill Cores from the Deep Gulf of Mexico

1970; American Association for the Advancement of Science; Volume: 170; Issue: 3953 Linguagem: Inglês

10.1126/science.170.3953.57

1095-9203

Frank T. Manheim, F.L. Sayles,

Methane Hydrates and Related Phenomena

Marked increases in interstitial salinity occur in two drill holes located in the Gulf of Mexico at a water depth of more than 3500 meters. The increases probably arose through diffusion of salt from buried evaporites. In one hole, however, brackish water was encountered on penetrating the oil-permeated cap rock of a salt dome. The phenomenon is attributed to production of fresh water during oxidation of petroleum hydrocarbons and decomposition of gypsum to form native sulfur.