Title: 36. REMARKS CONCERNING GLAUCONITIC MATERIALS COLLECTED DURING LEG 48
Abstract:Different components were collectively described as glauconite in the shipboard studies of cores from Sites 403 and 404. Distinction of these components by careful and detailed analysis allows reconst...Different components were collectively described as glauconite in the shipboard studies of cores from Sites 403 and 404. Distinction of these components by careful and detailed analysis allows reconstruction of the initial environment of deposition. Two types are present. A green facies due to chloritized micas that indicate subaerial exposure and alteration and an authigenic glauconie formed in the oceanic realm far from subaerial exposure. The mineralogic nature of the authigenic marine minerals studied here may be correlated with a brief and geologically insignificant period of deposition. All available data suggest that the North American and European continents have not contributed to these sediments. From the preceding studies (Odin, 1975), it seems clear that the green pellets derive from an initial pelletal framework, composed of pellets, grains, debris, and tests of various chemical compositions. In the interstices of the framework the glauconite-like minerals have grown and evolved. The nature of the initial framework, its alteration, and the mineralogy of the authigenic minerals are useful indicators of the sedimentary environment.Read More
Publication Year: 1975
Publication Date: 1975-01-01
Language: en
Type: article
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Cited By Count: 1
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