Mineralogical and chemical investigation of biogenic siliceous Antarctic deep-ses sediments, supplement to: Bohrmann, Gerhard; Abelmann, Andrea; Gersonde, Rainer; Kuhn, Gerhard (1994): Pure siliceous ooze, a diagenetic environment for early chert formation. Geology, 22(3), 207-210

Gerhard Bohrmann, Andrea Abelmann, Rainer Gersonde & Gerhard Kuhn
The formation of marine opal-CT nodules or layers as early diagenetic deposits has been documented only in Antarctic deep-sea sediments. In contrast, porcellanites and cherts in land sections and Deep Sea Drilling Project and Ocean Drilling Program drill sites are usually found in sediment sections of Miocene age and older. During R.V. Polarstem cruises ANT-IX/3 and 4, young porcellanites were recovered for the first time in contact with their host sediment in two cores from...
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