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Phosphate peloids from the Negev phosphorites

The most common components of the Negev phosphorites are phosphate peloids (undifferentiated brown ovoid grains lacking internal structure). A systematic study of these peloids indicates that they are the result of convergent diagenetic processes, the more important being: 1, growth around a foreign grain (usually a foraminifer); 2, phospho-micritization of bone fragments; 3, fragmentation and abrasion of intraclasts (laminated and unlaminated); 4, pelletization of aggregates; and 5, phosphatization and fragmentation of faecal pellets. The Negev 'pelletal phosphorites' (as well as others), and what the French call 'phosphate sableux' are therefore the products of diagenesis.

This article has been cited by other articles:

				Z. Lewy Pebbly phosphate and granular phosphorite (Late Cretaceous, southern Israel) and their bearing on phosphatization processes Geological Society, London, Special Publications, 1990; 52: 169 - 178. [Abstract] [PDF]

				J. M. McArthur, M. L. Coleman, and J. M. Bremner Carbon and oxygen isotopic composition of structural carbonate in sedimentary francolite Journal of the Geological Society, 1980; 137: 669 - 673. [Abstract] [PDF]

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