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Bulletin - Mineral Research & Exploration Institute of Turkey, vol.109, pp.65-73, 1989 (Scopus)
This Upper Cretaceous carbonate sequence was deposited in an area of upwelling water which supplied phosphorous and was deposited on the sea bottom as biogenic detritus of zoo- and phytoplankton, fish bones and scales. The biogenic accumulation with high content of organic matter and phosphorous was a prime source of the phosphate. Three basic phosphate peloid types are classified to the following origin of peloids: 1) in situ precipitation; 2) abrasion of phosphatized intraclast and bioclast and 3) phosphate micritization of fish bones. The phosphate peloids show the following different microstructures under the electron microscopy: 1) amorphous; 2) microglobular; 3) semi-crystallized; 4) microcrystallized and 5) cementing. -from Author