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Devonian laterite in Chitral state, West Pakistan

September 26, 1968

A Devonian laterite has recently been discovered near Reshun in the Mastuj valley of Chitral State, West Pakistan. It is believed to be the fourth recorded Paleozoic laterite in the world. The laterite is entirely within a thick carbonate of the Shogram Formation of Upper Devonian (Frasnian) age. A chemical analysis of the laterite shows the principal constitutents to be: Al2O35.5%, SiO2, 21.7% Fe2O3 16.0%, FeO 10.3%, TiO2, 3.5% CaO 0.97%, and MgO 0.70%. Minerals determined by X-ray analysis include hematite, boehmite, diaspore, anatase, rutile, kaolinite, pyrophyllite and what is probably chamosite.

Publication Year 1969
Title Devonian laterite in Chitral state, West Pakistan
DOI 10.2113/gsecongeo.64.4.452
Authors Karl W. Stauffer
Publication Type Article
Publication Subtype Journal Article
Series Title Economic Geology
Index ID 70205582
Record Source USGS Publications Warehouse