In order to clarify some of the issues regarding the mineralogical content and the source area of the Cretaceous deposits from Ampoi Valley basin (Southern Apuseni Mountains) fourteen lithologic logs were drawn from the Ampoi Valley both side tributaries (Slatinii, Ruzi, Vâltori, Valea lui Paul, Feneş, Călineasa, Fierului Brook, Bobului, Satului, Tăuţi, Galaţi, Presaca Ampoiului, Valea Mică and Valea Mare brooks). The main sedimentary rock types were identified (conglomerates, wacke and lithic sandstones, clays, and marls). The sandstones were classified according to the ternary diagrams. Their petrographic features revealed both a magmatic and a metamorphic source area for them.
Suciu-Krausz, Erika; Bălc, Ramona; and Borbei, Florin
New data on the Western Transylvanides along the Ampoi Valley (Southern Apuseni Mts., Romania),
Studia UBB Geologia
Available at: http://scholarcommons.usf.edu/geologia/vol51/iss1/art8