Blar i NGU Open Archive på forfatter "Walker, Nicholas"
-
Fluorine-rich biotites and alkali-metasomatism as guided to massive sulphide deposits: an example from the Bleikvassli Zn-Pb-Ah-(CU) deposit, Norway
Walker, Nicholas; Bjerkgård, Terje; Birkeland, Anne; Larsen, Rune B. (NGU-Rapport (95.152), Report, 1995)Frie emneord: Sulfidmalmforekomst Fluorrike biotitter The Bleikvassli massive sulphide deposit is closely associated with a microcline gneiss interpreted as the metamorphosed equivalent of an alkaline magmatic rock of ... -
U-Pb zircon age of a dolerite dyke from near Hamningberg,Varanger Peninsula, North Norway, and its regional significance
Roberts, David; Walker, Nicholas (NGU Bulletin (432), Journal article, 1997)A dolerite dyke cutting very low-grade metasedimentary rocks of the Løkvik- fjellet Group near Hamningberg, NE Varanger Peninsula, Finnmark, has yielded a U-Pb zircon upper intercept age of 567,1 +30\/23 Ma. This ...