TY - SER AU - Tewksbury,B.J TI - Revised interpretation of the age of allochthonous rocks of the Uncompahgre formation, Needle mountains, Colorado SN - 00167606 KW - Protérozoïque KW - Roche metamorphique KW - Quartzite KW - Métapelite KW - Age KW - Stratigraphie KW - Autochtonie KW - Etats Unis KW - Colorado KW - Monts Needle N1 - bibliogr. p. 232 ER -