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The AAPG/Datapages Combined Publications Database
AAPG Bulletin
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The Intermountain Association of Petroleum Geologists conducted its 1951 field trip through the Canyon, House, and Confusion ranges of west central Utah within the Basin and Range Province. Rocks of the Canyon Range have recently been assigned to the Cambrian and pre-Cambrian with contiguous Cretaceous conglomerates whereas previously considered as of Carboniferous and Tertiary age. The 10,000-foot Cambrian section of the House Range was studied in conjunction with close-up observations of the Wheeler Amphitheater, Rainbow Canyon (Marjum Pass), and the Notch Peak granite mass. The Confusion Range includes rocks of each Paleozoic period from Ordovician through Permian with an aggregate section of about 20,000 feet. A thin Triassic mask is also present in isolated outcrops. The Confusion Range is generally synclinal with an extended and interrupted east limb. Both normal and reverse faulting may be observed along with textbook anticlines, notwithstanding spectacular examples of major overturning. Three exploratory wells are now being drilled as a result of recent geologic research in west central Utah.
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