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Oil-prone source rocks in Upper Triassic Otuk Formation on headwaters of Autumn Creek, north-central Alaska. Geochemistry of many oil-stained outcrop samples suggest that oil was sourced from the Otuk across a broad region of northern Alaska. Red helicopter for scale. Location ~150 mi. southwest of Prudhoe Bay.
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Oil-prone source rocks in Upper Triassic Otuk Formation on headwaters of Autumn Creek, north-central Alaska. Geochemistry of many oil-stained outcrop samples suggest that oil was sourced from the Otuk across a broad region of northern Alaska. Red helicopter for scale. Location ~150 mi. southwest of Prudhoe Bay.