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Geology And Economic Potential Of The Muddy Ranch Inlier, North-Central Oregon, Mustafa Kamal
Geology And Economic Potential Of The Muddy Ranch Inlier, North-Central Oregon, Mustafa Kamal
Loma Linda University Electronic Theses, Dissertations & Projects
There has been confusion for many years regarding the lithology and age of the rocks exposed in the Muddy Ranch Inlier in north-central Oregon. Taylor (1960) referred to these rocks as metasediments and informally named them the "Muddy Ranch phyllite". My studies indicate the inlier consists of weakly metamorphosed siltstone, mudstone, and less abundant sandstone.
Due to the absence of fossil evidence, it was not possible to determine the age of these rocks. However, from the stratigraphic setting and correlation with similar rocks exposed along structural trend to both the northeast and southwest, rocks of the Muddy Ranch Inlier may …