Petrology of the Morrison Formation in the Colorado Plateau Region PDF Download
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Author: Robert Allen Cadigan Publisher: ISBN: Category : Geology Languages : en Pages : 142
Book Description
Additional title page description: Interpretation of regional compositional and textural trends in sandstone strata in a major uranium-ore-bearing formation which was deposited in a subsiding continental basin in Late Jurassic time.
Author: Robert Allen Cadigan Publisher: ISBN: Category : Geology Languages : en Pages : 142
Book Description
Additional title page description: Interpretation of regional compositional and textural trends in sandstone strata in a major uranium-ore-bearing formation which was deposited in a subsiding continental basin in Late Jurassic time.
Author: Daniel R. Shawe Publisher: ISBN: Category : Petrology Languages : en Pages : 44
Book Description
Microscopic study of uranium- and vanadium-bearing and associated sedimentary units contributes to the understanding of the geologic events that formed the rocks: sedimentation, deep burial, mild deformation, and alteration.
Author: Lawrence C. Craig Publisher: BiblioGov ISBN: 9781289007607 Category : Languages : en Pages : 50
Book Description
Three subdivisions of the Jurassic rocks of the Colorado Plateau region are: the Glen Canyon group, mainly eolian and fluvial sedimentary rocks; the San Rafael group, marine and marginal marine sedimentary rocks; and the Morrison formation, fluvial and lacustrine sedimentary rocks. In central and eastern Colorado the Morrison formation has not been differ- entiated into members. In eastern Utah, northeastern Arizona, northwestern New Mexico, and in part of western Colorado, the Morrison may be divided into a lower part and an upper part; each part has two members which are di1Ierentiated on a lithologic basis. Where differentiated, the lower part of the Morrison consists either of the Salt Wash member or the Recapture member or both; these are equivalent in age and inter tongue and intergrade over a broad area in the vicinity of the Four Corners area of New Mexico, Colorado, Arizona, and Utah. The Salt Wash member is present in eastern Utah and parts of western Colorado, north- eastern Arizona, and northwestern New Mexico. It was formed as a large alluvial plain or 'fan' by an aggrading system of braided streams diverging to the north and east from an apex in south-central Utah. The major source area of the Salt Wash was to the southwest of south-central Utah, probably in west-central Arizona and southeastern California. The member was derived mainly from sedimentary rocks. The Salt Wash deposits grade from predomi- nantly coarse texture at the apex of the 'fan' to predominantly flne texture at the margin of the 'fan'. The Salt Wash member has been arbitrarily divided into four facies: a con- glomera tic sandstone facies, a sandstone and mudstone facies, a claystone and lenticular sandstone facies, and a claystone and limestone facies. The Recapture member of the Morrison formation is present in northeastern Arizona, northwestern New Mexico, and small areas of southeastern Utah and southwestern Colorado near the Four Corners. It was formed as a large alluvial plain
Author: Alfred T. Miesch Publisher: ISBN: Category : Geology Languages : en Pages : 192
Book Description
Prepared partly on behalf of the U.S. Atomic Energy Commission. A regional study with special reference to the Frenchy Incline deposit, San Miguel County, Colorado.
Author: Robert Allen Cadigan
Author: Robert Allen Cadigan
Author: Geological Survey (U.S.)
Author: Robert Allen Cadigan
Author: Lawrence Carey Craig
Author: Lawrence Carey Craig
Author: Lawrence Carey Craig
Author: Robert Allen Cadigan
Author: Daniel R. Shawe
Author: Lawrence C. Craig
Author: Alfred T. Miesch