Geology topics
W. P. Pratt
Publications and source records attributed to W. P. Pratt.
Mineral resource assessment maps of the Harrison 1° x 2° quadrangle, Missouri and Arkansas
No abstract available.
Geologic map of the Rolla 1 degree by 2 degrees Quadrangle, Missouri
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Maps showing areal extent of selected Paleozoic shales in the northern Midcontinent, U.S.A.
No abstract available.
Lithologic cross sections of phanerozoic rocks in the northern Midcontinent, U.S.A.
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Isopach and lithofacies map of the Sauk sequence (excluding basal clastics) in the northern Midcontinent, U.S.A.
No abstract available.
The U.S. Midcontinent: a new frontier for mineral exploration.
The north-central US Midcontinent is underlain by a considerable thickness of sedimentary rocks, mostly Paleozoic, which lie upon a heterogeneous basement of Precambrian granitoid and metamorphic rocks. This article describes a representative sample of Midcontinent geology and explains why the authors believe this region is a 'new frontier' for mineral exploration and discovery. -Authors
Slides showing quantitative models for mineral-resource assessment of the Rolla 1 degree x 2 degrees Quadrangle, Missouri
Th.is report consists of nineteen 35-mm color slides sh.owing digital synthesis and quantitative modeling of five geologic recognition criteria for assessment of Mississippi Valley-type resource potential in the Rolla 1° x 2° quadrangle, Missouri. The digital synthesis and quantitative modeling (Pratt and others, 1982) was done to supplement an earlier manual synthesis and evaluation (Pratt, 1981). The five criteria synthesized in this study, and the sources of data used, are that most known deposits are: In dolomite of the Bonneterre Formation, near the limestone-dolomite interface, which is defined as ls:dol = 1:16 (Thacker and Anderson, 1979; Kisvarsanyi, 1982); Near areas where insoluble residues of "barren" Bonneterre Formation contain anomalously high amounts of base metals (Erickson and others, 1978); Near areas of faults and fractures in the Bonneterre Formation or in underlying rocks (Pratt, 1982); In "brown rock" (finely crystalline brown dolomite) near the interface with "white rock" (coarsely recrystallized, white or very light gray, vuggy, illite-bearing dolomite) (Kisvarsanyi, 1982); Near or within favorably situated digitate reef-complex facies (Kisvarsanyi , 1982).
Preliminary geologic map, west half of Rolla 1 degree x 2 degrees quadrangle, Missouri
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Geology and mineral resource potential of the Paddy Creek Wilderness Study Area, Texas County, Missouri
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Geologic map of exposed Precambrian rocks, Rolla 1 degree by 2 degrees Quadrangle, Missouri
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Aeromagnetic and geologic map of part of the Silver City mining region, Grant County, New Mexico
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