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Showing 1 to 20 of 214 for “"petrography"”.
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Petrography and Evolution of Niagaran Reefs, Indiana
Made available in DSpace on 2014-12-09T20:34:10Z (GMT). No. of bitstreams: 1 6406166.pdf: 4217270 bytes, checksum: 8d44b27abdfd6057648c4bba25ef8f90 (MD5) Previous issue date: 1963
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Petrography of Northeastern Lake Michigan Bottom Sediments
Made available in DSpace on 2014-12-04T19:13:56Z (GMT). No. of bitstreams: 1 6003964.pdf: 3342567 bytes, checksum: 814354eb2109410074d58455730b699c (MD5) Previous issue date: 1960
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Relationships between the geomechanics and petrography of ignimbrite
Fundamental petrographic controls on ignimbrite strength are examined, and those aspects of the texture and fabric of the rocks which are primarily responsible for the strength of ignimbrite identified. The range of strength exhibited by ignimbrite is quantified, and the value of common, …
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Petrography of the Harvest Lake Area, Quebec, Canada
<p>It was found, by determining the types of minerals found in the Harvey Lake area, that the sedimentary rocks of sandstone, dolostone, limestone, and shales were regionally metamorphosed to a degree of metamorphism corresponding with that of the “Staurolite-Almandine Subfacies” of the …
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Geochemistry and Petrography of Beartrack Mine, Lemhi County, Idaho
The Beartrack Mine is located in east-central Idaho and is currently being explored by Meridian Gold Company, a subsidiary of the Yamana Gold Company. Production between 1994 and 2000; yielded a total of 608,741 ounces of gold. Mining focused on a shear zone associated with the Panther Creek Fault …
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Petrography of Precambrian iron formation, Pembina County, North Dakota
In October of 1964 the Topographic Branch of the United States Geological Survey reported difficulties in using magnetic compasses while mapping in the areas of Akra and Hensel, Pembina County, North Dakota. University of North Dakota geologists located anomalies of 67,500 gammas 1.6 lon east of …
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Petrography and Depositional Environment of the Sparland Cyclothem (Pennsylvanian)
Made available in DSpace on 2014-12-09T20:34:08Z (GMT). No. of bitstreams: 1 6406105.pdf: 4444110 bytes, checksum: f744d1c0741c108f1f13c9c205f2469b (MD5) Previous issue date: 1963
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Petrology and petrography of samples from two Algoa Basin cores
Ninety-four samples from two cores drilled in the Uitenhage Group of the Algoa Basin were analysed. The group of sedimentary rocks comprises the Enon, Kirkwood and Sundays River Formations and consists of continental (Enon and Kirkwood Fms.) and marine (Sundays River Fm.) deposits typical of a …
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Stratigraphy and petrography of the Wytheville formation in southwest Virginia
The Wytheville Formation, a newly recognized rock-stratigraphic unit between the Shady Dolomite and the Rome formations, is composed of carbonate rocks which range considerable in lithology between well-defined lower and upper limits. In a number of sections south of Wytheville, Wythe County, …
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Petrography and petrology of the igneous intrusive in Woodson County, Kansas
Digitized by Kansas State University Libraries
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Petrography and petrology of the igneous intrusive in Woodson County, Kansas
Digitized by Kansas State University Libraries
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Geology and petrography of the Wellington Seam, Nanaimo Coalfield, Vancouver Island
The Wellington Seam in the Nanaimo Coalfield of Vancouver Island has contributed significantly to British Columbia's coal production since its discovery in 1871. Difficult geological conditions and conflicts between surface land use and mining activities have hampered the efficient development of …
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Petrography of the Upper Cambrian Dolomites of Warren County, New Jersey
Made available in DSpace on 2014-12-04T19:14:00Z (GMT). No. of bitstreams: 1 6100224.pdf: 6295129 bytes, checksum: f409c1678ac352424509936fd0f4fe20 (MD5) Previous issue date: 1960
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Stratigraphy and Petrography of Illinoian and Kansan Drift in Central Illinois
Made available in DSpace on 2014-12-04T19:14:22Z (GMT). No. of bitstreams: 1 6303274.pdf: 5444897 bytes, checksum: 62229adaaa42c52f8c82eb2ff3c3ab1e (MD5) Previous issue date: 1962
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Petrography of Algal Bioherms in the Burnt Bluff Group (Silurian), Wisconsin
Made available in DSpace on 2014-12-04T19:14:23Z (GMT). No. of bitstreams: 1 6303341.pdf: 3938304 bytes, checksum: 063e9346647a83f1a2df15547ae2817e (MD5) Previous issue date: 1962
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Petrography and geology of the Shoshone mining region in northwestern Wyoming
Thesis: B.S., Massachusetts Institute of Technology, Department of Geology, 1922
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Petrography and geochemistry of the Gross Spitzkoppe Igneous Complex Central-Western Namibia
The Gross Spitzkoppe Igneous Complex of western central Namibia represents an anorogenic magmatic event related to the opening of the South Atlantic ocean during the late Mesozoic period. The magmatic event (Tristan mantle plume?) is characterised by bimodal epizonal emplacement of evolved melt …
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GEOCHEMISTRY AND PETROGRAPHY OF SPELEOTHEMS FROM TURKEY AND IRAN: PALAEOCLIMATE AND DIAGENESIS
Abstract Speleothems contain key archives of palaeoclimatic information, which can be interpreted through multiple geochemical and petrographic proxies, and precisely dated by Uranium Series dating. As U/Th dating is only viable for samples up to approximately 700 kyr of age, U/Pb dating must be …
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Petrography and Diagenesis of Cambrian Dolomite in Tabei Uplift, Northern Tarim Basin, China
… wells, one hundred and fifty-two thin-section petrography studies, cathodoliuminescense microscopy examination, trace element analysis, stable and radiogenic isotopic analysis and fluid inclusion analysis, the dolomites are interpreted as: Type 1 dolomite is microcrystal to very …
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