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The Global ETD Search service is a free service for researchers
to find electronic theses and dissertations. This service is
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Networked Digital Library of Theses and Dissertations.
Our metadata is collected from universities around the world. If you manage a university/consortium/country archive and want to be added, details can be found on the NDLTD website.
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Showing 361 to 370 of 459 (0.027 seconds)Spelling suggestions: "subject:"eology -- arizona"" "subject:"eology -- orizona""
| 361 |
Petrography and petrogenetic history of a quartz monzonite intrusive, Swisshelm Mountains, Cochise County, ArizonaDiery, Hassan Deeb, 1934- January 1964 (has links)
The Swisshelm Quartz Monsonite covers about two square miles on the western slope of the Swisshelm Mountains, Cochise County, Arizona. Field observation and petrographic study indicate that the quartz monsonite was derived by differentiation and late-stage alkali metasomation of probably a quartz dioritic magma rich in alkali and volatile constituents. The high concentration of the volatiles is believed to be of great importance in the development of the different facies and rock types. Four different facies of the Swisshelm Quartz Monsonite have been distinguished as (1) the normal facies, (2) the altered facies, (3) the fine-grained facies, and (4) the contact facies. Also, several aplite dikes, local beryl-bearing pegmatite patches, and numerous quartz veins are present and attributed to late magmatic differentiation. Inclusions of an early and late magmatic facies are sparcely disseminated through the quartz monsonite. The Swisshelm Quartz Monsonite magma has intruded and metamorphosed the Upper Paleozoic sediments of the Mace Group as well as the Lower Cretaceous sediments of the Bisbee Group. The metamorphism is of a contact metasomatic type to which the mineralogical and textural changes in the country rocks have been attributed.
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| 362 |
Structures and microfabrics of a zone of superimposed deformation, foothills fault zone, east flank of the Huachuca Mountains, southeast ArizonaCurrier, Debra Ann January 1985 (has links)
No description available.
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| 363 |
Structure and petrology of a part of the east flank of the Santa Catalina Mountains, Pima County, ArizonaPilkington, H. D. (Harold Dean), 1930- January 1962 (has links)
No description available.
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| 364 |
Detailed geological reconnaissance of the central Tortilla Mountains, Pinal County, ArizonaSchwartz, Roland James, 1905- January 1954 (has links)
No description available.
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| 365 |
Fracturing along the margins of a porphyry copper system, Silver Bell district, Pima County, ArizonaKanbergs, Karlis January 1980 (has links)
No description available.
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| 366 |
The development of fractures in the Harris Ranch quartz monzonite related to the Sierrita porphyry copper system, Pima County, ArizonaWhite, John Lester January 1980 (has links)
No description available.
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| 367 |
The geology and geochronology of the northern Picacho Mountains, Pinal County, ArizonaJohnson, Gary Steward January 1981 (has links)
No description available.
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| 368 |
Preliminary investigation of upper Sabino Canyon dam, Pima County, ArizonaKurupakorn, Somchai, 1948- January 1973 (has links)
No description available.
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| 369 |
The geology of the Kaibab formation, Marble Platform, Coconino County, ArizonaBollin, Edgar Marshall, 1925- January 1954 (has links)
No description available.
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| 370 |
Geology and ore deposits of the southern section of the Amole mining district, Tucson Mountains, Pima county, ArizonaKinnison, John Emmett, 1929- January 1958 (has links)
No description available.
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