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Showing 1 to 7 of 7 for “"norite"”.
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Geology and Geochemistry of the Sheep Rock Mineralized Norite, Albany County, Wyoming
Made available in DSpace on 2014-12-11T18:10:05Z (GMT). No. of bitstreams: 1 7405700.pdf: 4724512 bytes, checksum: 8639601df2ead7f3e22cf3c36b7bbe1e (MD5) Previous issue date: 1973
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On Ultra-High Temperature Metamorphism in the Mid-Lower Crust
… work focuses on the development of hybrid monzonorites and emery at Salt Hill, located in the southeasternmost edge of the Cortlandt Complex. First, a thermobarometric study focuses on the P-T conditions of the country rock into which the Complex intruded. Pelitic schists from contact aureoles …
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Petrogenesis of the Moosehorn igneous complex, Maine
… magmatism ranging in composition from olivine norite through quartz diorite and granodiorite. Partially crystallized mafic magmas are often intruded by slightly peraluminous biotite ± hornblende granites as demonstrated by the occurrence of a wide range of enclave-host relationships. The …
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A study of localized failure modes in brittle materials
… studies of localization in concrete and norite are presented, together with boundary value problems of importance in mining applications. It is shown that qualitative agreement is obtained with experimental results.
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Constitutive modelling and finite element analysis in geomechanics
… against experimental results for Bushveld Norite, which is a very hard, brittle rock. The general form of the model, however, is suitable for application to soil and concrete. Both the plasticity cap model and the damage model were implemented into the finite element code NOSTRUM (developed …
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Petrologic and Thermodynamic Investigation of the Aqueous Transport of Platinum-Group Elements During Alteration of Mafic Instrusive Rocks
… of supercritical alteration of troctolite, norite, and olivine gabbro indicates that at high temperatures and pressures (500º to 700ºC and 2 kbar) fluid pH becomes more alkaline and oxygen fugacity decreases during fluid/rock reaction. For these conditions, calculation of PGE solubility in a …
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Rock Drilling with impregnated diamond microbits
… demonstrated in detail for a single rock type, norite, for which it is shown the transition takes place at a pressure of approximately 400 MPa per actively drilling stone irrespective of the diamond size or concentration. A discussion of rock drillability testing demonstrates that experimental …