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Mineral Stratigraphy

The most abundant mineral in the rocks of the main body of the Basement sill studied by Hamilton (1965) is calcic plagioclase feldspar (labradorite-bytownite). [Pg.420]

The crystals are generally euhedral and unaltered. The dolerite also contains two and, in some cases, even three pyroxenes augite, pigeonite, and hypersthene. In addition, all specimens contain opaque minerals (magnetite and ilmenite). Quartz and alkali feldspar are prominent in the rocks of the diorite pegmatite and granophyre zones. [Pg.421]

Hamilton (1965) reported that the Peneplain and other sills and dikes that intruded the Beacon rocks on New Mountain and Pyramid Mountain along the upper Taylor Glacier are likewise composed of plagioclase, pyroxenes, and opaques with minor quartz and alkali feldspar as well as chlorite and other alteration products. In addition, the Peneplain sill, located east of the mouth of Arena Valley, is also differentiated and includes a pegmatitic zone near its top. The chemical [Pg.421]

The petrogenesis of the sills of Ferrar Dolerite in the Transantarctic Mountains has two aspects  [Pg.421]

The crystallization of the magma accompanied by crystal-liquid fractionation, segregation of crystals, contamination of the magma after intrusion, and hydrothermal alteration [Pg.421]

Haggerty S. E. (1989) Upper mantle opaque mineral stratigraphy and the genesis of metasomites and alkali-rich melts. In Kimberlites and Related Rocks. Geological Society of Australia Special Publication No. 14 (ed. J. Ross). Blackwell, Perth, vol. 2, pp. 687-699. [Pg.967]

The Miocene stratigraphy in the Baguio District has been intruded by a series of Pliocene rocks. The homblende-phyric Mafic Dike Complex intruded the central part of the Baguio District at 4.5 - 4 Ma (Waters et al. submitted). The complex is characterized by dense clusters of coarsely hornblende phenocrystic dikes with evidence for multiple injections. Several Pliocene to Pleistocene dioritic intrusive complexes are associated with porphyry copper-gold mineralization in the Baguio district. The Black Mountain Intrusive Complex includes the Black Mountain quartz diorite and the Mexico Diorite, as well as andesite dykes that have yielded ages of between 3.14 and 2.78 Ma (Waters et al. submitted Sweet etal. 2008). Other Pliocene intrusive rocks... [Pg.166]

Ayer, J.A., Barr, E., Bleeker, W.C. et a . 2003. New geochronological results from the Timmins area Implications for the timing of late-tectonic stratigraphy, magmatism and gold mineralization. Ontario Geological Survey Summary of Field Work 2003, 33 p. [Pg.268]

A molar element ratio (MER) analysis was undertaken to gain insight into the diversity and compositional controls on these rocks, and to identify stratigraphy hosting alteration zones and potential mineral deposits. [Pg.340]

Abstract The late Devonlan-early Carboniferous volcanic units of the Harvey Group west of Fredericton have received less attention than similar volcanic areas regarding their volcanic characteristics and potential for metallic mineral occurrences. Previous research and mineral exploration activity between the 1950s and 1980s typically focused on the search for Uranium mineralization and improved knowledge of the local volcanic stratigraphy. [Pg.485]

Walker, J. A. McCutcheon, S.R., 1995. Siluro-Devonian stratigraphy of the Chaleurs Bay Synclinorium, northern New Brunswick. In Merlini, S.A.A. ed.. Current Research 1994. New Brunswick Department of Natural Resources, Minerals, Policy and Planning Division, Miscellaneous Report 18, 225-244. [Pg.514]

Waight T. E., Maas R., and Nicholls I. A. (2000) Fingerprinting feldspar phenocrysts using crystal isotopic composition stratigraphy implications for crystal transfer and magma mingling in S-type granites. Contrib. Mineral. Petrol. 139, 227-239. [Pg.1671]

DeVoto, R.H., 1990, Paleozoic stratigraphy, tectonism, thermal history, and basin evolution of central Colorado, in Economic Geology Monograph Number 7 Carbonate-hosted sulfide deposits of the central Colorado mineral belt, D.W. Beaty, G.P. Landis, and T.B. Thompson, eds., Harwood Academic Publishers, Chur, Switzerland, pp. 29-44. [Pg.122]

Opdyke ND, Chaimell JET (1996) Magnetie Stratigraphy. Aeademie Press, New York Pankhurst QA, Pollard RJ (1992) Struetural and magnetie properties of ferrihydrite. Clays Clay Minerals 40 268-272... [Pg.287]

Zeller EJ, Dreschhoff GAM (1987) Radioactive minerals and the pre-Beacon erosion surface, Antarctica. In McKenzie GD (ed) Gondwana Six Stratigraphy, sedimentology, and... [Pg.371]

BaUance PR (1967) Stratigraphy and hydrothermal mineralization of the Beacon Group in the Allan Hills-Carapace Nunatak area, Victoria Land, Antarctica. Aust J Sci 30(11) 446... [Pg.408]

Ishizaka K, Yanagi T, Hayatsu K (1977) A strontium isotopic study of the volcanic rocks of the Myoko Volcano Group, central Japan. Contrib Mineral Petrol 63 295-307 lUGS (2002) International stratigraphic chart. International Commission of Stratigraphy... [Pg.412]

Cooper AK, Davey FJ, Behrendt JC (1987) Seismic stratigraphy and structure of the Victoria Land Basin, western Ross Sea, Antarctica. In Cooper AK, Davey FJ (eds) The Antarctic continental margin Geology and geophysics of the Western Ross Sea. Circum-Pacific Couned for Energy and Mineral Resources, Earth Science Series, 5B. Houston, TX, pp 27-76 Cooper AK, Davey FJ, Behrendt JC (1991) Structural and depo-sitional controls on Cenozoic and ( ) Mesozoic strata beneath... [Pg.751]

See other pages where Mineral Stratigraphy is mentioned: [Pg.420]    [Pg.421]    [Pg.420]    [Pg.421]    [Pg.229]    [Pg.408]    [Pg.23]    [Pg.59]    [Pg.60]    [Pg.80]    [Pg.328]    [Pg.341]    [Pg.425]    [Pg.509]    [Pg.63]    [Pg.344]    [Pg.357]    [Pg.358]    [Pg.313]    [Pg.3116]    [Pg.3789]    [Pg.247]    [Pg.373]    [Pg.218]    [Pg.429]    [Pg.204]    [Pg.24]    [Pg.231]    [Pg.240]    [Pg.395]    [Pg.157]    [Pg.302]    [Pg.85]    [Pg.27]    [Pg.190]    [Pg.788]    [Pg.368]   


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Stratigraphy

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