 | | Journal (article/letter/editorial) |
| series RH1 olivines range from hypersthene to bronzite (En73 to En87), averaging En77.1±3.0 (n = 24)...olivine. Microlites in the rims are predominantly bronzite, ranging in composition from En74 to En85 and...our experimental amphiboles in a compositional region, unoccupied by other amphiboles, believed to be...cooling rates produced pyroxenes in the solvus region between augite and pigeonite (Grove and Bence 1979)... (1992) Cummingtonite and the evolution of the Mount St. Helens (Washington) magma system; an experimental |
 | Tang, Gong-Jian, Wang, Qiang, Wyman, Derek A., Li, Zheng-Xiang, Zhao, Zhen-Hua, Yang, Yue-Heng (2012) Late Carboniferous high ΔNd(t)âΔHf(t) granitoids, enclaves and dikes in western Junggar, NW China: Ridge-subduction-related magmatism and crustal growth. Lithos, 140. 86-102 doi:10.1016/j.lithos.2012.01.025 | Journal (article/letter/editorial) |
| Granitoid Enclave Dike Crustal growth Ridge subduction Central Asian Orogenic Belt a b s t r a c t We report...the Keramay area, of the western Junggar region of Central Asian Orogenic Belt (CAOB). Zircon UâPb dating...granites. All granitoids, enclaves and dikes in this region have high positive ΔNd(t) (+ 7.13 to + 9.74) and...the composition of Weinschenk's sanukite suite (bronzite-bearing glassy aphyric andesite) (Weinschenk,...between crust- and mantle-derived magmas. The Central Asian Orogenic Belt (CAOB), also known as âthe |
 | | Journal (article/letter/editorial) |
| study of experimental run-products in the 800 °C region in this system, by HRTEM for example, would certainly...Eskola, P. (1914) On the petrology of the OrijÀrvi region in southwestern Finland. Bulletin de la Commission...blackwall, and rodingite at Paddy-Go-Easy Pass, Central Cascades, Washington. Journal of Petrology, 16...orthopyroxene-cordierite-bearing assemblages at Laouni, Central Hoggar, Algeria. Journal of Metamorphic Geology...properties of anthophyllite, diopside, enstatite, bronzite, and wollastonite. The American Mineralogist, |
 | | Journal (article/letter/editorial) |
| 1993) ABSTRACT Lascar Volcano, located in the Central Volcanic Zone of Northern Chile, is a medium- to...Northern Volcanic Zone (NVZ) from 2°N to 5°S, the Central Volcanic Zone (CVZ) from 16°S to 28°S, and the...Zones the crust is 50 km thick or less, but the Central Zone is built on thick (50-70 km) crust. On the...B: Glaciation. Eruption of Aguas Calient** A: Central om http://petrology.oxfordjournals.org/ at Imperial...Analysed compositions range from hypersthene to bronzite, but occasional highertemperature Mg-pigeonite |
 | | Book (edition) |
| Our earliest ancestors evolved in the volcanic region of the East African Rift, where their activities...sport of nature that humans evolved in a volcanic region, or was this African volcanic environment especially...is, if the mantle rock were brought upward to a region of shallower depth in the Earth. It was only with...Krakatau, 1883 Mount PeleÌe, 1902 Paricutin, 1943 Bezymianny, 1956 Surtsey, 1963 Mount St. Helens, 1980...1980 El Chichon, 1982 Nevado del Ruiz, 1985 Pinatubo, 1991 B.C. One of the largest explosive eruptions |
 | | Report (chapter) |
| major focus of igneous petrology owing to the central role it plays in crustal evolution and the hazards...beneath the Caribbean plate has generated the Central American Volcanic Arc (CAVA) between Guatemala...within the CAVA are from lavas erupted in the central and southern parts of the arc. Beneath Guatemala...cone-building phases, each erupted from a common central summit vent or nearby flank vents, that have been...MARIÌA DACITE ions that were emitted from only the central 2 mm squares of the sputtered area by using a field |
 | | Book (edition) |
| ....................... 1625 IX.1. Andaman Sea Region ..................................................................... 2003 IX.8. Philippines (General, Palawan, Luzon) ........................................................... 2048 IX.9. South Philippines (Celebes Sea, Sulu Sea, Sandakan) .............public-domain publications listed alphabetically by region or by subject. It resumes a tradition of annotated...MOLUCCAS SULA BUTON SULAWESI CELEBES SEA (S PHILIPPINES) SULU SEA ARAFURA SEA NEW GUINEA (PAPUA, IRIAN) |
 | | Journal (issue) |
| tanzanite crystal, from the Merelani Hills, Arusha Region, Tanzania. JOE BUDD, THE ARKENSTONE/ IROCKS.COM...this emerged as the highest landmark in Tanzania, Mount Kilimanjaro. In the shadow of Kilimanjaro, we have...space below Mount Kilimanjaro in search of tanzanite. Mining crews work space below Mount Kilimanjaro...1/2â arbor hole $16.75 $14.40 1-0208 1/4-20 screw mount 16.75 14.40 A good, solid tin alloy pre-polishing...most important American mine artists in the Oaxaca region of Mexico under locations in the southwest that |
 | | Report (issue) |
| The Cu-Ni sulphide ore deposits of the Sudbury region have been known to contain PGE since the discovery...respectively. Focussing on recent exploration in central and northeastern Ontario, James et al. describe...disseminated sulphide ores of the Norilâsk-Taimyr region are described in detail by Komarova et al. They...UralAlaskan-type Kytlym and Uktus complexes, northern and central Urals, Russia. Canadian Mineralogist, 40, p. 357-376...of Pd, Pt, Au, Ag and Hg minerals in the Pilbara region of Western Australia. Canadian Mineralogist, 40 |
 | | Book |
| pigeonite ferroan pigeonite unknown in the nature bronzite enstatite MgSiO3 hyperstĂšne ferrosilite FeSiO3...meteorites) and clinoferrosilite (volcanic rocks). Bronzite is intermediate between enstatite and hyperstene...sign (hyperstene is optically positive); the name bronzite is nowadays considered a synonym of hypersten...Pyroxenes of the Velay volcanic series, French Massif Central (unpublished data by E. Berger). DEMANGE_Book...series, pigeonite is replaced by the enstatite/bronzite, because magnesian pigeonite crystallizes at higher |
 | | Book |
| (. Fig. 1.14a). From the distances between the central points of the respective anions and cations, their...between a mineral and an immersion oil in a grain mount is called the relief. It becomes visible, if the...illumination (Greek ÎșÏÎœÎżÏ = cone), that is, when only the central light ray enters the thin section under a right...progressively from 90° with increasing distance from the central path. To this effect a high-power objective (with...coccoliths. From plankton sample of the Kimberley region, Australia, kindly provided by CSIRO Tasmania (picture |
 | | Book |
| explorationist in his or her search for a prospective region in which to explore. An overview of the geophysical...that of the Sukhoi Log orogenic Au-Pt deposit in central Asia, written by V.V. Distler and M. Yudovskaya...Fractional removal of melt throughout this rising melt region results in a complex process of re- 3 69 109...lithosphere Decompression melting not possible in shaded region 500 100 200 Depth (km) 300 FIG. 1-1. P-T diagram...remains saturated with sulfide liquid in the source region (Bockrath & Ballhaus 2004b). There remain serious |
 | | Journal (article/letter/editorial) |
| 1â420 by a pilot project on mineral deposits in Central Europe and in the spreadsheet classiïŹcation scheme...epigenetic and diagenetic mineral deposits in Central Europe . . . . . . . 54. Conclusions â the importance...numerous and in this context some studies from Central Europe may be quoted as representative of this...on fossil fuels, ore and industrial minerals in Central Europe two separate approaches have been taken...crustal consolidation of what is called today Central Europe: (1) stratabound deposits, (2) thrust-bound |
| | Journal (article/letter/editorial) |
| 1â420 by a pilot project on mineral deposits in Central Europe and in the spreadsheet classiïŹcation scheme...epigenetic and diagenetic mineral deposits in Central Europe . . . . . . . 54. Conclusions â the importance...numerous and in this context some studies from Central Europe may be quoted as representative of this...on fossil fuels, ore and industrial minerals in Central Europe two separate approaches have been taken...crustal consolidation of what is called today Central Europe: (1) stratabound deposits, (2) thrust-bound |
 | | Book |
| see Fig. 1.5); the dashed lines delineate the region of overlap between alkali and subalkali basalts...solution series was divided into 6 ranges (enstatite, bronzite, hypersthene, etc). Table 2.2 Petrographic subdivisions...ductile skin becomes anchored at the edges while the central portion continues to be carried forward by the...lines in Fig. 2.1, and basalts plotting in this region are commonly designated as transitional basalts...rifts. NVZ, CVZ and SVZ refer to the northern, central and southern volcanic zones of the Andean cordillera |
 | | Report (issue) |
| the U.S. Government. Published in the Eastern Region, Reston, Va Manuscript approved for publication...Baker and Malcolm J. Rutherford Crystallization of Pinatubo Magma R. Brooks Hanson Hydrodynamics of Magmatic...Perspectives on Late Neoproterozoic Anorogenic Magmatism, Central Laurentian Appalachians 1 Abbey, W.J., 1Tollo...basement rocks of the Blue Ridge anticlinorium in central Virginia. The PWCP is part of a regional Late Neoproterozoic...age. Emplacement of anorogenic plutons in this region has been linked only indirectly to rift-related |
 | | Book |
| 119 120 120 121 121 125 126 126 128 130 131 132 Central Transantarctic Mountains................................................................. 10.3 Central Transantarctic Mountains................................................................. 13.3 Central Transantarctic Mountains.........................16.2.2 Mount Erebus, Summit....................................................... 16.2.3 Mount Erebus............................ 16.3.2 Petrogenesis (Mount Melbourne)..................................... |
 | | Report (volume) |
| fiber sources. New Idria (Coalinga) chrysotile region, California. Riebeckite and crocidolite in the...airways.437 Particles in the Pulmonary-alveolar Region.439 Defense against particles by alveolar phagocytes...component of dust (see discussion of its occurrence in Mount St. Helens ash and in air and water in the Hamersley...in California, including the large serpentinite region of New Idria, near Coalinga; see below. Other layer...sheet in chlorite occupies the interlayer region (i.e., that region occupied by K+ in muscovite). Because |
 | | Book |
| position of 56Fe; and (iv) the abundance peaks in the region past iron at the neutron closed shell positions...well-understood path of contraction to increasing central density and temperature. The contraction is caused...mixing caused by the convection, the entire unstable region evolves essentially chemically homogeneouslyâreplenishing...ing the fuel at 5 Figure 3 Evolution of the central temperature and density in stars of 15M( and 25M(...of burning region (central or shell burning) and depleting the fuel elsewhere in that region at the same |
 | | Book |
| and Makkovik geological provinces and form the central core of Canada's land mass (Fig. 2). These Archean...(Ganderian) origin (van Staal, 2007) and deposits in the central mineral belt of Newfoundland of peri-Laurentia...deposit and associated skams of Quebec and the Mount Pleasant Sn-W porphyry of New Brunswick, and small...producing 82 Ma Huckleberry porphyry Cu-Mo deposit in central British Columbia. Porphyry Mo deposits were the...particularly W, Sn, and In from the East Kemptville and Mount Pleasant deposits, have contributed < I% of total |
