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| Republic of Germany, Treland, The Netherlands, Switzerland, United Kingdom MER 1. de la Gj DE BARENTS...Republic of Germany, Ireland, the Netherlands, Switzerland, United Kingdom @Âź Denmark, Finland, Iceland...Republic of Germany, Ireland, The Netherlands, Switzerland, United Kingdom Published in cooperation with... ee oe TERTIARY BEDS OF THE INN VALLEY IN THE AREA OF KUFSTEIN-WORGL ....... THE MOLASSE ZONE BETWEEN...BETWEEN THE RIVERS SALZACH AND INN AND THE AREA PADI OAde2LED eesee oe Re toss one ee Cer ek Pe an tee Ce |
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| descriptions of the Kola peninsula, including this area have been published in Russian, but they are not...development of the area. --M. Russell. *** CONTENTS Page 148 Introduction Area of Investigation Imandra...reasons, the boundaries of the proposed exploration area were changed. In connection with prospecting for...of Lake Imandra. Separate routes were run in the area of the town of Upolakshi and of the Peschanaya River...explorations of the Niva River valley and, mainly, in the area of the projected hydroelectric plant. The chief |
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| polydeformed nature of banded gneiss that comprises a part of the Godhra Granite and Gneiss in the southern portion...folding in the gneiss lying in the vicinity of Devgadh Bariya town is worked out. The banded gneiss occurs as...granite. Therefore, it is suggested that the banded gneiss of the region is older than Godhra Granite. Microstructures...fabric of the gneiss and granite along a south-to-north traverse within the study area is documented...Granite are discussed. Key words: Deformation, gneiss, granite, Aravalli Mountain Belt, India. Introduction |
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| suite of rocks previously mapped as the Colbeck Gneiss is shown to be composite in age and origin, consisting...orthogneiss that are intruded by granitic gneiss and charnockitic gneiss. An (7) Archaean granulite facies Sl...pseudotachylite zones is the last deformation event in the area. Introduction High-grade gneisses forming the... sequence of the ductile thrusting of Archaean gneiss westward toward the stable Archaean Napier Complex...Stillwell Gneiss (Trail, 1970; Clarke, 1988 ). Whereas felsic orthogneisses within the Stillwell Gneiss have |
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| GEOLOGICAL EVENTS IN THE BASEMENT COMPLEX OF THE IBADAN AREA, WESTERN NIGERIA KEVIN BURKE, S.J. FREETH and NORMAN...geological events in the Basement Complex of the Ibadan area, Western Nigeria. Precambrian Res., 3: 537--545...general, and in the Ibadan area in particular, is composed primarily of a banded gneiss in which hornblende-biotite...rich bands alternate with quartz-oligoclase rich bands. The banded gneiss, which originated as part of...sedimentary sequence, contains large lenses of granite gneiss and thin intercolated layers of quartzite and amphibolite |
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| intergrowth develops as a result of the constriction of quartz during its recrystallization and inclusion in an...growth directions of quartz in the form of rods with a relatively small surface area (i.e. with circular...and myrmekite-like intergrowths in the Constant Gneiss are described in relation to their particular origin...proposed mechanism of constriction of pre-existing quartz. ONE feature o f myrmekite that requires explanation...f o r m of the quartz. A possible mechanism is the constriction of pre-existing quartz during its recrystallization |
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| Netherlands 167 GEOCHEMISTRY OF THE ILESHA GRANITE GNEISS IN THE BASEMENT COMPLEX OF SOUTHWESTERN NIGERIA...A.A., 1982. Geochemistry of the Ilesha granite gneiss m the basement complex of southwestern Nigeria...Ilesha granite gneiss comprises a varied series ranging from porphyroblastic alkali gneiss and granitic...granitic gneiss to banded and strongly foliated melanocratic rocks. Deformation is intense and the dominant structural...differences in the petrographic character of the outcrops. SiO2, Na20 , K20 and related trace elements, |
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| metamorphism of the metapelites in the Rantasalmi-Sulkava area, southeastern Finland by Kalevi Korsman Geologinen...METAMORPHIS M OF THE METAPELITES I THE RANTASALMI-SULKAVA AREA, SOUTHEASTER FINLA D BY KALEVI KORSMAN WIT H...of tbe- metapelites in tbe Rantasalmi - Sulkava area, soutbeastern Finland. Geological Surve.J' of Finland...46 figures, 12 ta bles. Tbe Rantasalmi - Sulkava area is located witbin tbe Precambrian scbist belt of...garnet. The grade of metamorphism increases in the area from north to south . Progressive metamorphism has |
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| au) ABSTRACT Upper amphibolite facies felsic gneiss from Broken Hill records the metatexite to schlieren...modelling; pseudosection. Mineral abbreviations: q, quartz; g, garnet; sill, sillimanite; cd, cordierite;...production, in a unit of plagioclase-rich felsic gneiss. REGIONAL SETTING The Broken Hill block of western...metasedimentary rocks in the Southern Cross Mine area, where the diatexites occur. D1 produced locally...resulted in large interference patterns across the area involving downward-facing F2 folds (Hobbs et al |
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| the first phase of Caledonian deformation in the area, thus they are considered to be part of a pre-Caledonian...occur but are of minor importance. Throughout the area D2 structures are dominant and the mineral assemblages...rocks occur at three separate localities within the area (Fig. 1): At Erris Head in the extreme north of...the bulk of the Mullet, and on the mainland in the area around Doolough. Exposure, particularly inland,...DESCRIPTION AND STRUCTURAL SEQUENCE Within the central area of the Mullet Peninsula from Scotchport south to |
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| between myrmekite and albite in a quartzofeldspathic gneiss from Broken Hill, New South Wales EVAN R. PHILLIPS...the morphology and spatial distribution of these quartz-plagioclase intergrowths, e.g. the bulbous habit...myrmekite (An~0_ls) that passes out to a margin of quartz-free albite set next to potash feldspar (fig. I)...(t973, P- I94) have drawn attention to free from quartz vermicules(right-top). The adja- grain boundary...similar texture has been seen in the 'lower granitic gneiss' outcropping for some 2 to Io km north-east of |
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| used to establish the former extent of the older gneiss group (the Am~soq gneisses). This, together with...establish a model for the plutonic evolution o f the area. There is no need to invoke large-scale mantle convection...very ancient rocks are preserved and the larger area to th e south and east in which y o u n g e r Archaean...Association, Amftsoq gneiss and Ameralik dykes Am~soq gneisses occur in extensive outcrops in the western part...between Aml"tsoq and NQk gneiss suites. The field identification o f Am~soq gneiss is still based on the |
 | Lajoinie, M.F., Lanfranchini, M.E., Recio, C., Sial, A.N., Cingolani, C.A., BalliviĂĄn Justiniano, C.A., Etcheverry, R.O. (2019) The Lomagundi-Jatuli carbon isotopic event recorded in the marble of the Tandilia System basement, RĂo de la Plata Craton, Argentina. Precambrian Research, 326. 447-461 doi:10.1016/j.precamres.2018.03.012 | Journal (article/letter/editorial) |
| marble of the San Miguel area. The calcite-diopside marble, hosted by biotite gneiss and intruded by 2.12...in the Fennoscandian Shield (Fig. 1; Norway, Switzerland, and Finland) by Baker and Fallick (1989), Karhu...Y analyses of basement marble of the San Miguel area, Tandilia System (Argentina), in order to stablish...with the Lomagundi-Jatuli isotopic event. other outcrops from the South African cratons (Schidlowski et...Santos et al., 2017) (Fig. 2b). The southernmost outcrops of the RPC are exposed in 2 Precambrian Research |
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| Ass., 84 (3),273-282. Four previously unmapped outcrops of Lewisian gneisses occur in Fannich Forest,...Forest has revealed four previously unrecorded outcrops of Lewisian rocks (Fig. 1) which resemble other...compositionally related to the Lewisian. Two recently mapped outcrops are in western Fannich, and two are south of Loch...these rocks and describes them as 'a granitoid gneiss ... well seen on the eastern slopes of Beinn nan...west several distinct outcrops of a similar rock occur ... resembling the acid gneiss (Lewisian) of the Fannich |
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| Figure 1. Simplified geologic map of the Riegelsville area after Drake and others (196?) showing location of...between Cambrian Leithsville Formation and Middle gneiss at 311 feet. Figure 6. Diagramatic section of...Formation, Hardyston Quartzite and Middle Proterozoic gneiss at 731 to 739 feet. Heavy lines denote faults of...Roads penetrated through Triassic strata down into gneiss and phyllonite of the footwall at a depth of approximately...Figure 1. Simplified geologic map of the Riegelsville area after Drake and others (196?) showing location of |
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| versus Bowring and Williams, 1999) and the Itsaq Gneiss Complex (formerly the AmĂźtsoq gneisses) of West...arisen over early Archaean gneisses of the Anshan area (N.E. China) with the Wu et al. (2008) paper on...Cratonâ Wu et al. (2008) suggest that some Anshan area rocks previously interpreted to be entirely âŒ3800...geologyâimportance of deformed injection migmatites The Archean gneiss complex at Anshan displays a complex history of...interpret old trondhjemitic gneisses in the Anshan area as âŒ3300 Ma trondhjemites with copious âŒ3800 Ma |
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| containing kyanite, may have resulted from burial of the area under the superincumbent load of the Ross-shire...acid intrusives form by far the greater surface area of the Carn Chuinneag mass and all of the smaller...abundant orthoclase phenocrysts in a matrix of quartz, potash and plagioclase feldspar and biotite. In...CHUINNEAG-INCHBAE COMPLEX MOINE I RIEBECKITE GNEISS _ GLENFINNAN DIVISION [~] mainly pelitic MEDIUM...Geological Survey's 'fine-grained biotite granite gneiss without many large feldspars' (Div. 2 of Peach |
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| LIST OF ILLUSTRATIfNS Plate 1« Geologic nap of the area between Monrovia and Buehe»aa« (in baek) Plate 2...sedimentary recks* «..« « 10 Figure 1. Map showing outcrops of VEdina Sandstone* " .,..,.. 6 Figure 2,...been recognized near the coast of Liberia in the area between Monrovia and Buchanan; geophysical evidence...unpublished report to the government of Liberia. The area near Little Bassa and Buchanan was investigated...nor determined relative age between them. All outcrops indicated on their map were re-examined daring |
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| Fine. 12.50 MAGNETITE. Vasko. Hungary. Xld. w. Quartz & S,derite. 3x2x l 1 2 .... 3.00 LEAD, Langban...ITE, Cornwall. In fine large rhombic xis. on xld. Quartz. 3x3 ... . 2 .50 BISMUTHINITE , Bolivia. Bright..., Kapn ik. W EIi x d. !Cce Wheel Orel w . xld. Quartz . 3x2 SIDER ITE Corn"''.:tll . Xld . w. colorlf~"'...TOURMALINE, Newry. Me. Port io11 of large pink xi. in Quartz . 3x2x2 .. 2 .50 APATITE. Ehrenfrieder,;dorf Lilac............................ A DESCRIPTION OF THE QUARTZ MINERALS FOUND AT BAYARD, NEBR. By Rit-hard S. |
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| Mineral Resources of the Fort Piute Wilderness Study Area, San Bernardino County, California U.S. GEOLOGICAL...Mineral Resources of the Fort Piute Wilderness Study Area, San Bernardino County, California By JANE E. NIELSON...STUDY AREAS: EASTERN CALIFORNIA DESERT CONSERVATION AREA, CALIFORNIA DEPARTMENT OF THE INTERIOR DONALD...Mineral resources of the Fort Piute Wilderness Study Area, San Bernardino County, California. U.S. Geological...Fort Piute Wilderness Study Area (CDCA-267), California Desert Conservation Area, San Bernardino County, |
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| some similar gneisses developed in the Hutchison area to the north. 2. THE SLEAFORD BAY SECTION. To the...aplitic gneiss, di = diopside rock, ms = mica schist, f = ironstone band, ggn = garnet graphite gneiss, hr...hr = hornblende schist, gn = garnet gneiss, y = ? kaolinized schists with pegmatite veins. direction...granite and pegmatite, and by veins of pegmatite and quartz, and composite rocks have in some cases thus arisen...reveals an essential distinction. A bed of garnet gneiss with a well-developed parallel banding is present |
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| includes the Vioolsdrif Suite, represented by outcrops of deformed leucogranite, adamellite, granodiorite...(e.g. Eendoorn gneiss, megacrysts >10 cm) to fine even-grained (e.g. some Kabis gneiss). The megacrysts...adjacent terranes in the Namaqua mobile belt. The study area (Figure 1) is composed of amphibolite-grade and...xenolithic remnants floating in a great granite-gneiss massif (Gevers et al., 1937); the constituent intrusives...the aid of collective terms such as pink and grey gneiss (e.g. the 1:125 000 geological maps 2817DVioolsdrif |
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| WESTERN METAMORPttIC COMPLEX A kyanite-garnet-gneiss was collected from the median moraine of the NordenskiSld...NordenskiSld Glacier. Under the microscope, this gneiss is a coarse-grained rock with porphyroblastic crystals...interior region rich in inclusions, especially of quartz, rutile, biotite, tourmaline, and magnetite. The...occurs interstitially between the large xenoblastic quartz crystals which give undulatory extinction. Muscovite...There can be little doubt that the genesis of this gneiss is connected with the regional metamorphism of |
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| . . . . . . . . . . . . . . . . . . . 10 A. Quartz and other silica minerals . . . . . . . . . . ...non-metallic minerals that can be seen and studied in outcrops, quarries or rock-dumps within the province. Although...Maps A to M (though not restricted to roadside outcrops) show some areas between the TransTrans Canada...E Winnipeg F Gypsumville area 95 G Dawson Bay 96 H Flin Flon area 97 Iskwasum Lake 98 Reed.... . . . . . . . . . . . . 106 R Nelson House area ..âą........................................... |
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| recorded in uranium deposits in the Beaverlodge area, northern Saskatchewan, Canada S. Dieng â , K. Kyser...minerals in uranium deposits in the Beaverlodge area, Northwestern Saskatchewan, Canada, reveal six periods...regional thermotectonic events. The Beaverlodge area in the central-southern Archean Rae province, Northwestern...setting of uranium mineralization in the Beaverlodge area has been a contentious issue. Although the spatial...Geologic setting 2.1. General geology The Beaverlodge area is part of the Churchill province, which is located |
Gneiss outcrops, Ofenhorn, Albrunhorn - Turbhorn area, Binn, Goms, Valais, Switzerland