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alaskite sediments

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Journal Article
Published: 01 December 1946
Journal of Sedimentary Research (1946) 16 (3): 121–123.
...Raymond Sidwell Abstract Intrusive rock, alaskite, in Capitan Mountain is reduced to fragments under semi-arid conditions and at altitudes above 7,000 feet. Materials at the time of disintegration are arkosic: some accumulate on the alaskite but most are deposited at lower levels in the piedmont...
Journal Article
Published: 01 December 1995
Canadian Journal of Earth Sciences (1995) 32 (12): 2103–2114.
...R. M. Friedman; J. Martignole Abstract U–Pb data provide new constraints on the age of sedimentation, metamorphism, magmatism, and deformation in the Grenville Province of western Quebec. A metapelite, an alaskitic gneiss, and an amphibolite were sampled within an area of 1 km 2 in the Mont-Laurier...
Journal Article
Journal: GSA Bulletin
Published: 01 May 1951
GSA Bulletin (1951) 62 (5): 451–480.
.... Major deformation has resulted in faulting of Precambrian alaskite on the southwest against Paleozoic sediments on the northeast. Major post-Paleozoic igneous activity has involved a dacite flow, a dacite porphyry intrusive, and quartz monzonite in sequence. Minor intrusive activity is represented...
Journal Article
Journal: GSA Bulletin
Published: 01 September 1953
GSA Bulletin (1953) 64 (9): 1049–1098.
...-lit , replaced by and transitional into biotitic quartz-microcline-oligoclase granite, pegmatite, and alaskitic granite. Variants from these fades include garnetiferous and sillimanitic gneiss and migmatite, and tourmaline-bearing pegmatites. The simple assemblage quartz-greenish biotite-oligoclase...
Journal Article
Published: 01 January 1996
Canadian Journal of Earth Sciences (1996) 33 (1): 42–51.
... correspond to the three lithologies of the Ruby Range, i.e., the granitic batholith, the schists, and the alaskite. The sediments from the regional ice lobes are characterized by highly diversified mineralogy and petrography and the relative abundance of minerals from the Saint Elias Mountains, the main...
Journal Article
Published: 01 July 1995
Canadian Journal of Earth Sciences (1995) 32 (7): 959–976.
... establishes an early period of magmatism and sedimentation at about 1280–1240 Ma, probably in a marginal basin setting, and a multistage rhetamorphic evolution in the period between 1100 and 980 Ma, which was probably related to crustal thickening by imbrication during compression and wedging of the terrane...
Journal Article
Journal: Economic Geology
Published: 01 November 1979
Economic Geology (1979) 74 (7): 1577–1599.
... recorded by two concordant K-Ar ages (177 + or - 9 and 180 + or - 9 m.y.; Early Jurassic); (5) cataclastic deformation, possibly related to the rapid uplift of the Klotassin suite during Laberge Group sedimentation (Early Jurassic), which fractured feldspars, strained quartz, arid probably sheared...
Series: GSA Memoirs
Published: 01 January 1939
DOI: 10.1130/MEM7-p1
... an augen gneiss, coarsely porphyritic and less siliceous than the granite of the batholith; it occurs as folded phacolithic sheets, emplaced in large part within what were originally folded aluminous sediments or in metagabbro, and most intimately involved with them. In part the granite is the result...
Journal Article
Journal: Geosphere
Published: 09 March 2023
Geosphere (2023) 19 (3): 782–800.
... in Late Jurassic alaskitic gneiss and mylonite using data from Andrew (2007) . (F) Stereonet of poles to bedding and foliations in Late Jurassic metavolcanic rocks in the easternmost Slate Range, just west of the Quail Mountains, using data from Smith et al. (1968) . (G) Stereonet of poles to bedding...
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Journal Article
Published: 01 February 2012
Russ. Geol. Geophys. (2012) 53 (2): 147–168.
...V.B. Savel’eva; E.P. Bazarova Abstract The Primorskii complex in western Cisbaikalia, which formed in the Early Proterozoic at the postcollisional stage in the Siberian craton evolution, comprises rapakivi granites, equigranular biotitic and leucocratic granites, and alaskites. It is a K-rich...
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Image
Generalized geology of Abaga volcanic-tectonic structure.  1 , Quaternary s...
Published: 01 May 2010
Fig. 9. Generalized geology of Abaga volcanic-tectonic structure. 1 , Quaternary sediments; 2 , Oldynda Formation (Є 1 ol): rhyolite, dacitic rhyolite, dacite, dacitic andesite, and their tuff; 3 , Kurba Formation (Є 1 kb): dolomite, dolomitized limestone, limestone, carbonaceous limestone
Journal Article
Published: 01 February 1988
Journal of the Geological Society (1988) 145 (1): 157–162.
... and fluid inclusions of the Bois Noirs––Limouzat uranium vein, Forez, France Economic Geology 1978 73 1576 610 Cuney M. Preliminary results on the petrology and fluid inclusions of the Rössing uraniferous alaskites Transactions of the Geological Society of South Africa 1980 83 39 45...
Journal Article
Journal: AAPG Bulletin
Published: 01 April 1946
AAPG Bulletin (1946) 30 (4): 514–560.
... consolidated, variable in thickness, and grading vertically and laterally from very coarse- to very fine-grained, or even to organic, sediments. Foraminifera and fish scales are fairly numerous, and diatoms are locally abundant, but larger fossils are extremely rare. The sediments and volcanic rocks belong...
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Journal Article
Published: 01 February 2014
Bulletin de la Société Géologique de France (2014) 185 (2): 75–92.
... accessory minerals. The type example is the Rössing deposit in Namibia whose mineralization is hosted by granitic pegmatite sheets and small plutonic bodies, called alaskites [ Berning et al. , 1976 ; Cuney, 1980 , 1982 ; Cuney and Kyser, 2008 ]. They typically intrude into epicontinental sediments...
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Journal Article
Journal: Geosphere
Published: 06 August 2020
Geosphere (2020) 16 (5): 1208–1224.
... of Pilot Knob Valley ( Fig. 1 ). The bedrock units at the southern end of the Slate Range are: (1) a Middle Jurassic mixed plutonic suite of monzonite, hornblende diorite, leucogranite, and granodiorite; (2) a Late Jurassic alaskite; (3) a Late Jurassic biotite granite; (4) a Late Jurassic meta-andesite...
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Journal Article
Journal: Economic Geology
Published: 12 April 2024
Economic Geology (2024)
... ; Lewis et al., 2012a , in press; Stewart et al., 2016 ). This passive continental margin sedimentation followed late Neoproterozoic rifting in central and eastern Idaho ( Lund, 2008 ; Lund and Aleinikoff, in press; Dail and Zinsser, 2020 ). A complex Mesozoic history of oceanic subduction...
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Journal Article
Published: 01 February 2002
Geochemistry: Exploration, Environment, Analysis (2002) 2 (1): 83–96.
... granites and show a more compact grouping than those from the main pit. Although they have been termed ‘alaskites’ in the literature and in company reports, not all sheeted leucogranites in the Central Zone or in the Rössing area conform to this classification, since monzo- and syenogranites predominate...
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Journal Article
Journal: GSA Bulletin
Published: 01 April 2003
GSA Bulletin (2003) 115 (4): 499–512.
... alaskite-aplite—all rich in large ion lithophile elements (LILEs) and depleted in high field strength elements (HFSEs), and (2) granite of the felsic McAfee Creek series, which has even greater enrichment of LILEs and greater depletion in HFSEs than the Barcroft pluton. Rocks rich in hornblende...
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Journal Article
Published: 01 April 1981
Journal of the Geological Society (1981) 138 (2): 217–220.
... of the conference was termi- nated by a paper by Suttill et al. on Mossbauer spec- tral studies in elucidating the formation of iron sul- phides in recent tidal-flat sediments. The third and final part of the meeting was devoted to field excursions. Carlon led a visit to Wood Mine in the Alderley Edge area...
Series: Short Courses
Published: 01 January 2016
DOI: 10.3749/9780921294726.ch05
EISBN: 978-0-921294-72-6
... of the melts. They have 87 Sr/ 86 Sr ratios lower than 0.705 and 18 O/ 16 O ratios lower than 7 to 8 ( Javoy & Weiss 1987 ). The initial enrichment of the mantle in incompatible elements, and especially in U and Th, through the subduction of an oceanic slab with variable amounts of sediment derived from...
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