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Lookout Schist

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Journal Article
Published: 01 August 1965
American Mineralogist (1965) 50 (7-8): 909-923.
...Eugene B. Gross Abstract In 1956 several unusual uranium deposits were uncovered in the Marshall Pass district, Saguache County, Colorado. Two of the ore bodies occurred in alluvium at an elevation of about 10,000 feet. The largest of these, on the Lookout No. 22 claim, produced about five tons...
Journal Article
Journal: Lithosphere
Published: 01 April 2017
Lithosphere (2017) 9 (2): 265-282.
... are tonalitic and relatively similar in mineralogy. They intrude along a ∼50 km corridor between the Burnt River Schist (Baker terrane) and Weatherby Formation (Izee terrane) that is locally subparallel to the southeast-vergent Connor Creek thrust fault ( Fig. 1B ). The two easternmost plutons (Lookout Mountain...
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Journal Article
Published: 01 April 2009
The Canadian Mineralogist (2009) 47 (2): 315-336.
... to the 2685 Ma Ghost Lake Batholith. The Taylor 2 pegmatite consists of three separate limbs that intruded a wide zone of chlorite schist near the eastern end of an altered ultramafic sill. Most of the beryl and emerald occurs in a “zone of mixing” between the southern and central limbs of the pegmatite...
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Journal Article
Published: 19 July 2006
Canadian Journal of Earth Sciences (2006) 43 (7): 1031-1054.
... bend near Sioux Lookout. To the north, the Miniss River fault is intersected by the east-striking, dextral strike-slip Sydney Lake – Lake St. Joseph fault; the latter merges along strike with the Pashkokogan fault. Restoration of respective displacements indicates that the faults formed sequentially...
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Journal Article
Journal: AAPG Bulletin
Published: 01 February 1943
AAPG Bulletin (1943) 27 (2): 109-219.
... (glaucophane and related schists). Unfortunately, the Franciscan has been made a catch-all for several wholly unrelated formations in southern California and the Sierra Nevada. If many of the correlations proposed were correct the name Franciscan would have neither stratigraphic nor lithologic significance...
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Journal Article
Published: 01 February 2017
Journal of Sedimentary Research (2017) 87 (2): 152-166.
... by subarkoses generally showing a subangular and poorly sorted framework. The deduced source areas are mainly associated with Variscan granitoids, pre-Ordovician schists and paragneisses, and Ordovician metasediments. Glauconite and carbonate grains support intrabasinal inputs. The low degree of sorting...
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Journal Article
Published: 01 April 2000
The Canadian Mineralogist (2000) 38 (2): 287-317.
..., le degré de métamorphisme et l’âge, les ceintures montrant l’association granite – roches vertes conservant en général les secteurs plus anciens métamorphisés au faciès schistes verts et amphibolite inférieur, les sous-provinces à séquences métasédimentaires conservant l’évidence...
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Journal Article
Journal: AAPG Bulletin
Published: 01 January 1966
AAPG Bulletin (1966) 50 (1): 25-71.
...John G. Koch ABSTRACT During Nevadan orogenesis ( ca . 145 m.y. ago), the Galice(?) Formation was regionally metamorphosed (greenschist facies) to phyllites and schists of the Colebrooke Formation, the Pearse Peak Diorite was emplaced, and the Port Orford-Gold Beach area, Oregon, underwent intense...
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Journal Article
Journal: AAPG Bulletin
Published: 01 March 1925
AAPG Bulletin (1925) 9 (2): 341-343.
.... These characteristics make volcanic horizons ideal key beds in many ways, and therefore they appeal to geologists, who are ever on the lookout for a useful tool that can be used in their science. But do they offer such a tool? Are volcanic horizons reliable key beds that provide a workable method of correlation...
Journal Article
Published: 05 October 2007
Canadian Journal of Earth Sciences (2007) 44 (10): 1375-1396.
... are separated by the 90 Ma Excelsior Mountain pluton, but not apparently by a fault (Fig.  11 ). The Tonga Formation and Chiwaukum Schist have been correlated with the lithologically similar Lookout Mountain Formation of Manastash Ridge ( Stout 1964 ), but these rocks are intruded by a 157 Ma pluton ( Miller et...
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Series: GSA Field Guide
Published: 01 January 2016
DOI: 10.1130/2016.0041(08)
EISBN: 9780813756417
... are structurally below the Grandmother Mountain plate in what we term the Cornwall Creek plate (Fig. 3 ). The Prichard Formation in the Marble Creek drainage is characterized by rusty-weathering biotite-muscovite schist that is typically devoid of garnet and aluminosilicate minerals. This unit also includes...
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Journal Article
Journal: Geosphere
Published: 05 December 2019
Geosphere (2019)
... [Perm. Trias.]T Ptt volcanogenic [Perm.]Psv schist/marble [PrecambZs orthogneiss [Early Cret.]Kog granitoid [late Early Late Cret.]Kib continental flood basalt [Miocene]Tc alluvial/landslide/glacial deposits [Quat.]Qu volcaniclastic [Trias. Cret.]KT sv granitoid [Early Cret.]JKg carbonate [Late Trias.]T...
Series: GSA Field Guides
Published: 01 January 2017
DOI: 10.1130/2017.0049(06)
EISBN: 9780813756493
... melange Late Jurassic–Early Cretaceous Metagabbro, metatonalite, silicic gneiss, amphibolite gneiss, quartzite, schist, and ultramafic rock Easton Metamorphic Suite Late Jurassic–Early Cretaceous Phyllite and greenschist with lesser amphibolite, ultramafic rock, and blueschist...
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Journal Article
Published: 01 April 1939
Bulletin of the Seismological Society of America (1939) 29 (2): 299-326.
... Beverly Boulevard to Third Street, paved October, 1930; Laurel Canyon Boulevard from Lookout Mountain to Sunset Boulevard, paved April, 1928. The logs of some test holes dug in this area are recorded in City Engineer's Office Field Books designated U. S. 188, U. S. 189, U. S. 231, and U. S. 306-356...
Journal Article
Journal: AAPG Bulletin
Published: 01 March 1973
AAPG Bulletin (1973) 57 (3): 477-497.
.../sec). Thin Tertiary sedimentary and volcanic sequences on Chatham Island ( Figs. 2 , 3 ) unconformably overlie a basement of Permian-Jurassic quartz-feldspathic schist (Chatham Schist) and associated minor metagraywacke and metavolcanic rocks. The Chatham Schist probably correlates in part...
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Series: GSA Field Guide
Published: 01 January 2009
DOI: 10.1130/2009.fld015(18)
EISBN: 9780813756158
... Volcanics ( Anderson, 1930 ) at lower metamorphic grades to the west, and schist and gneiss of Riggins Group affinity to the east, having larger amounts of plutonic rocks at higher metamorphic grades. From west to east, McClelland et al. (2000) divided the Salmon River suture zone in the Riggins region...
Journal Article
Journal: AAPG Bulletin
Published: 01 December 1957
AAPG Bulletin (1957) 41 (12): 2603-2676.
... intruded by at least six generations of granitic rocks ( Boos, M. F., 1954 , p. 117). About one-third of the exposed Precambrian rocks are metamorphic and more than two-thirds are granitic ( Fig. 3 ). Plate I. Fig. 1. View west from Windy Saddle of Lookout Mountain showing Clear Creek Canyon...
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Journal Article
Published: 13 September 2006
Canadian Journal of Earth Sciences (2006) 43 (7): 995-1030.
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Series: GSA Field Guides
Published: 01 January 2017
DOI: 10.1130/2017.0049(10)
EISBN: 9780813756493
... to the west within the Muir Creek orthogneiss. The presence of these large sedimentary enclaves is unusual, as the western Idaho shear zone is dominantly orthogneiss. The Sage Hen screen is composed of three different rock types: quartzite, pelitic schist, and calc-silicate paragneiss. Quartzite comprises...
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Journal Article
Journal: AAPG Bulletin
Published: 01 November 1965
AAPG Bulletin (1965) 49 (11): 2076-2119.
..., and southern sides of the basin. A general discussion of the lithologic and mineralogic character, age relations, and distribution of rock types of the Precambrian is given by Fitzsimmons (1963) . The Precambrian basement complex of the basin is mainly quartzite, granite, and mica schist. The few deep...
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