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John Day Inlier

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Journal Article
Published: 01 December 1980
Canadian Journal of Earth Sciences (1980) 17 (12): 1603-1608.
...Paul L. Smith Abstract The lithostratigraphic terminology of the type Snowshoe Formation of the John Day inlier is revised. The lower member is correlated with and renamed the Warm Springs Member. The middle and upper members are renamed the Schoolhouse and South Fork Members respectively. A local...
Journal Article
Published: 01 June 1979
Journal of Sedimentary Research (1979) 49 (2): 501-516.
...W. R. Dickinson; K. P. Helmold; J. A. Stein Abstract Mesozoic lithic sandstones in central Oregon were deposited in a complex forearc basin within the eugeosynclinal western part of the Cordillera. The sequence in the John Day inlier of the Blue Mountains province includes about 15,000 m...
Journal Article
Journal: Geology
Published: 01 April 1979
Geology (1979) 7 (4): 166-170.
...William R. Dickinson Abstract The Upper Triassic to Upper Jurassic sequence of the John Day inlier was deposited along the seaward flank of a major forearc basin. The clastic strata mask the buried contact between the coeval Huntington arc terrane on the southeast and an uplifted mélange belt...
Series: GSA Field Guide
Published: 01 January 2009
DOI: 10.1130/2009.fld015(20)
EISBN: 9780813756158
... Regional workers have long speculated on the sources of tuffs in the John Day Formation ( Robinson et al., 1984 , 1990 ) and have suggested that pyroclastic rocks within the formation were vented from now-buried eruptive centers in or marginal to an antecedent Cascade Range...
Journal Article
Published: 01 September 2006
South African Journal of Geology (2006) 109 (3): 411-427.
...Sabine Pawlig; Mamadou Gueye; Ralf Klischies; Stefan Schwarz; Klaus Wemmer; Siegfried Siegesmund Abstract Birimian (Paleoproterozoic) granitoids and associated volcanic and sedimentary rocks from the Kedougou-Kenieba-Inlier (KKI) of Eastern Senegal have been analyzed for their major, trace, REE...
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Journal Article
Published: 01 November 2011
Scottish Journal of Geology (2011) 47 (2): 113-132.
... of World War II, initiated a programme of research on the ‘Lewisian’ inliers aimed at resolving this controversy. John Sutton and Janet Watson fresh from their classic study of the Lewisian rocks of the Caledonian foreland in the Scourie and Laxford areas ( Sutton & Watson 1951 ) worked on the inliers...
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Journal Article
Published: 17 September 2003
Canadian Journal of Earth Sciences (2003) 40 (9): 1171-1189.
...Reginald A. Wilson Abstract The Popelogan Inlier consists mainly of mafic volcanic rocks (lapilli tuffs and massive to amygdaloidal, plagioclase-phyric flows) of the Middle Ordovician Goulette Brook Formation. Pyroclastic rocks include high-MgO–Cr-Ni picritic tuffs (type I) containing, in some...
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Series: Geological Society, London, Special Publications
Published: 01 January 2014
DOI: 10.1144/SP394.9
EISBN: 9781862396708
... to McLaren et al. (2002) , the MPI cooled below c. 500 °C (Ar/Ar hornblende) after the 460–440 Ma intrusion of the British Empire Granite. Based on modelled K–Ar and Ar/Ar hornblende, mica and K-feldspar ages, McLaren et al. (2002) proposed three steps of fast cooling of the whole inlier at c. 430...
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Journal Article
Published: 01 December 2007
South African Journal of Geology (2007) 110 (4): 511-534.
...M. Gueye; S. Siegesmund; K. Wemmer; S. Pawlig; M. Drobe; N. Nolte; P. Layer Abstract The Paleoproterozoic rocks in the Kédougou Kénieba Inlier (KKI) consist of volcanic and volcanosedimentary rocks intruded by granitoids with a wide compositional spectrum. Geochronological data based on single...
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Series: GSA Special Papers
Published: 01 January 2007
DOI: 10.1130/2006.2419(05)
... map and stratigraphic relationships summarized above. Unlike the Toney Butte anticline, the Mitchell anticline shows no evidence for growth during deposition of Cretaceous sedimentary units. Geologic mapping by Oles and Enlows (1971) showed that the Tertiary John Day Formation and Columbia River...
Journal Article
Published: 01 June 2002
The Canadian Mineralogist (2002) 40 (3): 991-992.
... more. In addition, the field geologist must be able to keep a legible notebook, to read accurately topographic maps as well as geological maps of adjacent areas, to judge the weather for the next day’s traverse, to make and break base and fly camps, to cook, to canoe, to ride horses and to load pack...
Series: Geological Society, London, Memoirs
Published: 01 January 2002
DOI: 10.1144/GSL.MEM.2002.025.01.06
EISBN: 9781862394001
...). Previously published Oldroyd (1999 a , p. 20). Fig. 5.7. John Edward Marr crossing a Lakeland beck, 1891.Marr archives, Sedgwick Museum, Cambridge. Photographed by Edmund Garwood. Reproduced by courtesy of the Sedgwick Museum. Fig. 5.6. Sketch of the area of Ash Gill quarry: in pocket...
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Series: Geological Society, London, Memoirs
Published: 01 January 2002
DOI: 10.1144/GSL.MEM.2002.025.01.07
EISBN: 9781862394001
... Tilberthwaite Tuffs Bedded Tuffs 3. Paddy End Rhyolites 20 – 2. Lower Tilberthwaite Tuffs Bedded Tuffs 1. Dow Crag Andesites Mosedale Andesites Fig. 6.1. John Frederick N. Green. Geological Society archives (LDGSL P53/57). Photograph reproduced by courtesy of the Geological Society...
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Journal Article
Journal: AAPG Bulletin
Published: 01 March 2001
AAPG Bulletin (2001) 85 (3): 393-418.
...Mark Cooper; John Weissenberger; Ian Knight; Doug Hostad; Derek Gillespie; Henry Williams; Elliott Burden; Janet Porter-Chaudhry; Don Rae; Elizabeth Clark Abstract The Humber zone is the most external zone of the Appalachian orogen in western Newfoundland. It records multiphase deformation...
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Journal Article
Published: 06 February 2004
Canadian Journal of Earth Sciences (2004) 41 (2): 127-150.
... obtained for the Ten Mile Lake granite indicates for the first time that Labradorian crust could continue into the northern Long Range Inlier of western Newfoundland. Pinwarian activity is indicated by ages of ∼1526–1504, 1500 ± 14, 1467 ± 44, and 1466 ± 8 Ma from granitoid rocks at Rivière St-Paul, West...
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Journal Article
Published: 29 September 2005
Canadian Journal of Earth Sciences (2005) 42 (6): 895-934.
... lithologically and chronologically distinct crustal elements: ( i ) inliers and xenoliths of 4.06–2.80 Ga sialic basement terranes ( Henderson et al. 1982 ; Frith et al. 1986 ; Lambert and van Breemen 1991 ; James and Mortensen 1992 ; Isachsen and Bowring 1997 ; Relf et al. 1994 , 1999 ; Bleeker et al...
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Journal Article
Journal: Economic Geology
Published: 01 December 2016
Economic Geology (2016) 111 (8): 1825-1858.
...Warren C. Day; John F. Slack; Robert A. Ayuso; Cheryl M. Seeger Abstract This paper provides an overview on the genesis of Mesoproterozoic igneous rocks and associated iron oxide ± apatite (IOA) ± rare earth element, iron oxide-copper-gold (IOCG), and iron-rich sedimentary deposits in the St...
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Journal Article
Journal: Geology
Published: 01 March 2003
Geology (2003) 31 (3): 243-246.
...Timm John; Volker Schenk; Karsten Haase; Erik Scherer; Francis Tembo Abstract Precambrian eclogites, metagabbros, and gabbros occur in an ∼200-km-long by 40-km-wide zone in central Zambia. Pressure-temperature ( P - T ) estimates of kyanite-bearing eclogites (kyanite eclogites) throughout the zone...
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Journal Article
Published: 01 November 2003
Geological Magazine (2003) 140 (6): 685-705.
...HAROLDO VIZAN; JOHN N. CARNEY; PETER TURNER; ROBERT A. IXER; MARK TOMASSO; ROBERT P. MULLEN; PAUL CLARKE Abstract Palaeomagnetic studies have been carried out on Neoproterozoic, Cambrian and Ordovician rocks in the Nuneaton inlier, England (52.5° N, 1.5° W). Three magnetic components were...
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Journal Article
Published: 07 March 2017
Geological Magazine (2017) 155 (5): 1150-1174.
...BRANDON L. ALESSIO; MORGAN L. BLADES; GEORGE MURRAY; BENJAMIN THORPE; ALAN S. COLLINS; DAVID E. KELSEY; JOHN FODEN; JUSTIN PAYNE; SALAH AL-KHIRBASH; FRED JOURDAN Abstract – The Omani basement is located spatially distant from the dominantly juvenile Arabian–Nubian Shield (ANS) to its west, and its...
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