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Fenner differentiation

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Journal Article
Journal: GSA Bulletin
Published: 01 September 1944
GSA Bulletin (1944) 55 (9): 1047–1080.
...RAY E. WILCOX Abstract Certain lavas on Gardiner River in Yellowstone Park, Wyoming, have been cited (Iddings, 1899, p. 430; Fenner, 1934; 1937; 1938) as representing extensive assimilation of solid basaltic material by molten rhyolitic lava at pressures near that of the atmosphere. The writer...
Journal Article
Published: 01 December 1930
American Mineralogist (1930) 15 (12): 539–565.
... that the great variety of igneous rocks is derived from a parental basaltic magma by a differentiation which is brought about by fractional crystallization and the relative movement of crystals and liquid has gained wide recognition. Fenner 2 has led an attack against the theory on the grounds...
Journal Article
Published: 01 May 2001
European Journal of Mineralogy (2001) 13 (3): 467–478.
... technique magmatic crystallization systems closed to oxygen Fenner differentiation trend redox state Fig. 1. Schematic drawing of two evacuated silica-glass ampoules prepared for step-2 experiments. In the ampoule on the right side, the sample is wetting a loop of Pt-wire placed inside an AgPd...
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Journal Article
Published: 01 August 1993
Journal of the Geological Society (1993) 150 (4): 611–624.
.... 3. A (Na20 + KzO)-F (FeO + Fe2Oa)-M(MgO) diagram to show the contrasting Bowen and Fenner trends of magmatic differentiation, ofalkali and of iron enrichment respectively. 1959, 1962; Yoder & Tilley 1962). Such a trend is known as the Fenner trend and is characteristic of large, apparently closed...
Journal Article
Published: 01 January 2007
Micropaleontology (2007) 53 (1-2): 145–159.
... Oligocene to middle early Miocene) are differentiated from those in the North Pacific ( L. reticulatus : middle late Miocene, L. petasus :early late Miocene), suggesting possible the regional environmental differences. 14 03 2007 27 11 2006 © 2007 The Micropaleontology Project, Inc. 2007...
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Journal Article
Published: 01 April 2006
Journal of Micropalaeontology (2006) 25 (1): 3–22.
... of the valve differentiated by slope, and sometimes also with such structures as spines, perpendicular to the valve face ( Fig. 2 g). Ring of puncta: row of perforations at the base of the hypovalve mantle ( Fig. 2 h). Isthmus: a narrow strip of valve centre connecting two larger valve areas ( Fig. 2 c...
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Journal Article
Journal: GSA Bulletin
Published: 01 October 2000
GSA Bulletin (2000) 112 (10): 1594–1620.
..., early investigators assumed that some large fraction of the 1912 ejecta had erupted from Mount Katmai ( Griggs, 1922 ; Fenner, 1923 ), but when Curtis (1968) showed that all the widespread fallout layers thickened toward Novarupta rather than toward Mount Katmai, it became clear that the Katmai...
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Journal Article
Published: 01 April 1995
Earth Sciences History (1995) 14 (1): 47–61.
... analyses that volatiles were from 4 to 8 times more abundant in magmas than Bowen had assumed and thus could not be neglected in considerations of differentiation. 48 Thus, Fenner spoke for many petrologists when he concluded that “volatiles modify the [phase] relations to such a degree that careful...
FIGURES
Journal Article
Published: 01 July 1999
The Journal of Geology (1999) 107 (4): 421–432.
... on older mafic rocks by felsic magmas. Drescher ( 1925 ) and Fenner ( 1926 ), among others, believed that such heterogeneous lithologies could be attributed to strong metasomatic action of one sort or another by intrusive felsic magmas of high volatile content. Nockolds ( 1933 , 1935 , 1941 ) believed...
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Journal Article
Published: 18 September 2020
Bulletin de la Société Géologique de France (2020) 191 (1): 23.
.... Thermogravimetric analysis of Thai amber was performed according to a previously described method ( Ragazzi et al. , 2003 ). The thermogravimetric (Differential Thermo-Gravimetric, DTG) curves were obtained from three samples from Thai amber. According to published data (see Ragazzi et al. , 2003 , 2009...
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Journal Article
Published: 01 November 2010
Russ. Geol. Geophys. (2010) 51 (11): 1157–1166.
... the Chek-Chikan massif lie along the line separating subalkalic and alkaline rocks ( Fig. 2 ). On the variation diagrams ( Fig. 3 ), the composition points of the Chek-Chikan gabbronorites are arranged along the Fenner differentiation trends (i.e., an increase in the degree of differentiation...
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Journal Article
Published: 01 January 2004
Micropaleontology (2004) 50 (1): 59–79.
... is the marginal part of the valve differentiated by a slope perpendicular to the valve face (text-fig. 2Ol ) and possesses structures such as a row of puncta at its base (text-fig. 2Ei ). On the Chaetoceros spores observed by Hargraves (1979) , the hypovalve possessed a sub-marginal flanged mantle that fitted...
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Journal Article
Journal: Geology
Published: 01 November 2005
Geology (2005) 33 (11): 885–888.
... concerns the differentiation of tholeiitic basalt, the most common magma type on Earth erupted at mid-ocean ridges and volcanic islands, that covers vast areas of the continents. Some researchers ( Fenner, 1929 ; Wager and Brown, 1968 ; Brooks and Nielsen, 1978 , 1990 ; Tegner, 1997 ; McBirney...
FIGURES
Journal Article
Published: 01 May 2009
Journal of Micropalaeontology (2009) 28 (1): 45–52.
...) is an alternative method, avoiding the expensive preparations usual for scanning electron microscopy ( Prössl, 1996 ). These methods make the shape and the surface visible and, in special cases, allow the determination of the genus, and occasionally species. Further-more, the use of differential interference...
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Journal Article
Published: 01 January 2008
Reviews in Mineralogy and Geochemistry (2008) 69 (1): 1–8.
... and Busby 2007 ). We undoubtedly have made some progress since Sorby (1863) , Fenner (1926) , Barth (1934) , and many others—but as yet there is still much work to do. This volume and the associated short course were supported by a generous grant from the Department of Energy; their contribution...