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Poldervaart

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Journal Article
Published: 01 April 1970
American Mineralogist (1970) 55 (3-4_Part_2): 591-593.
...Ronald E. Wilcox Abstract Arie Poldervaart was a petrologist. His earliest work and last major contribution dealt with the petrology of basaltic rocks. He began by studying dolerites in South Africa under the tutelage of Frederick Walker. This work, which began in 1939, eventually led...
Series: GSA Memoirs
Published: 01 January 1969
DOI: 10.1130/MEM115-pxi
Journal Article
Journal: GSA Bulletin
Published: 01 September 1965
GSA Bulletin (1965) 76 (9): P125-P132.
Journal Article
Journal: GSA Bulletin
Published: 01 November 1958
GSA Bulletin (1958) 69 (11): 1323-1368.
...RONALD E WILCOX; RONALD E WILCOX; ARIE POLDERVAART; ARIE POLDERVAART Abstract A Precambrian metadolerite dike swarm, emplaced in Cranberry gneiss, extends from Roan Mountain toward Bakersville, North Carolina, but loses its identity in the hornblendic Roan gneiss and schist. Ortho-amphibolites...
Series: GSA Special Papers
Published: 01 January 1955
DOI: 10.1130/SPE62-pv
Series: GSA Special Papers
Published: 01 January 1955
DOI: 10.1130/SPE62-p119
Journal Article
Journal: GSA Bulletin
Published: 01 January 1973
GSA Bulletin (1973) 84 (1): 1-20.
...JAMES G. MOORE; JOHN P. LOCKWOOD Abstract A new descriptive term, comb layering , is proposed to replace the informal term Willow Lake-type layering , first introduced by Poldervaart and Taubeneck (1959) to describe layering in granitoid rocks in which constituent crystals are oriented...
Series: GSA Memoirs
Published: 01 January 1969
DOI: 10.1130/MEM115-p53
... The Beartooth Mountains consist of a Precambrian crystalline core uplifted during the Laramide orogeny. This core has been studied by several groups under the direction of Arie Poldervaart to determine the origin and geologic history of the rocks. All published and unpublished work...
Journal Article
Journal: GSA Bulletin
Published: 01 November 1964
GSA Bulletin (1964) 75 (11): 1093-1116.
... in a biotite trondhjemite unit but are more striking in parts of different intrusions of cordierite trondhjemite. Taubeneck and Poldervaart (1960) defined Willow Lake-type layered rocks as being composed of alternating bands of felsic and mafic constituents in which the minerals are characteristically...
Journal Article
Journal: GSA Bulletin
Published: 01 November 1966
GSA Bulletin (1966) 77 (11): 1277-1292.
...LEONARD H LARSEN; ARIE POLDERVAART; MARTIN KIRCHMAYER Abstract The Beartooth Mountains represent an elongate block of Archean crystalline rocks (metamorphism dated at 2.7 b.y. by Rb-Sr) which was uplifted during the Laramide Revolution. The Lonesome Mountain area in the heart of the range consists...
Journal Article
Published: 01 October 1965
American Mineralogist (1965) 50 (10): 1723-1728.
...Arie Poldervaart; Jack Green Abstract Five new chemical analyses of four submarine basalts are presented. The two rocks from the Pacific are hypersthene-normative alkali basalts, whereas the two from the Atlantic are olivine-normative tholeiites. 2 Present address: Douglas Advanced Research...
Journal Article
Journal: GSA Bulletin
Published: 01 August 1964
GSA Bulletin (1964) 75 (8): 741-744.
...MARTIN PRINZ; ARIE POLDERVAART Abstract Localized, intense shearing of a metadolerite dike has produced a distinctly layered mylonite from originally homogeneous rock. Observations indicate that during mylonitization pyroxenes were more ductile than plagioclase, and that layering resulted from...
Journal Article
Journal: GSA Bulletin
Published: 01 March 1964
GSA Bulletin (1964) 75 (3): 229-232.
...A POLDERVAART Abstract The tetrahedron silica-nepheline-diop-side-olivine is used for chemical definition of alkali basalts and tholeiites in conformity with their petrographic definition. In an earlier paper, the plane separating the two types of basalt was found and an equation given...
Journal Article
Journal: GSA Bulletin
Published: 01 January 1961
GSA Bulletin (1961) 72 (1): 69-92.
...LEONARD H LARSEN; ARIE POLDERVAART Abstract Compton made a detailed study of the Bald Rock batholith, California, and suggested that the tonalites and granodiorites of the rim of the batholith originated through contamination. He believed that trondhjemite magma, represented by rocks in the core...
Journal Article
Journal: GSA Bulletin
Published: 01 September 1960
GSA Bulletin (1960) 71 (9): 1295-1322.
...WILLIAM H TAUBENECK; ARIE POLDERVAART Abstract The Willow Lake intrusion is funnel-shaped with contacts inclined inward at 60°-70° and has a sheetlike appendage to the southwest, inclined northwest at 50°. The pluton lies athwart the southern contact of the Bald Mountain batholith and was emplaced...
Journal Article
Published: 01 December 1959
Journal of Sedimentary Research (1959) 29 (4): 588-595.
...John Imbrie; Arie Poldervaart Abstract A method is described for routine calculation of mineralogical compositions from chemical analyses of sedimentary rocks. Although designed for the particular mineral suites found in the Florena Shale (a mid-continent Permian argillaceous unit containing...
Journal Article
Journal: GSA Bulletin
Published: 01 October 1959
GSA Bulletin (1959) 70 (10): 1395-1398.
...ARIE POLDERVAART; WILLIAM H TAUBENECK Abstract No abstract available DEPARTMENT OF GEOLOGY, COLUMBIA UNIVERSITY, NEW YORK 27, N. Y.; DEPARTMENT OF GEOLOGY, OREGON STATE COLLEGE, CORVALLIS, ORE. Copyright © 1959, The Geological Society of America, Inc. Copyright is not claimed on any...
Journal Article
Journal: GSA Bulletin
Published: 01 December 1958
GSA Bulletin (1958) 69 (12): 1473-1494.
...RATAN N SUKHESWALA; ARIE POLDERVAART Abstract The islands of Bombay, Salsette, and Trombay expose basalts and associated rocks belonging to the Upper Deccan group, probably of Tertiary age. The basalts dip 10°–20°W. throughout the area. Interbedded with the basalts are sediments mainly...
Journal Article
Journal: Economic Geology
Published: 01 December 1957
Economic Geology (1957) 52 (8): 952-971.
...Allen M. Alper; Arie Poldervaart Abstract Zircons have been studied by measurement of lengths and widths of 200 crystals for each sample. Data are analyzed by the reduced major axis method. Ten samples from the Animas stock, emplaced at shallow depth, have zircons with like reduced major axes...
Journal Article
Journal: GSA Bulletin
Published: 01 October 1957
GSA Bulletin (1957) 68 (10): 1225-1262.
...F DONALD ECKELMANN; ARIE POLDERVAART Abstract The Beartooth Mountains form an elongated range with longer axis trending northwest and consist of a core of granitic gneiss flanked by migmatites and metasediments. The Quad Creek area is astride the northeast boundary of granitic gneiss and migmatites...