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Libby Formation

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Journal Article
Published: 01 October 1992
Rocky Mountain Geology (1992) 29 (2): 119-131.
Journal Article
Journal: PALAIOS
Published: 01 April 1990
PALAIOS (1990) 5 (2): 124-133.
Journal Article
Journal: Geology
Published: 01 July 1988
Geology (1988) 16 (7): 658-661.
...David L. Kidder Abstract Deepening environments in the Proterozoic Libby Formation record a tectonically induced style of sedimentation distinctly different from that of older Belt rocks. Facies associations and sedimentary structures indicate that deposition in the lower Libby Formation occurred...
Journal Article
Published: 24 August 2000
Canadian Journal of Earth Sciences (2000) 37 (9): 1287-1300.
... flow of the Purcell Lava in the Yaak River region; and (3) 1401 ± 6 Ma for a tuff in the very thin transition zone between the Bonner Quartzite and Libby Formation, west of the town of Libby. Combining these ages with those previously published by other workers for ca. 1470-Ma sills in the lower Belt...
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Journal Article
Journal: GSA Bulletin
Published: 01 March 1941
GSA Bulletin (1941) 52 (3): 363-379.
...RUSSELL GIBSON; W. F. JENKS; IAN CAMPBELL Abstract Three formations of the Belt series—Prichard, Wallace, and Striped Peak—can be traced northward from the northeastern part of the Coeur d’Alene district, Idaho, through the Trout Creek quadrangle to the northern part of the Libby quadrangle...
Journal Article
Published: 01 April 1959
American Mineralogist (1959) 44 (3-4): 282-299.
... of the vermiculite deposit at Libby, Montana is discussed. A mechanism is suggested for the formation of hydrobiotite, a regularly interstratified biotite-vermiculite. It is concluded that augite altered to biotite at the time of the intrusion of the syenite dikes, and that the biotite was altered to hydrobiotite...
Journal Article
Published: 01 November 2003
American Mineralogist (2003) 88 (11-12): 1955-1969.
...G.P. Meeker; A.M. Bern; I.K. Brownfield; H.A. Lowers; S.J. Sutley; T.M. Hoefen; J.S. Vance Abstract Thirty samples of amphibole-rich rock from the largest mined vermiculite deposit in the world in the Rainy Creek alkaline-ultramafic complex near Libby, Montana, were collected and analyzed...
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Series: GSA Special Papers
Published: 01 September 2016
DOI: 10.1130/2016.2522(12)
... (COCORP) program. The upper-crustal portion of the resistivity model correlates well with the mapped surface geology and reveals a three-layer resistivity stratigraphy, best expressed beneath the axis of the Libby syncline. Prominent features in the resistivity models are thick conductive horizons...
Journal Article
Published: 01 April 2018
American Mineralogist (2018) 103 (4): 517-549.
...Gregg A. Swayze; Heather A. Lowers; William M. Benzel; Roger N. Clark; Rhonda L. Driscoll; Zac S. Perlman; Todd M. Hoefen; M. Darby Dyar Abstract Commercially produced vermiculite insulation from Libby, Montana, contains trace levels of asbestiform amphibole, which is known to cause asbestos...
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Journal Article
Journal: AAPG Bulletin
Published: 01 January 1984
AAPG Bulletin (1984) 68 (1): 50-73.
...Jan Libby-French ABSTRACT Geologic data from 29 wells in the Baltimore Canyon Trough were released to the public as of 1982, and provide sufficient information for establishing Upper Jurassic through Cenozoic rock-stratigraphic units. Most of the units are lithologically similar to formations...
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Journal Article
Journal: Geology
Published: 01 March 2001
Geology (2001) 29 (3): 283-286.
...She Fa Chen; John W. Libby; John E. Greenfield; Stephen Wyche; Angela Riganti Abstract Regional-scale arcuate structures in the central part of the Archean Yilgarn craton, Western Australia, were generated by impingement of competent granitoid blocks into less competent greenstone belts during...
FIGURES
Journal Article
Journal: AAPG Bulletin
Published: 01 August 1981
AAPG Bulletin (1981) 65 (8): 1476-1484.
...Jan Libby-French Abstract Upper Jurassic gray and red-brown shale, sandstone, and coal are the oldest strata penetrated by the Shell 272-1 and 273-1 wells, located approximately 66 mi (106 km) southeast of Atlantic City, New Jersey, in the northwest part of the Baltimore Canyon Trough. The Lower...
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Journal Article
Journal: AAPG Bulletin
Published: 01 February 1957
AAPG Bulletin (1957) 41 (2): 197-211.
...W. C. Krumbein; W. G. Libby ABSTRACT Vertical variability maps are facies maps that show the areal variation in relative vertical position or placement of rock types within a stratigraphic unit. Conventional facies maps show the areal variation in total or relative content of rock types without...
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Journal Article
Published: 01 December 2008
European Journal of Mineralogy (2008) 20 (6): 1035-1041.
...Mickey E. Gunter; Karen E. Harris; Kristin L. Bunker; Rebecca K. Wyss; Richard J. Lee Abstract We observed interesting amphibole morphologies by transmission electron microscopy (TEM) in air samples collected by the United States Environmental Protection Agency (USEPA) in Libby, Montana. Individual...
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Journal Article
Journal: Geology
Published: 01 May 2004
Geology (2004) 32 (5): 369-372.
...Annette Summers Engel; Libby A. Stern; Philip C. Bennett Abstract The sulfuric acid speleogenesis (SAS) model was introduced in the early 1970s from observations of Lower Kane Cave, Wyoming, and was proposed as a cave-enlargement process due to primarily H 2 S autoxidation to sulfuric acid...
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Journal Article
Journal: GSA Bulletin
Published: 01 December 1963
GSA Bulletin (1963) 74 (12): 1413-1427.
... and to establish mappable units. The older Belt rocks (Prichard through Wallace Formations) were deposited in a trough whose axis trended northwestward, perhaps approximately through Libby, Montana. Subtle facies changes suggest an ancient shore line southwest of the Coeur d'Alene district, Idaho, perhaps near...
Journal Article
Journal: AAPG Bulletin
Published: 01 May 1968
AAPG Bulletin (1968) 52 (5): 858-864.
... of the Wallace and equivalent formations coincides approximately with the center line of an elongate basin trending northwest-southeast across western Montana and northern Idaho ( Fig. 2 ). The maximum thickness of these deposits is 16,500 ft (5,000 m) near Libby, Montana. Thinner equivalent sections in central...
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Journal Article
Journal: Geology
Published: 01 January 2015
Geology (2015) 43 (1): 63-66.
... at Libby, Montana (USA). Fibrous NaFe 3+ -amphiboles, principally winchite and magnesioriebeckite, are found as fracture-fill veins and as replacement of magmatic hornblende in faulted margins of the dominantly subalkaline, metaluminous Miocene Wilson Ridge pluton, Mohave County, Arizona (USA). Here...
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Journal Article
Published: 01 August 2007
Journal of Sedimentary Research (2007) 77 (8): 615-622.
...Jay L. Banner; Amber Guilfoyle; Eric W. James; Libby A. Stern; MaryLynn Musgrove Abstract Variations in growth rates of speleothem calcite have been hypothesized to reflect changes in a range of paleoenvironmental variables, including atmospheric temperature and precipitation, drip-water...
FIGURES
Journal Article
Journal: GSA Bulletin
Published: 01 January 2006
GSA Bulletin (2006) 118 (1-2): 65-81.
...Patrick J. Mickler; Libby A. Stern; Jay L. Banner Abstract The application of stable isotopes in speleothem records requires an understanding of the extent to which speleothem calcite isotopic compositions reflect the compositions of the cave waters from which they precipitate. To test...
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