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St. Vrain

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Journal Article
Published: 01 October 2015
American Mineralogist (2015) 100 (10): 2123–2140.
...Julien Allaz; Markus B. Raschke; Philip M. Persson; Charles R. Stern Abstract An unusual rare earth element (REE) mineralization occurs at a locality known as the “Rusty Gold” within the anorogenic 1.4 Ga Longs Peak-St. Vrain monzo- to syenogranite Silver Plume-type intrusion near Jamestown...
FIGURES | View All (13)
Journal Article
Journal: Geology
Published: 01 October 1985
Geology (1985) 13 (10): 746–747.
Journal Article
Journal: Geology
Published: 01 October 1985
Geology (1985) 13 (10): 747–748.
Journal Article
Journal: Geology
Published: 01 March 1985
Geology (1985) 13 (3): 177–180.
...J. Lawford Anderson; Warren M. Thomas Abstract The two-mica, sillimanite-bearing Silver Plume and St. Vrain batholiths of Colorado are representative of a distinctly peraluminous section of the 1.4 to 1.5 Ga anorogenic province of North America. Indicative of fundamental variations of lower-crust...
Journal Article
Journal: GSA Bulletin
Published: 30 April 1934
GSA Bulletin (1934) 45 (2): 303–332.
...MARGARET FULLER BOOS; C. MAYNARD BOOS Abstract INTRODUCTION The Longs Peak-St. Vrain batholith is a compound granite mass of pre-Cambrian age, which intrudes highly metamorphosed schists and gneisses, mostly of sedimentary origin, in the Front Range of the southern Rocky Mountains in Colorado...
Image
Flood impacts in the North <span class="search-highlight">St</span>. <span class="search-highlight">Vrain</span> Creek catchment, northern Colorado, US...
Published: 01 June 2017
Figure 1. Flood impacts in the North St. Vrain Creek catchment, northern Colorado, USA. A: Catchment location, topography, and study sites with respect to total flood rainfall and landslides. B: Digital elevation model of difference (DoD) between pre-flood and post-flood lidar for the study reach
Image
Field photographs of sheared <span class="search-highlight">St</span>. <span class="search-highlight">Vrain</span> granite within Moose Mountain shear ...
Published: 01 January 2000
Figure 5. Field photographs of sheared St. Vrain granite within Moose Mountain shear zone. A , Megacrystic granite passing into zone of grain-size reduction (S = magmatic foliation; and C = shear plane). B , Ultramylonite zone (M = mylonite; and UM = ultramylonite)). C , L 2 stretching
Image
Photomicrographs of deformed 1.4-Ga <span class="search-highlight">St</span>. <span class="search-highlight">Vrain</span> granite; all samples cut para...
Published: 01 January 2000
Figure 7. Photomicrographs of deformed 1.4-Ga St. Vrain granite; all samples cut parallel to L 2 lineation and perpendicular to foliation. All photos are looking southwest. A , Typical mylonite showing southeast-side-up shear sense, based on asymmetric tails on porphyroclasts. B , Relict
Journal Article
Published: 01 January 2000
Rocky Mountain Geology (2000) 35 (2): 139–162.
...Figure 5. Field photographs of sheared St. Vrain granite within Moose Mountain shear zone. A , Megacrystic granite passing into zone of grain-size reduction (S = magmatic foliation; and C = shear plane). B , Ultramylonite zone (M = mylonite; and UM = ultramylonite)). C , L 2 stretching...
FIGURES | View All (11)
Journal Article
Journal: GSA Bulletin
Published: 01 June 1971
GSA Bulletin (1971) 82 (6): 1635–1656.
... low ages (1000 m.y. or less) limited to a small area within the northeast corner. The area of minimum age is shown to be part of the reduced-age aureole surrounding the 77 m.y. hornblende granodiorite stock at Jamestown that intrudes the Silver Plume Granite of the Longs Peak-St. Vrain batholith...
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Map showing location of tectonic mélange (crosshatching, m) at northeaster...
Published: 01 January 2000
Figure 3. Map showing location of tectonic mélange (crosshatching, m) at northeastern end of Moose Mountain shear zone. Lenses of quartzite (q) and ultramafic rock (u) also are shown. Abbreviations: Xqs = Paleoproterozoic schist; Xam = amphibolite; Xt = 1726 ± 15 Ma trondhjemite; Yg = St. Vrain
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Geochemical plots for the Lincoln granite. Data for samples from the Sherma...
Published: 01 January 2000
Mesoproterozoic Silver Plume-type granites, including two-mica granite from the St. Vrain and Silver Plume batholiths ( Anderson and Thomas, 1985 ).
Image
Flood and post-flood sediment, carbon, and wood flux diagram for the North ...
Published: 01 June 2017
Figure 2. Flood and post-flood sediment, carbon, and wood flux diagram for the North St. Vrain Creek catchment, Colorado, USA. Pie diagrams represent organic carbon as soil, litter, and wood, and illustrated wood jams represent volumes of large wood. Colors of boxes, arrows, and text
Image
Associations between flood sediment aggradation, channel widening, processe...
Published: 01 June 2017
Figure 3. Associations between flood sediment aggradation, channel widening, processes of bend adjustment and avulsion, and potential log jams along North St. Vrain Creek, Colorado, USA. Channel-width change was measured as the difference between pre-flood and post-flood channel corridor (see
Image
A  , Schematic block diagram of northeastern end of Moose Mountain shear zo...
Published: 01 January 2000
Figure 4. A , Schematic block diagram of northeastern end of Moose Mountain shear zone, showing both L 1 and L 2 developed in Paleoproterozoic supracrustal rocks and tectonic mélange, but only L 2 in 1.4-Ga St. Vrain granite. B , Equal-area stereonet showing poles to mylonitic
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Major element chemistry of 1.7- and 1.4-Ga plutons of Colorado and Wyoming....
Published: 01 January 1999
, unpublished); Sherman ( Eggler, 1968 ; Edwards, 1993 ); Virginia Dale ( Vasek, 1995 ), Log Cabin, St., Vrain, and Silver Plume ( Anderson and Thomas, 1985 ); Oak Creek and West McCoy ( Cullers et al., 1993 ); Curecanti ( Hansen, 1964 ); Eolus ( Collier, 1989 ); and San Isabel ( Cullers et al., 1992 ).
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Comparisons among Silver Plume-type granites of Colorado, S-type granites o...
Published: 01 January 1999
Figure 6. Comparisons among Silver Plume-type granites of Colorado, S-type granites of Australia, and Cordilleran peraluminous granites of the western U.S.A. Colorado granites include: St. Vrain and Silver Plume batholiths ( Anderson and Thomas, 1985 ); Oak Creek and West McCoy batholiths
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Sketch map of southeastern Wyoming and northeastern Colorado. Inset shows t...
Published: 01 January 2000
Mountains. Included for reference are geographic place names within the batholith referred to by previous workers. Also shown are Mesoproterozoic intrusions to the northwest (Laramie anorthosite complex, Sybille intrusion, Red Mountain pluton, Maloin Ranch intrusion) and south (Log Cabin, St. Vrain
Journal Article
Journal: Geology
Published: 01 June 2017
Geology (2017) 45 (6): 499–502.
...Figure 1. Flood impacts in the North St. Vrain Creek catchment, northern Colorado, USA. A: Catchment location, topography, and study sites with respect to total flood rainfall and landslides. B: Digital elevation model of difference (DoD) between pre-flood and post-flood lidar for the study reach...
FIGURES
Journal Article
Journal: AAPG Bulletin
Published: 01 April 1957
AAPG Bulletin (1957) 41 (4): 755–756.
... , Vol. 44 , pp. 423 – 59 . Boos , M. F. , and Boos , C. M. , 1934 , “ Granites of the Front Range—the Longs Peak-St Vrain Batholith ,” ibid. , Vol. 45 , pp. 303 – 31 . Gould , C N. , Ohern , D. W. , and Hutchison , L. L. , 1910 , “ Proposed Groups of Pennsylvanian...