 | du Bray, Edward A., John, David A., Cousens, Brian L., Hayden, Leslie A., Vikre, Peter G. (2016) Geochemistry, petrologic evolution, and ore deposits of the Miocene Bodie Hills Volcanic Field, California and Nevada. American Mineralogist, 101 (3) 644-677 doi:10.2138/am-2016-5440 | Journal (article/letter/editorial) | | Geological Survey, MS 973, Box 25046, DFC, Lakewood, Colorado 80225, U.S.A. U.S. Geological Survey, MS 901,...border and rise to an elevation of 3112 m at Potato Peak, about 1100 to 1400 m above Bridgeport and Fletcher...from John et al. 2012, 2015). episodic, with two peak periods of eruptive activity, including an early...phenocrysts of plagioclase, pyroxene, and hornblende±biotite. Geophysical data: Regional framework and the...notably Aurora Crater, Aurora Peak, West Brawley Peak, and Potato Peak. The broad gravity low coincident |  | | Report (volume) | | W. in Lyon and Mineral Counties, Nev., and Mono County, Calif. (pl. 1). It includes elements of the Sierra...along East Walker River. Bridgeport, the county seat of Mono County, is in Bridgeport Valley, of the Bodie...with pegmatitic facies crops out south of Aurora Peak, southeast of Aurora, where much of the rock is... 3:: SW\4 sec. II, T. 2N., R. 25 E. 90 ± 2 Biotite This work.' ~ 0 ztTl Volcanic rocks of the..., R. 27 E. Biotite ------------------- ---~ Hornblende ____ .:. ___________ _ Biotite ___________________ |  | Fleck, Robert J., Calvert, Andrew T., Coble, Matthew A., Wooden, Joseph L., Hodges, Kip, Hayden, Leslie A., van Soest, M.C., du Bray, Edward A., John, David A. (2019) Characterization of the rhyolite of Bodie Hills and 40Ar/39Ar intercalibration with Ar mineral standards. Chemical Geology, 525. 282-302 doi:10.1016/j.chemgeo.2019.07.022 | Journal (article/letter/editorial) | | radiogenic yield. Intercalibration with GA1550 biotite from the Dromedary igneous complex (New South Wales...principles” primary K - Ar calibration of GA1550 biotite from the Dromedary igneous complex, New South Wales...irradiations were performed in the GSTR in Denver, Colorado, using techniques modified from those of Dalrymple...MAP216 gas mass spectrometer operated statically in peak-stepping mode with magnetic field control. Analyses...Hills sanidine.a Sample 206 SAN-6.1 SAN-6.2 SAN-7.1 SAN-7.2 SAN-8.1 SAN-8.2 Wtd. mean 19.47 19.39 19 |  | O'Neil, J. R., Silberman, M. L., Fabbi, B. P., Chesterman, C. W. (1973) Stable isotope and chemical relations during mineralization in the Bodie mining district, Mono County, California. Economic Geology, 68 (6) 765-784 doi:10.2113/gsecongeo.68.6.765 | Journal (article/letter/editorial) | | depositschangesfrom of sodicto calcic andesine,hornblende,biotite, and north to south in the district, ore in the...cerargyrite(chlorargyrite)(Wisser, 1960). In the in biotite and poor in hornblendeand vice versa. ISOTOPE...little or no biotite. They do not differ in their overall chemicalcompositionfrom the biotite-bearing extrusive...prefer to call them "dacite" becausethey contain biotite and hornblendephenocrystsand lack pyrox- 769 ...Hill Volcanic UH-4 UH-3E Rocks Biotite dacite extrusive, Potato Peak Formation Porphyritic hornblendeandesireextrusive |  | | Report (volume) | | Highway 49 (Skyway Road) near town of Abel, Cleburne County. Absaroka Supergroup/Volcanic Supergroup U ABRK03...volcanic field, Yellowstone National Park, Park County, Wyo. Academy Church Shale Member (Springer Formation)...W1/2NW1/4NE1/4SE1/4 sec. 1, T. 3 s., R. 2 E., Carter County. Adams Formation ADMS01 1. Holocene 2. Alaska (SE)...Quadrangle, lat 45° N., long 70°50'-55' W., Oxford County. Adamstown Member (Frederick Limestone) U ADMS06...section W of Lime Kiln in Frederick Valley, Frederick County. Named for town of Adamstown. Adobe Town Member |  | | Report (volume) | | 74, Ph miles east of Dutchtown, Cape Girardeau County, Mo. Type section cut by northtrending fault with...stream in NEIA sec. 33, T. 16 N., R. 14 E, Wayne County. Named after village of Abington, about 3 miles...in southeastern part of Jayuya quadrangle. Adam Peak Formation Upper Pennsylvanian to Lower Permian:...dolomitic sandstone, chert, and limestone. West of Adam Peak, where section is most complete, formation divisible...Early Permian. Named for Adam Peak in Osgood Mountains, Humboldt County. Occupies belt about 21f2 miles |  | | Report (volume) | | Enfield Bell mine, Jerritt Canyon district, Elko County, Nevada. � Geology of the Enfield Bell Mine and...and the Jerritt Canyon District, Elko County, Nevada 97 Lower-plate rocks Lower-plate stratigraphy within...Mountains Thrust (Devonian) c 1 , ° L'il a, o Jacks Peak Formation Roberts Mountains Formation Middle ...McAfee Quartzite (Middle Ordovician), and the Jacks Peak Formation (Middle Ordovician). Whereas exposures...exposures of the McAfee Quartzite and the Jacks Peak Formation are limited to the northern most part of the |  | | Book | | into Grant Lake, which is how Reversed Creek and Peak got their names. Proceed five miles and then pull...bottom of a glacial trough—all you see, from Reversed Peak to the north to the face of the Siera to the south...southwest side of Silver Lake. As you drive, notice the peak commanding the horizon straight ahead to the southwest...Horseshoe Canyon at once, and you’ll see how Reversed Peak split the oncoming glacier into two. You'll also...entered Horseshoe Canyon it encountered Reversed Peak, which split it into two glaciers: Reversed Creek |  | | Report (volume) | | KS Alaska Alabama Arkansas Arizona California Colorado Connecticut Dist. of Columbia Delaware Florida...ADAMANT, GRANITE ................ 317* AOAM PEAK,FM 321 ADAM PEAK,FM 377 ADAMS, ARGILLITE 1 11 /AOAMS/FM ADAMS...(TAMIAMI FM) ALVERSON/ANDESITE ALVORO CREEK, FM ALVORO PEAK/BASALT AMALIA,FM ..................... AMALIA,FM...ANCHOR, MBR (REDWALL LS) 337 1 12 /ANCHOR, SILT MBR (SAN PEDRO FM) 211 ANCHOR MINE, TONGUE (MANCOS SH) 211...ANGOLA, SH MBR (WEST FALLS FM) ANGORA PEAK/SS MBR (ASTORIA FM) ANGORA PEAK,SS MBR (ASTORIA FM) 1 25 + ANIMAS |
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