Mule Springs area

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Journal Article
Journal: Economic Geology
Published: 01 April 2003
Economic Geology (2003) 98 (2): 425–463.
... in the area to about 40 tonnes (1.3 Moz). Mining began in December 1996 and continued until August 2000, when operations ceased owing to low Au prices. The mine briefly reopened during the spring of 2002 but closed again in September 2002. Less than half of the premining reserves were mined prior...
FIGURES | View All (19)
Journal Article
Journal: GSA Bulletin
Published: 01 October 2002
GSA Bulletin (2002) 114 (10): 1210–1221.
... in the western Great Basin with those in the eastern Sierra Nevada, particularly the Mount Morrison and Saddlebag Lake pendants. Permian to earliest Triassic deformation in the Tinemaha Reservoir area produced a large north- to northwest-trending, east-vergent, originally recumbent syncline (Mule Spring syncline...
FIGURES | View All (8)
Journal Article
Journal: Economic Geology
Published: 01 December 1985
Economic Geology (1985) 80 (8): 2240–2254.
... the > 13-km volcanic ridge at sites where submarine hot spring brines precipitated and formed massive sulfide lenses within structural depressions near the top of the lower unit rhyolitic lavas and domes which were altered by heated seawater circulation. Postore rhyolite crystal tuffs of the upper unit...
Journal Article
Journal: Geology
Published: 01 June 2003
Geology (2003) 31 (6): 553–556.
... slip on the western Garlock fault. Subsequent sinistral slip on the Owl Lake fault offset the Garlock, creating the now possibly inactive Mule Springs strand of the Garlock fault. Dextral slip on the Brown Mountain fault then locked the Owl Lake fault, forcing the active Leach Lake strand...
Series: Geological Society, London, Special Publications
Published: 01 January 2018
DOI: 10.1144/SP451.6
EISBN: 9781786203328
... flowing from west to the north of the SBHS; and the Langtang River flowing from the Langtang Lirung area in the east to the SBHS, where it mixes with the Bhote Kosi River creating the Trisuli River, the easternmost affluent of the Narayani River. Five major thermal springs are known in the upper Trisuli...
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Journal Article
Journal: Geosphere
Published: 01 October 2008
Geosphere (2008) 4 (5): 888–917.
... and Dixie Valley range between 5.5 and 0.6 cm/yr in uplands with no recharge occurring in most valleys ( Harrill and Hines, 1995 ; Olmsted and Rush, 1987 ). Discharge from the regional groundwater flow systems is manifested by large springs and, in some areas, extensive wetlands ( Thomas et al., 1986...
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Series: Geological Society, London, Special Publications, Geological Society, London, Special Publications
Published: 01 January 2012
DOI: 10.1144/SP362.4
EISBN: 9781862396104
... in metamorphic areas by tapping spring sources, from Tertiary sediments by drilled wells, and in delta or valley areas (flat low-lying regions where most military camps were consequently situated) by use of Norton tube wells (Fig. 12 ). Fig. 11. Near-contemporary sketch section to illustrate main...
FIGURES | View All (17)
... bison, Rocky Mountain elk, Audubon sheep, pronghorn, Rocky Mountain mule deer, and white-tailed deer. Four major bison bone layers, some including bison hair and other soft tissues, with associated stone arrow points and stone flakes (artifacts) and evidence of bone processing are preserved...
Journal Article
Journal: Economic Geology
Published: 01 December 2001
Economic Geology (2001) 96 (8): 1827–1853.
... Snyder), Sleeper, DeLamar, Mule Canyon, Buckhorn, National, Hog Ranch, Ivanhoe, and Jarbidge districts; high-sulfidation gold and porphyry copper-gold deposits are absent. Both high- and low-sulfidation gold-silver and porphyry copper-gold deposits are affiliated with the western andesite assemblage...
FIGURES | View All (13)
Journal Article
Published: 01 May 2007
Environmental and Engineering Geoscience (2007) 13 (2): 99–160.
... founding, given its agreeable climate coupled with the shortage of water; a population boom, with its consequent transportation requirements; and recurring large earthquakes amid the rumble of smaller, stress-relieving tremors. The Los Angeles area is a popular destination, and the historic development...
FIGURES | View All (28)
Journal Article
Journal: Geosphere
Published: 01 August 2014
Geosphere (2014) 10 (4): 732–756.
... in the Resting Spring and Nopah Ranges. The Death Valley region (California and Nevada, USA) has been the centerpiece of many studies of extensional tectonics because the hyperarid climate produces superb bedrock exposure, the area has a rich record of synextensional surficial deposits, and the system...
FIGURES | View All (14)
Series: GSA Field Guide
Published: 01 January 2010
DOI: 10.1130/2010.0017(06)
EISBN: 9780813756172
... a high of 1359 ft at the summit of Thorny Mountain to a low of ~430 ft at Big Spring in the southeastern corner of the area. In the headwaters of the Current River, the crest of the Salem Plateau is typically above 1000 ft and with relatively flat topography except for karstic and epikarstic features...
FIGURES | View All (50)
Series: GSA Field Guide
Published: 01 January 2009
DOI: 10.1130/2009.fld015(15)
EISBN: 9780813756158
... in an area covering ~50,000 km 2 . Our focus is on two distinctly different hydrologic basins that flank Steens Mountain. On the east flank in the rain shadow of the Steens Mountain escarpment lie the hot springs and cold artesian wells of the basin in which the Alvord basin lies. On the northwest flank lie...
Journal Article
Journal: Geosphere
Published: 01 February 2008
Geosphere (2008) 4 (1): 36–74.
... belts with large Eocene gold deposits are exposed in uplands and concealed beneath Neogene basin units in the study area. Also, numerous epithermal hot-spring deposits formed at and near the paleosurface in the Chimney, Ivanhoe, and Carlin basins as those basins were forming. The Neogene geologic...
FIGURES | View All (14)
Journal Article
Journal: AAPG Bulletin
Published: 01 April 1958
AAPG Bulletin (1958) 42 (4): 787–815.
... that the sandstone was deposited toward the close of the Lower Cretaceous as a chain of lenticular, discontinuous offshore bars rimming a low, forested landmass of smaller area than the present Black Hills. Periodic forest fires produced mineral charcoal which was incorporated in the sediments. Deposition...
FIGURES | View All (19)
Journal Article
Journal: Economic Geology
Published: 01 September 2011
Economic Geology (2011) 106 (6): 945–973.
...Mark P. Simpson; Jeffrey L. Mauk Abstract The Waitekauri area of the Hauraki goldfield, New Zealand, contains several adularia-sericite epithermal Au-Ag deposits and prospects. From west to east, the area contains the Sovereign, Jubilee, Scimitar, Scotia, Teutonic, and Jasper Creek deposits...
FIGURES | View All (19)
Journal Article
Published: 01 February 2019
Environmental and Engineering Geoscience (2019) 25 (1): 27–101.
... ). The Pittsburgh area has four distinct seasons. Fall and spring are generally warm and mild, summers are hot and humid with occasional heat waves, and winters are cold and snowy. Based upon 30 year averages (NOAA, 2014), the mean monthly temperatures are warmest in July (72.6°F; 22.6°C) and coldest in January...
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