AN  INTEGRATED PETROLEUM  EVALUATION OF NORTHEASTERN  NEVADA


Introduction Evaluation Prospects


 

 

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Devils Gate Limestone
Guilmette
Nevada Group
Davis Spring
Fenstermaker Wash
Oxyoke Canyon
Beacon Peak Dolomite
Sadler Ranch
Simonson Dolomite
Sevy Dolomite
Lone Mountain Dolomite
Laketown Dolomite
Hanson Creek
Ely Springs Dolomite
Fish Haven Dolomite
Eureka Quartzite
Copenhagen Formation
Pogonip Group
Antelope_Valley_Ls
Ninemile
Goodwin Limestone
Mendha
Windfall
Whipple Cave
Notch Peak Limestone
Corset Spring Shale
Dunderberg Shale
Hamburg Dolomite
Emigrant Springs
Johns Wash Limestone
Lincoln Peak
Secret Canyon Shale
Patterson Pass Shale
Highland Peak
Geddes Limestone
Eldorado Dolomite
Pole Canyon Limestone
Chisholm Shale
Lyndon Limestone
Pioche Shale
Prospect Mountain Quartzite
Gold Hill
McCoy Creek Group
 

 

 

 

 

 

 

LOWER PALEOZOIC
EASTERN CARBONATE ASSEMBLAGE

The Lower Paleozoic Eastern Carbonate Assemblage represents nearly 15,000 feet of shallow marine sediments deposited in the eastern or "Miogeoclinal" portion of the Cordilleran geosyncline. This assemblage has been limited to the upper Precambrian, Cambrian, and Ordovician through Devonian units of Devils Gate Limestone age. The section from the Devonian-Mississippian Pilot Formation through the Permian Phosphoria has been placed in the Upper Paleozoic Carbonate-Detrital Assemblage. In this way, these lower Paleozoic rocks are limited to sediments deposited in a passive continental margin setting, before modification of the depositional framework with initiation of the broad Antler foreland basin, which began receiving sediments during the late Devonian-early Mississippian.

The Lower Paleozoic Eastern Carbonate Assemblage is exposed across nearly the entire study area comprising much of the section in White Pine, Lincoln, and Elko Counties, as well as the autochthon or lower plate of the Roberts Mountains thrust within Lander, Eureka and Nye Counties. This facies consists mainly of thick shelf-deposited limestone and dolomite units containing an abundant shelly fauna, and minor amounts (less than 10 percent) of shale and fine grained carbonate and quartz-rich clastics.


Lower Paleozoic Eastern Carbonate Assemblage

Devonian
    Devils Gate Limestone
    Guilmette Formation
    Nevada Group
    Davis Spring Formation
    Fenstermaker Wash Formation
    Oxyoke Canyon Formation
    Beacon Peak Dolomite
    Sadler Ranch Formation
    Simonson Dolomite
    Sevy Dolomite
Silurian
    Lone Mountain Dolomite
    Laketown Dolomite
Ordovician
    Hanson Creek Formation
    Ely Springs Dolomite
    Fish Haven Dolomite
    Eureka Quartzite
    Copenhagen Formation
    Pogonip Group
    Antelope Valley Limestone
    Ninemile Formation
    Goodwin Limestone
Cambrian
    Mendha Formation
    Windfall Formation
    Whipple Cave Formation
    Notch Peak Limestone
    Corset Spring Shale
    Dunderberg Shale
    Hamburg Dolomite
    Emigrant Springs Formation
    Johns Wash Limestone
    Lincoln Peak Formation
    Secret Canyon Shale
    Patterson Pass Shale
    Highland Peak Formation
    Geddes Limestone
    Eldorado Dolomite
    Pole Canyon Limestone
    Chisholm Shale
    Lyndon Limestone
    Pioche Shale
    Prospect Mountain Quartzite
    Gold Hill Formation
Precambrian
  
McCoy Creek Group


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WESTERN CORDILLERA
Last modified: 09/12/06