Redefinition of the Tectonic Features in Portions of ... · keya bro. blaine ant cop *heeler gre .0...

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Redefinition of the Tectonic Features in Portions of Nebraska and Adjoining Areas New Approaches to Exploration Marvin P. Carlson Nebraska Geological Survey William H. Sydow Nebraska Oil and Gas Conservation Commission

Transcript of Redefinition of the Tectonic Features in Portions of ... · keya bro. blaine ant cop *heeler gre .0...

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Redefinition of the Tectonic Features

in Portions of Nebraska

and Adjoining Areas

New Approaches to Exploration

Marvin P. CarlsonNebraska Geological Survey

William H. SydowNebraska Oil and Gas Conservation Commission

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Structural Features, Region

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Structural Features, Nebraska

1969

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Precambrian Configuration

Carlson, 2000

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Basement Rock Type, Nebraska

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Diagrammatic Section across a

Continental-Margin Subduction System

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Sutures/Terranes

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Regional Uplifts

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Structures/Sutures

1 Hartville Fault (Sims etal, 1981)

2 Cheyenne Belt (Sims etal, 1981)

3 Agate-White River Fault (Swinehart etal, 1985)

4 Skin Gulch Shear (Tweto, 1980)

5 Morrill County High (Sonneberg and Weimer, 1981)

6 Idaho Springs Shear (Tweto, 1980)

7 Wattenberg High (Sonneberg and Weimer, 1981)

8 Los Animas Arch (Sonneberg and Weimer, 1981)

9 Ord Arch (Carlson, 2000)

10 North Platte Arch (Carlson, 2000)

11 Cambridge Arch (Carlson, 2000)

12 Central Kansas Uplift (Cole, 1976)

13 Rush Rib (Cole, 1976)

14 Northern boundary Granite-Rhyolite province

(Van Schmus etal, 1993)

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Regional Terranes

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Revised Structural Features, Nebraska

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Nebraska Fields

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Potential Fields