Susan Karl (Former Employee)
Science and Products
Filter Total Items: 22
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Filter Total Items: 64
Reconnaissance geologic map of the Duncan Canal-Zarembo Island area, southeastern Alaska Reconnaissance geologic map of the Duncan Canal-Zarembo Island area, southeastern Alaska
The geologic map of the Duncan Canal-Zarembo Island area is the result of a multidisciplinary investigation of an area where an airborne geophysical survey was flown in the spring of 1997. The area was chosen for the geophysical survey because of its high mineral potential, a conclusion of the Petersburg Mineral Resource Assessment Project, conducted by the U.S. Geological Survey from...
Authors
Susan M. Karl, Peter J. Haeussler, Anne E. McCafferty
Geologic map of the Seldovia quadrangle, south-central Alaska Geologic map of the Seldovia quadrangle, south-central Alaska
This is a 1:250,000-scale map of the bedrock geology of the Seldovia quadrangle, south-central Alaska. The map area covers the southwestern end of the Kenai Peninsula, including the Kenai Lowlands and Kenai Mountains, on either side of Kachemak Bay. The waters of Cook Inlet cover roughly half of the map area, and a part of the Alaska Peninsula near Iliamna Volcano lies in the extreme...
Authors
Dwight Bradley, Timothy M. Kusky, Peter J. Haeussler, Susan M. Karl, D. Thomas Donley
Late Cretaceous to early Tertiary transtension and strain partitioning in the Chugach Accretionary Complex, SE Alaska Late Cretaceous to early Tertiary transtension and strain partitioning in the Chugach Accretionary Complex, SE Alaska
Shear zones in the Late Cretaceous Sitka Graywacke of the Chugach accretionary complex in southeast Alaska record constrictional finite strains, with maximum principal s tretches plunging shallowly subparallel to strike of the shear zones. Macrostructural analysis indicates the finite strain formed during one deformation event. Microstructural analysis of the shear zones shows that this
Authors
J.S. Davis, Sarah M. Roeske, Susan M. Karl
Field guide to the Mesozoic accretionary complex along Turnagain Arm and Kachemak Bay, south-central Alaska Field guide to the Mesozoic accretionary complex along Turnagain Arm and Kachemak Bay, south-central Alaska
Turnagain Arm, just east of Anchorage, provides a readily accessible, world-class cross section through a Mesozoic accretionary wedge. Nearly continuous exposures along the Seward Highway, the Alaska Railroad, and the shoreline of Turnagain Arm display the two main constituent units of the Chugach terrane: the McHugh Complex and Valdez Group. In this paper we describe seven bedrock...
Authors
Dwight Bradley, Timothy M. Kusky, Susan M. Karl, Peter J. Haeussler
Controls on accretion of flysch and melange belts at convergent margins: Evidence from the Chugach Bay thrust and Iceworm melange, Chugach accretionary wedge, Alaska Controls on accretion of flysch and melange belts at convergent margins: Evidence from the Chugach Bay thrust and Iceworm melange, Chugach accretionary wedge, Alaska
Controls on accretion of flysch and mélange terranes at convergent margins are poorly understood. Southern Alaska's Chugach terrane forms the outboard accretionary margin of the Wrangellia composite terrane, and consists of two major lithotectonic units, including Triassic-Cretaceous mélange of the McHugh Complex and Late Cretaceous flysch of the Valdez Group. The contact between the...
Authors
Timothy M. Kusky, Dwight Bradley, Peter J. Haeussler, Susan M. Karl
Geology of northern Alaska Geology of northern Alaska
No abstract available.
Authors
Thomas E. Moore, Wes K. Wallace, Kenneth J. Bird, Susan M. Karl, Charles G. Mull, John T. Dillon
Map and table of mineral deposits on Annette Island, Alaska Map and table of mineral deposits on Annette Island, Alaska
No abstract available.
Authors
Susan M. Karl
Stratigraphy, structure, and geologic synthesis of northern Alaska Stratigraphy, structure, and geologic synthesis of northern Alaska
No abstract available.
Authors
Thomas E. Moore, W. K. Wallace, K. J. Bird, Susan M. Karl, C. G. Mull, J. T. Dillon
Mineral resource assessment of the Annette Islands Reserve, Southeast Alaska Mineral resource assessment of the Annette Islands Reserve, Southeast Alaska
No abstract available
Authors
R. J. Horton, Susan M. Karl, Andrew Griscom, C. D. Taylor, K. R. Bond, R. Michael Senterfit
A northern Cordilleran ocean-continent transect: Sitka Sound, Alaska, to Atlin Lake, British Columbia A northern Cordilleran ocean-continent transect: Sitka Sound, Alaska, to Atlin Lake, British Columbia
The 155 km wide, 310 km long Sitka Sound – Atlin Lake continent–ocean transect includes almost all the geologic, geophysical, and geotectonic elements of the Canadian Cordillera. It crosses the Chugach, Wrangellia, Alexander, Stikine, and Cache Creek terranes, the Gravina and Laberge overlap assemblages, intrusive and metamorphic belts, and neotectonic faults that bound major blocks...
Authors
D. A. Brew, Susan M. Karl, D.F. Barnes, R.C. Jachens, A. B. Ford, R. Horner
Preliminary geologic map of the Baird Mountains and part of the Selawik quadrangles, Alaska Preliminary geologic map of the Baird Mountains and part of the Selawik quadrangles, Alaska
No abstract available.
Authors
Susan M. Karl, Julie A. Dumoulin, Inyo Ellersieck, A. G. Harris, J.M. Schmidt
A reexamination of the contacts and other features of the Gravina Belt, southeastern Alaska; supplemental data A reexamination of the contacts and other features of the Gravina Belt, southeastern Alaska; supplemental data
No abstract available.
Authors
David A. Brew, Susan M. Karl
Science and Products
Filter Total Items: 22
No results found.
Filter Total Items: 64
Reconnaissance geologic map of the Duncan Canal-Zarembo Island area, southeastern Alaska Reconnaissance geologic map of the Duncan Canal-Zarembo Island area, southeastern Alaska
The geologic map of the Duncan Canal-Zarembo Island area is the result of a multidisciplinary investigation of an area where an airborne geophysical survey was flown in the spring of 1997. The area was chosen for the geophysical survey because of its high mineral potential, a conclusion of the Petersburg Mineral Resource Assessment Project, conducted by the U.S. Geological Survey from...
Authors
Susan M. Karl, Peter J. Haeussler, Anne E. McCafferty
Geologic map of the Seldovia quadrangle, south-central Alaska Geologic map of the Seldovia quadrangle, south-central Alaska
This is a 1:250,000-scale map of the bedrock geology of the Seldovia quadrangle, south-central Alaska. The map area covers the southwestern end of the Kenai Peninsula, including the Kenai Lowlands and Kenai Mountains, on either side of Kachemak Bay. The waters of Cook Inlet cover roughly half of the map area, and a part of the Alaska Peninsula near Iliamna Volcano lies in the extreme...
Authors
Dwight Bradley, Timothy M. Kusky, Peter J. Haeussler, Susan M. Karl, D. Thomas Donley
Late Cretaceous to early Tertiary transtension and strain partitioning in the Chugach Accretionary Complex, SE Alaska Late Cretaceous to early Tertiary transtension and strain partitioning in the Chugach Accretionary Complex, SE Alaska
Shear zones in the Late Cretaceous Sitka Graywacke of the Chugach accretionary complex in southeast Alaska record constrictional finite strains, with maximum principal s tretches plunging shallowly subparallel to strike of the shear zones. Macrostructural analysis indicates the finite strain formed during one deformation event. Microstructural analysis of the shear zones shows that this
Authors
J.S. Davis, Sarah M. Roeske, Susan M. Karl
Field guide to the Mesozoic accretionary complex along Turnagain Arm and Kachemak Bay, south-central Alaska Field guide to the Mesozoic accretionary complex along Turnagain Arm and Kachemak Bay, south-central Alaska
Turnagain Arm, just east of Anchorage, provides a readily accessible, world-class cross section through a Mesozoic accretionary wedge. Nearly continuous exposures along the Seward Highway, the Alaska Railroad, and the shoreline of Turnagain Arm display the two main constituent units of the Chugach terrane: the McHugh Complex and Valdez Group. In this paper we describe seven bedrock...
Authors
Dwight Bradley, Timothy M. Kusky, Susan M. Karl, Peter J. Haeussler
Controls on accretion of flysch and melange belts at convergent margins: Evidence from the Chugach Bay thrust and Iceworm melange, Chugach accretionary wedge, Alaska Controls on accretion of flysch and melange belts at convergent margins: Evidence from the Chugach Bay thrust and Iceworm melange, Chugach accretionary wedge, Alaska
Controls on accretion of flysch and mélange terranes at convergent margins are poorly understood. Southern Alaska's Chugach terrane forms the outboard accretionary margin of the Wrangellia composite terrane, and consists of two major lithotectonic units, including Triassic-Cretaceous mélange of the McHugh Complex and Late Cretaceous flysch of the Valdez Group. The contact between the...
Authors
Timothy M. Kusky, Dwight Bradley, Peter J. Haeussler, Susan M. Karl
Geology of northern Alaska Geology of northern Alaska
No abstract available.
Authors
Thomas E. Moore, Wes K. Wallace, Kenneth J. Bird, Susan M. Karl, Charles G. Mull, John T. Dillon
Map and table of mineral deposits on Annette Island, Alaska Map and table of mineral deposits on Annette Island, Alaska
No abstract available.
Authors
Susan M. Karl
Stratigraphy, structure, and geologic synthesis of northern Alaska Stratigraphy, structure, and geologic synthesis of northern Alaska
No abstract available.
Authors
Thomas E. Moore, W. K. Wallace, K. J. Bird, Susan M. Karl, C. G. Mull, J. T. Dillon
Mineral resource assessment of the Annette Islands Reserve, Southeast Alaska Mineral resource assessment of the Annette Islands Reserve, Southeast Alaska
No abstract available
Authors
R. J. Horton, Susan M. Karl, Andrew Griscom, C. D. Taylor, K. R. Bond, R. Michael Senterfit
A northern Cordilleran ocean-continent transect: Sitka Sound, Alaska, to Atlin Lake, British Columbia A northern Cordilleran ocean-continent transect: Sitka Sound, Alaska, to Atlin Lake, British Columbia
The 155 km wide, 310 km long Sitka Sound – Atlin Lake continent–ocean transect includes almost all the geologic, geophysical, and geotectonic elements of the Canadian Cordillera. It crosses the Chugach, Wrangellia, Alexander, Stikine, and Cache Creek terranes, the Gravina and Laberge overlap assemblages, intrusive and metamorphic belts, and neotectonic faults that bound major blocks...
Authors
D. A. Brew, Susan M. Karl, D.F. Barnes, R.C. Jachens, A. B. Ford, R. Horner
Preliminary geologic map of the Baird Mountains and part of the Selawik quadrangles, Alaska Preliminary geologic map of the Baird Mountains and part of the Selawik quadrangles, Alaska
No abstract available.
Authors
Susan M. Karl, Julie A. Dumoulin, Inyo Ellersieck, A. G. Harris, J.M. Schmidt
A reexamination of the contacts and other features of the Gravina Belt, southeastern Alaska; supplemental data A reexamination of the contacts and other features of the Gravina Belt, southeastern Alaska; supplemental data
No abstract available.
Authors
David A. Brew, Susan M. Karl
*Disclaimer: Listing outside positions with professional scientific organizations on this Staff Profile are for informational purposes only and do not constitute an endorsement of those professional scientific organizations or their activities by the USGS, Department of the Interior, or U.S. Government