Susan Karl (Former Employee)
Science and Products
Filter Total Items: 22
No results found.
Filter Total Items: 64
Metamorphism within the Chugach accretionary complex on southern Baranof Island, southeastern Alaska Metamorphism within the Chugach accretionary complex on southern Baranof Island, southeastern Alaska
On Baranof Island, southeastern Alaska, we identify four metamorphic events that affect rocks associated with the Chugach accretionary complex. This study focuses on the M1 and M4 metamorphic events. Mesozoic schists, gneisses, and migmatitic gneisses exposed near the Kasnyku pluton on central Baranof Island represent the M1 metamorphic rocks. These rocks underwent amphibolite facies...
Authors
Cathy L. Zumsteg, Glen R. Himmelberg, Susan M. Karl, Peter J. Haeussler
Geologic signature of early Tertiary ridge subduction in Alaska Geologic signature of early Tertiary ridge subduction in Alaska
A mid-Paleocene to early Eocene encounter between an oceanic spreading center and a subduction zone produced a wide range of geologic features in Alaska. The most striking effects are seen in the accretionary prism (Chugach–Prince William terrane), where 61 to 50 Ma near-trench granitic to gabbroic plutons were intruded into accreted trench sediments that had been deposited only a few...
Authors
Dwight Bradley, Timothy M. Kusky, Peter J. Haeussler, Richard J. Goldfarb, Marti L. Miller, Julie A. Dumoulin, Steven W. Nelson, Susan M. Karl
Geophysical signatures used to constrain geologic mapping, narrowing the search for VMS deposits in southeast Alaska Geophysical signatures used to constrain geologic mapping, narrowing the search for VMS deposits in southeast Alaska
No abstract available.
Authors
Jeff Wynn, Jon P. Doucette, Susan M. Karl, Anne E. McCafferty, Bruce D. Smith, Peter Bittenbender
Outcrop structural data from parts of the Petersburg and Sumdum 1:250,000-scale quadrangles, southeastern Alaska Outcrop structural data from parts of the Petersburg and Sumdum 1:250,000-scale quadrangles, southeastern Alaska
This report presents a compilation of 4203 measurements of outcrop structures from part of the Petersburg 1:250,000-scale quadrangle in southeastern Alaska. We collected 1966 measurements, and an additional 2237 unpublished measurements were compiled from field notebooks a from a field mapping effort in the late 1970’s and early 1980’s. These data are listed in spreadsheet and derivative...
Authors
Peter J. Haeussler, Susan M. Karl
Outcrop structural data from Wales Group and adjacent rocks, Dall and Prince of Wales islands, southeastern Alaska Outcrop structural data from Wales Group and adjacent rocks, Dall and Prince of Wales islands, southeastern Alaska
This report presents a compilation of 3224 measurements of outcrop structures from Wales Group and adjacent strata on Dall and Prince of Wales Islands, southeastern Alaska. We collected 2230 measurements, an additional 344 were digitized from the map of Eberlein and others (1983), and an additional 650 come from the map of Herreid and others (1978). These data are listed in Excel...
Authors
Peter J. Haeussler, Susan M. Karl, Keith A. Labay
Preliminary geologic map of northeast Chichagof Island, Alaska Preliminary geologic map of northeast Chichagof Island, Alaska
No abstract available.
Authors
Susan M. Karl
Science and Products
Filter Total Items: 22
No results found.
Filter Total Items: 64
Metamorphism within the Chugach accretionary complex on southern Baranof Island, southeastern Alaska Metamorphism within the Chugach accretionary complex on southern Baranof Island, southeastern Alaska
On Baranof Island, southeastern Alaska, we identify four metamorphic events that affect rocks associated with the Chugach accretionary complex. This study focuses on the M1 and M4 metamorphic events. Mesozoic schists, gneisses, and migmatitic gneisses exposed near the Kasnyku pluton on central Baranof Island represent the M1 metamorphic rocks. These rocks underwent amphibolite facies...
Authors
Cathy L. Zumsteg, Glen R. Himmelberg, Susan M. Karl, Peter J. Haeussler
Geologic signature of early Tertiary ridge subduction in Alaska Geologic signature of early Tertiary ridge subduction in Alaska
A mid-Paleocene to early Eocene encounter between an oceanic spreading center and a subduction zone produced a wide range of geologic features in Alaska. The most striking effects are seen in the accretionary prism (Chugach–Prince William terrane), where 61 to 50 Ma near-trench granitic to gabbroic plutons were intruded into accreted trench sediments that had been deposited only a few...
Authors
Dwight Bradley, Timothy M. Kusky, Peter J. Haeussler, Richard J. Goldfarb, Marti L. Miller, Julie A. Dumoulin, Steven W. Nelson, Susan M. Karl
Geophysical signatures used to constrain geologic mapping, narrowing the search for VMS deposits in southeast Alaska Geophysical signatures used to constrain geologic mapping, narrowing the search for VMS deposits in southeast Alaska
No abstract available.
Authors
Jeff Wynn, Jon P. Doucette, Susan M. Karl, Anne E. McCafferty, Bruce D. Smith, Peter Bittenbender
Outcrop structural data from parts of the Petersburg and Sumdum 1:250,000-scale quadrangles, southeastern Alaska Outcrop structural data from parts of the Petersburg and Sumdum 1:250,000-scale quadrangles, southeastern Alaska
This report presents a compilation of 4203 measurements of outcrop structures from part of the Petersburg 1:250,000-scale quadrangle in southeastern Alaska. We collected 1966 measurements, and an additional 2237 unpublished measurements were compiled from field notebooks a from a field mapping effort in the late 1970’s and early 1980’s. These data are listed in spreadsheet and derivative...
Authors
Peter J. Haeussler, Susan M. Karl
Outcrop structural data from Wales Group and adjacent rocks, Dall and Prince of Wales islands, southeastern Alaska Outcrop structural data from Wales Group and adjacent rocks, Dall and Prince of Wales islands, southeastern Alaska
This report presents a compilation of 3224 measurements of outcrop structures from Wales Group and adjacent strata on Dall and Prince of Wales Islands, southeastern Alaska. We collected 2230 measurements, an additional 344 were digitized from the map of Eberlein and others (1983), and an additional 650 come from the map of Herreid and others (1978). These data are listed in Excel...
Authors
Peter J. Haeussler, Susan M. Karl, Keith A. Labay
Preliminary geologic map of northeast Chichagof Island, Alaska Preliminary geologic map of northeast Chichagof Island, Alaska
No abstract available.
Authors
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