Cal Ruleman
Research Geologist constructing geologic maps and performing research related to our Nation's natural resources and hazards
Current Research:
Neotectonics and Structural Evolution of Intermountain Western North America
Geomorphic and Hydrologic Evolution of Plio-Pleistocene Fluvial Systems and Chronostratigraphy of Western North America
Geomorphology and Chronology of North American Pleistocene Glacial-Periglacial Systems
Geologic and Geomorphic History of Contaminants in Western North American River Systems
Professional Experience
2007-Present: Research Geologist, USGS
2004-2007: Geologist, USGS contractor and private sector
2002-2004: U.S. Peace Corp Volunteer, Suriname, South America
2000-2002: USGS student intern
Education and Certifications
1999: B.A., University of Montana, Missoula
2002: M.S., Montana State University, Bozeman
Affiliations and Memberships*
1996-Present: Geological Society of America
2000-Present: Colorado Scientific Society
Science and Products
Filter Total Items: 13
Geologic map of the Clark Peak quadrangle, Jackson and Larimer Counties, Colorado Geologic map of the Clark Peak quadrangle, Jackson and Larimer Counties, Colorado
The Clark Peak quadrangle encompasses the southern end of the Medicine Bow Mountains and the northernmost end of the Mummy Range. The Continental Divide traverses the map area and Highway 14 cross the Divide at Cameron Pass, in the southeastern corner of the map. Approximately the eastern half of the map, and a few areas to the west, are underlain by Early Proterozoic plutonic and...
Filter Total Items: 16
Neotectonic inversion of the Hindu Kush-Pamir mountain region Neotectonic inversion of the Hindu Kush-Pamir mountain region
The Hindu Kush-Pamir region of southern Asia is one of Earth's most rapidly deforming regions and it is poorly understood. This study develops a kinematic model based on active faulting in this part of the Trans-Himalayan orogenic belt. Previous studies have described north-verging thrust faults and some strike-slip faults, reflected in the northward-convex geomorphologic and structural...
Authors
C.A. Ruleman
2007 Rocky Mountain section Friends of the Pleistocene field trip - Quaternary geology of the San Luis basin of Colorado and New Mexico, September 7-9, 2007 2007 Rocky Mountain section Friends of the Pleistocene field trip - Quaternary geology of the San Luis basin of Colorado and New Mexico, September 7-9, 2007
Prologue Welcome to the 2007 Rocky Mountain Cell Friends of the Pleistocene Field Trip, which will concentrate on the Quaternary geology of the San Luis Basin of Colorado and New Mexico. To our best knowledge, Friends of the Pleistocene (FOP) has never run a trip through the San Luis Basin, although former trips in the region reviewed the 'Northern Rio Grande rift' in 1987 and the...
Authors
Michael N. Machette, Mary-Margaret Coates, Margo L. Johnson
Map and Database of Probable and Possible Quaternary Faults in Afghanistan Map and Database of Probable and Possible Quaternary Faults in Afghanistan
The U.S. Geological Survey (USGS) with support from the U.S. Agency for International Development (USAID) mission in Afghanistan, has prepared a digital map showing the distribution of probable and suspected Quaternary faults in Afghanistan. This map is a key component of a broader effort to assess and map the country's seismic hazards. Our analyses of remote-sensing imagery reveal a...
Authors
C.A. Ruleman, A. J. Crone, M. N. Machette, K. M. Haller, K.S. Rukstales
Science and Products
Filter Total Items: 13
Geologic map of the Clark Peak quadrangle, Jackson and Larimer Counties, Colorado Geologic map of the Clark Peak quadrangle, Jackson and Larimer Counties, Colorado
The Clark Peak quadrangle encompasses the southern end of the Medicine Bow Mountains and the northernmost end of the Mummy Range. The Continental Divide traverses the map area and Highway 14 cross the Divide at Cameron Pass, in the southeastern corner of the map. Approximately the eastern half of the map, and a few areas to the west, are underlain by Early Proterozoic plutonic and...
Filter Total Items: 16
Neotectonic inversion of the Hindu Kush-Pamir mountain region Neotectonic inversion of the Hindu Kush-Pamir mountain region
The Hindu Kush-Pamir region of southern Asia is one of Earth's most rapidly deforming regions and it is poorly understood. This study develops a kinematic model based on active faulting in this part of the Trans-Himalayan orogenic belt. Previous studies have described north-verging thrust faults and some strike-slip faults, reflected in the northward-convex geomorphologic and structural...
Authors
C.A. Ruleman
2007 Rocky Mountain section Friends of the Pleistocene field trip - Quaternary geology of the San Luis basin of Colorado and New Mexico, September 7-9, 2007 2007 Rocky Mountain section Friends of the Pleistocene field trip - Quaternary geology of the San Luis basin of Colorado and New Mexico, September 7-9, 2007
Prologue Welcome to the 2007 Rocky Mountain Cell Friends of the Pleistocene Field Trip, which will concentrate on the Quaternary geology of the San Luis Basin of Colorado and New Mexico. To our best knowledge, Friends of the Pleistocene (FOP) has never run a trip through the San Luis Basin, although former trips in the region reviewed the 'Northern Rio Grande rift' in 1987 and the...
Authors
Michael N. Machette, Mary-Margaret Coates, Margo L. Johnson
Map and Database of Probable and Possible Quaternary Faults in Afghanistan Map and Database of Probable and Possible Quaternary Faults in Afghanistan
The U.S. Geological Survey (USGS) with support from the U.S. Agency for International Development (USAID) mission in Afghanistan, has prepared a digital map showing the distribution of probable and suspected Quaternary faults in Afghanistan. This map is a key component of a broader effort to assess and map the country's seismic hazards. Our analyses of remote-sensing imagery reveal a...
Authors
C.A. Ruleman, A. J. Crone, M. N. Machette, K. M. Haller, K.S. Rukstales
*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