Edward A Mankinen
Ed is a Scientist Emeritus with the Geology, Minerals, Energy, and Geophysics Science Center in Menlo Park, CA. He joined the USGS in 1964, retired in 2010, and returned as Emeritus in 2011. His career and current work focus in paleomagnetism/rock magnetism and conducting and interpreting gravity and aeromagnetic surveys through the Geophysical Unit of Menlo Park (GUMP).
For most of Edward Mankinen's 47-year career, he was associated with the Menlo Park Rock Magnetic Laboratory conducting various research projects in paleomagnetism/rock magnetism. Most of these studies were concentrated in the western U.S. but also included field work in Alaska, the Hawaiian Islands, and Antarctica. Beginning in 1996, Ed also became associated with the Geophysical Unit of Menlo Park (GUMP) and began conducting and interpreting gravity and aeromagnetic surveys. Most of these studies were conducted in and around the Nevada Test Site and in the eastern Great Basin. As an emeritus, he has continued work on projects in both disciplines.
Professional Experience
2011 - present, Emeritus Research Geologist, GMEG Science Center
2006 - 2008, Chief, Geophysical Unit of Menlo Park (GUMP)
1988 - 1992, Chief, Paleomagnetism—Menlo Park Project
1969 - 2010, Research Geologist, Branches of: Theoretical Geophysics, Theoretical & Applied Geophysics, Petrophysics & Remote Sensing, and Isotope Geology; now with the GMEG Science Center, all USGS, Menlo Park, CA
1965 - 1969, Laboratory manager, Rock Magnetic Laboratory, Menlo Park, CA
1964 - 1965, Physical Science Technician, USGS, Menlo Park, CA
Education and Certifications
M.S., Geology, San Jose State College, 1971
B.S., Geology, San Jose State College, 1963
Affiliations and Memberships*
American Geophysical Union
Geological Society of America
Honors and Awards
2004, 2005, 2006 - USGS Star Awards
1972 - USGS Quality Increase
1970 - Department of Interior Antarctic Service Award
1970 - Congressional Antarctic Medal
Science and Products
Filter Total Items: 72
Geophysical setting of the Pahute Mesa - Oasis Valley region, southern Nevada
No abstract available.
Authors
Edward A. Mankinen, Thomas G. Hildenbrand, Christopher J. Fridrich, Edwin H. McKee, Clifford J. Schenkel
Aeromagnetic Expression of Buried Basaltic Volcanoes Near Yucca Mountain, Nevada
A high-resolution aeromagnetic survey has defined a number of small dipolar anomalies indicating the presence of magnetic bodies buried beneath the surface of Crater Flat and the Amargosa Desert. Results of potential-field modeling indicate that isolated, small-volume, highly magnetic bodies embedded within the alluvial deposits of both areas produce the anomalies. Their physical characteristics a
Authors
Dennis W. O'Leary, E. A. Mankinen, R.J. Blakely, V. E. Langenheim, D. A. Ponce
Concordant paleolatitudes for Neoproterozoic ophiolitic rocks of the Trinity Complex, Klamath Mountains, California
New paleomagnetic results from the eastern Klamath Mountains of northern California show that Neoproterozoic rocks of the Trinity ophiolitic complex and overlying Middle Devonian volcanic rocks are latitudinally concordant with cratonal North America. Combining paleomagnetic data with regional geologic and faunal evidence suggests that the Trinity Complex and related terranes of the eastern Klamat
Authors
E. A. Mankinen, N. Lindsley-Griffin, J. R. Griffin
The Silent Canyon caldera — A three dimensional model as part of a Pahute Mesa - Oasis Valley, Nevada, hydrogeologic model
A 3-dimensional caldera model based on gravity inversion, drill-hole data, and geologic mapping offers the framework for a hydrogeologic evaluation of the Silent Canyon caldera in the central part of Pahute Mesa, Nevada.
It has been recognized for several decades that the central part of Pahute Mesa is the site of a buried caldera called the Silent Canyon caldera. Conceptually, the structural fra
Authors
Edwin H. McKee, Geoffery A. Phelps, Edward A. Mankinen
Book review: Geomagnetism. (Research: Past and Present)
Book information: Geomagnetism. (Research: Past and Present)" Wilfried Schröder, editor, 2000. Science Edition /IDCH-IAGA, Darmstadt Germany. 248 p.
Authors
Edward A. Mankinen
Digital isostatic gravity map of the Nevada Test Site and vicinity, Nye, Lincoln, and Clark Counties, Nevada, and Inyo County, California
An isostatic gravity map of the Nevada Test Site area was prepared from publicly
available gravity data (Ponce, 1997) and from gravity data recently collected by the U.S. Geological Survey (Mankinen and others, 1999; Morin and Blakely, 1999). Gravity data were processed using standard gravity data reduction techniques. Southwest Nevada is characterized by gravity anomalies that reflect the distri
Authors
David A. Ponce, E. A. Mankinen, J. G. Davidson, R. L. Morin, R.J. Blakely
Gravity and magnetic study of the Pahute Mesa and Oasis Valley region, Nye County, Nevada
Regional gravity and aeromagnetic maps reveal the existence of deep basins underlying much of the southwestern Nevada volcanic field, approximately 150 km northwest of Las Vegas. These maps also indicate the presence of prominent features (geophysical lineaments) within and beneath the basin fill. Detailed gravity surveys were conducted in order to characterize the nature of the basin boundaries,
Authors
Edward A. Mankinen, Thomas G. Hildenbrand, Gary L. Dixon, Edwin H. McKee, Christopher J. Fridrich, Randell J. Laczniak
Inversion of gravity data to define the pre-Tertiary surface and regional structures possibly influencing ground-water flow in the Pahute Mesa-Oasis Valley region, Nye County, Nevada
A three-dimensional inversion of gravity data from the Pahute Mesa–Oasis Valley region reveals a topographically complex pre-Tertiary basement surface. Beneath Pahute Mesa, the thickness of the Tertiary volcanic deposits may exceed 5 km within the Silent Canyon caldera complex. South of Pahute Mesa in Oasis Valley, basement is shallower (< 1 km) but between this valley and the Timber Mountain cald
Authors
T.G. Hildenbrand, V. E. Langenheim, E. A. Mankinen, E.H. McKee
Geologic evaluation of the Oasis Valley basin, Nye County, Nevada
No abstract available.
Authors
C. J. Fridrich, S.A. Minor, E. A. Mankinen
Rotational and accretionary evolution of the Klamath Mountains, California and Oregon, from Devonian to present time
The purpose of this report is to show graphically how the Klamath Mountains grew from a relatively small nucleus in Early Devonian time to its present size while rotating clockwise approximately 110°. This growth occurred by the addition of large tectonic slices of oceanic lithosphere, volcanic arcs, and melange during a sequence of accretionary episodes. The Klamath Mountains province consists of
Authors
William P. Irwin, Edward A. Mankinen
Principal facts for new gravity stations in the Pahute Mesa and Oasis Valley areas, Nye County, Nevada
No abstract available.
Authors
E. A. Mankinen, T.G. Hildenbrand, C. W. Roberts, J. G. Davidson
Far-travelled permian chert of the North Fork terrane, Klamath mountains, California
Permian chert in the North Fork terrane and correlative rocks of the Klamath Mountains province has a remanent magnetization that is prefolding and presumably primary. Paleomagnetic results indicate that the chert formed at a paleolatitude of 8.6?? ?? 2.5?? but in which hemisphere remains uncertain. This finding requires that these rocks have undergone at least 8.6?? ?? 4.4?? of northward transpor
Authors
E. A. Mankinen, W. P. Irwin, C.D. Blome
Science and Products
Filter Total Items: 72
Geophysical setting of the Pahute Mesa - Oasis Valley region, southern Nevada
No abstract available.
Authors
Edward A. Mankinen, Thomas G. Hildenbrand, Christopher J. Fridrich, Edwin H. McKee, Clifford J. Schenkel
Aeromagnetic Expression of Buried Basaltic Volcanoes Near Yucca Mountain, Nevada
A high-resolution aeromagnetic survey has defined a number of small dipolar anomalies indicating the presence of magnetic bodies buried beneath the surface of Crater Flat and the Amargosa Desert. Results of potential-field modeling indicate that isolated, small-volume, highly magnetic bodies embedded within the alluvial deposits of both areas produce the anomalies. Their physical characteristics a
Authors
Dennis W. O'Leary, E. A. Mankinen, R.J. Blakely, V. E. Langenheim, D. A. Ponce
Concordant paleolatitudes for Neoproterozoic ophiolitic rocks of the Trinity Complex, Klamath Mountains, California
New paleomagnetic results from the eastern Klamath Mountains of northern California show that Neoproterozoic rocks of the Trinity ophiolitic complex and overlying Middle Devonian volcanic rocks are latitudinally concordant with cratonal North America. Combining paleomagnetic data with regional geologic and faunal evidence suggests that the Trinity Complex and related terranes of the eastern Klamat
Authors
E. A. Mankinen, N. Lindsley-Griffin, J. R. Griffin
The Silent Canyon caldera — A three dimensional model as part of a Pahute Mesa - Oasis Valley, Nevada, hydrogeologic model
A 3-dimensional caldera model based on gravity inversion, drill-hole data, and geologic mapping offers the framework for a hydrogeologic evaluation of the Silent Canyon caldera in the central part of Pahute Mesa, Nevada.
It has been recognized for several decades that the central part of Pahute Mesa is the site of a buried caldera called the Silent Canyon caldera. Conceptually, the structural fra
Authors
Edwin H. McKee, Geoffery A. Phelps, Edward A. Mankinen
Book review: Geomagnetism. (Research: Past and Present)
Book information: Geomagnetism. (Research: Past and Present)" Wilfried Schröder, editor, 2000. Science Edition /IDCH-IAGA, Darmstadt Germany. 248 p.
Authors
Edward A. Mankinen
Digital isostatic gravity map of the Nevada Test Site and vicinity, Nye, Lincoln, and Clark Counties, Nevada, and Inyo County, California
An isostatic gravity map of the Nevada Test Site area was prepared from publicly
available gravity data (Ponce, 1997) and from gravity data recently collected by the U.S. Geological Survey (Mankinen and others, 1999; Morin and Blakely, 1999). Gravity data were processed using standard gravity data reduction techniques. Southwest Nevada is characterized by gravity anomalies that reflect the distri
Authors
David A. Ponce, E. A. Mankinen, J. G. Davidson, R. L. Morin, R.J. Blakely
Gravity and magnetic study of the Pahute Mesa and Oasis Valley region, Nye County, Nevada
Regional gravity and aeromagnetic maps reveal the existence of deep basins underlying much of the southwestern Nevada volcanic field, approximately 150 km northwest of Las Vegas. These maps also indicate the presence of prominent features (geophysical lineaments) within and beneath the basin fill. Detailed gravity surveys were conducted in order to characterize the nature of the basin boundaries,
Authors
Edward A. Mankinen, Thomas G. Hildenbrand, Gary L. Dixon, Edwin H. McKee, Christopher J. Fridrich, Randell J. Laczniak
Inversion of gravity data to define the pre-Tertiary surface and regional structures possibly influencing ground-water flow in the Pahute Mesa-Oasis Valley region, Nye County, Nevada
A three-dimensional inversion of gravity data from the Pahute Mesa–Oasis Valley region reveals a topographically complex pre-Tertiary basement surface. Beneath Pahute Mesa, the thickness of the Tertiary volcanic deposits may exceed 5 km within the Silent Canyon caldera complex. South of Pahute Mesa in Oasis Valley, basement is shallower (< 1 km) but between this valley and the Timber Mountain cald
Authors
T.G. Hildenbrand, V. E. Langenheim, E. A. Mankinen, E.H. McKee
Geologic evaluation of the Oasis Valley basin, Nye County, Nevada
No abstract available.
Authors
C. J. Fridrich, S.A. Minor, E. A. Mankinen
Rotational and accretionary evolution of the Klamath Mountains, California and Oregon, from Devonian to present time
The purpose of this report is to show graphically how the Klamath Mountains grew from a relatively small nucleus in Early Devonian time to its present size while rotating clockwise approximately 110°. This growth occurred by the addition of large tectonic slices of oceanic lithosphere, volcanic arcs, and melange during a sequence of accretionary episodes. The Klamath Mountains province consists of
Authors
William P. Irwin, Edward A. Mankinen
Principal facts for new gravity stations in the Pahute Mesa and Oasis Valley areas, Nye County, Nevada
No abstract available.
Authors
E. A. Mankinen, T.G. Hildenbrand, C. W. Roberts, J. G. Davidson
Far-travelled permian chert of the North Fork terrane, Klamath mountains, California
Permian chert in the North Fork terrane and correlative rocks of the Klamath Mountains province has a remanent magnetization that is prefolding and presumably primary. Paleomagnetic results indicate that the chert formed at a paleolatitude of 8.6?? ?? 2.5?? but in which hemisphere remains uncertain. This finding requires that these rocks have undergone at least 8.6?? ?? 4.4?? of northward transpor
Authors
E. A. Mankinen, W. P. Irwin, C.D. Blome
*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