Warren J Nokleberg (Former Employee)
Science and Products
Filter Total Items: 15
Filter Total Items: 108
Metallogenesis of mainland Alaska and the Russian Northeast Metallogenesis of mainland Alaska and the Russian Northeast
No abstract available.
Authors
W. J. Nokleberg, T. K. Bundtzen, D. J. Grybeck, R. D. Koch, R.A. Eremin, I.S. Rozenblum, A.A. Sidorov, S.G. Byalobzhesky, G.M. Sosunov, V.I. Shpikerman, M.E. Gorodinksy
Distribution, facies, ages, and proposed tectonic associations of regionally metamorphosed rocks in east- and south-central Alaska Distribution, facies, ages, and proposed tectonic associations of regionally metamorphosed rocks in east- and south-central Alaska
Most of the exposed bedrock in east- and south-central Alaska has been regionally metamorphosed and deformed during Mesozoic and early Cenozoic time. All the regionally metamorphosed rocks are assigned to metamorphic-facies units on the basis of their temperature and pressure conditions and metamorphic age. North of the McKinley and Denali faults, the crystalline rocks of the Yukon-...
Authors
Cynthia Dusel-Bacon, Bela Csejtey, Helen L. Foster, Elizabeth O. Doyle, Warren J. Nokleberg, George Plafker
Thin, low‐velocity crust beneath the southern Yukon‐Tanana Terrane, east central Alaska: Results from Trans‐Alaska crustal transect refraction/wide‐angle reflection data Thin, low‐velocity crust beneath the southern Yukon‐Tanana Terrane, east central Alaska: Results from Trans‐Alaska crustal transect refraction/wide‐angle reflection data
A seismic refraction/wide‐angle reflection survey for the Trans‐Alaska Crustal Transect program reveals a thin, reflective crust beneath the southern Yukon‐Tanana terrane (YTT) in east central Alaska. These data are the first detailed refraction survey of the southern YTT and compose a 130‐km‐long reversed profile along the Alaska and Richardson highways. Results from this study indicate...
Authors
Bruce C. Beaudoin, Gary S. Fuis, Walter D. Mooney, Warren J. Nokleberg, Nikolas I. Christensen
Preliminary geologic map of the Mount Hayes quadrangle, eastern Alaska Range, Alaska Preliminary geologic map of the Mount Hayes quadrangle, eastern Alaska Range, Alaska
No abstract available.
Authors
W. J. Nokleberg, J. N. Aleinikoff, I. M. Lange, S. R. Silva, R. T. Miyaoka, C. E. Schwab, R. E. Zehner, G. C. Bond, D.H. Richter, T. E. Smith, J. H. Stout
Geologic map of the Tehipite Dome quadrangle, Fresno County, California Geologic map of the Tehipite Dome quadrangle, Fresno County, California
No abstract available.
Authors
James G. Moore, Warren J. Nokleberg
Seismic reflection/refraction mapping of faulting and regional dips in the eastern Alaska Range Seismic reflection/refraction mapping of faulting and regional dips in the eastern Alaska Range
We present the results of a Trans‐Alaska Crustal Transect (TACT) investigation of the upper 2–5 km of the eastern Alaska Range in the vicinity of the Denali fault based on seismic reflection/refraction data, laboratory measurements of rock velocities, and structural mapping. The Denali fault is a major dextral slip structure mappable for more than 2000 km separating the Wrangellia and...
Authors
Thomas M. Brocher, Warren J. Nokleberg, N.I. Christensen, William J. Lutter, Eric L. Geist, M. A. Fisher
The Denali fault system and Alaska Range of Alaska: Evidence for underplated Mesozoic flysch from magnetotelluric surveys The Denali fault system and Alaska Range of Alaska: Evidence for underplated Mesozoic flysch from magnetotelluric surveys
Regional magnetotelluric surveys recently completed across the central and eastern Alaska Range of Alaska provide evidence for large volumes of conductive rocks beneath the core of the range. These conductive rocks may represent a formerly extensive, but now collapsed, Mesozoic flysch basin formed on the leading edge of the Talkeetna superterrane (amalgamated Wrangellia, Peninsular, and...
Authors
W. D. Stanley, Victor F. Labson, Warren J. Nokleberg, Bela Csejtey, M. A. Fisher
Chapter 14: Middle Cretaceous silicic metavolcanic rocks in the Kings Canyon area, central Sierra Nevada, California Chapter 14: Middle Cretaceous silicic metavolcanic rocks in the Kings Canyon area, central Sierra Nevada, California
Metamorphosed silicic volcanic and hypabyssal rocks of middle Cretaceous (110 to 100 Ma) age occur in two roof pendants in the Kings Canyon area of the central Sierra Nevada. The metavolcanic remnants are similar in age to or are only slightly older than the voluminous enclosing batholithic rocks. Thus, high to surface levels of the batholith are implied for this region. This is...
Authors
J.B. Saleeby, R. W. Kistler, Samuel Longiaru, James G. Moore, Warren J. Nokleberg
Geology of the Brooks Range and North Slope Geology of the Brooks Range and North Slope
No abstract available.
Authors
Thomas E. Moore, Gill Mull
The crustal structure of the Wrangellia Terrane along the East Glenn Highway, eastern‐southern Alaska The crustal structure of the Wrangellia Terrane along the East Glenn Highway, eastern‐southern Alaska
Recently acquired seismic refraction data from eastern‐southern Alaska provide new information on the structure and composition of the Wrangellia and adjacent terranes. The data comprise a 160‐km‐long refraction profile along the East Glenn (Tok‐Cutoff) Highway that was collected as part of the U.S. Geological Survey's multidisciplinary Trans‐Alaska Crustal Transect program. The upper 3...
Authors
E.B. Goodwin, Gary S. Fuis, Warren J. Nokleberg, E. L. Ambos
Seismic reflection images of the crust of the northern part of the Chugach terrane, Alaska: Results of a survey for the Trans-Alaska Crustal Transect (TACT) Seismic reflection images of the crust of the northern part of the Chugach terrane, Alaska: Results of a survey for the Trans-Alaska Crustal Transect (TACT)
Deep crustal seismic reflection data show strong reflections from the middle and lower crust of the convergent continental margin near the eastern end of the Aleutian trench. These data were collected across the Border Ranges fault system, a major suture zone that separates the Peninsular and Chugach tectonostratigraphic terranes. The Chugach terrane consists of metamorphosed, strongly...
Authors
M. A. Fisher, T.M. Brocher, W. J. Nokleberg, George Plafker, G.L. Smith
Bedrock geology and tectonic evolution of the Wrangellia, Peninsular, and Chugach terranes along the Trans-Alaska Crustal Transect in the Chugach Mountains and southern Copper River Basin, Alaska Bedrock geology and tectonic evolution of the Wrangellia, Peninsular, and Chugach terranes along the Trans-Alaska Crustal Transect in the Chugach Mountains and southern Copper River Basin, Alaska
The Trans-Alaskan Crustal Transect in the southern Copper River Basin and Chugach Mountains traverses the margins of the Peninsular and Wrangellia terranes, and the adjacent accretionary oceanic units of the Chugach terrane to the south. The southern Wrangellia terrane margin consists of a polymetamorphosed magmatic arc complex at least in part of Pennsylvanian age (Strelna Metamorphics...
Authors
George Plafker, W. J. Nokleberg, J. S. Lull
Science and Products
Filter Total Items: 15
Filter Total Items: 108
Metallogenesis of mainland Alaska and the Russian Northeast Metallogenesis of mainland Alaska and the Russian Northeast
No abstract available.
Authors
W. J. Nokleberg, T. K. Bundtzen, D. J. Grybeck, R. D. Koch, R.A. Eremin, I.S. Rozenblum, A.A. Sidorov, S.G. Byalobzhesky, G.M. Sosunov, V.I. Shpikerman, M.E. Gorodinksy
Distribution, facies, ages, and proposed tectonic associations of regionally metamorphosed rocks in east- and south-central Alaska Distribution, facies, ages, and proposed tectonic associations of regionally metamorphosed rocks in east- and south-central Alaska
Most of the exposed bedrock in east- and south-central Alaska has been regionally metamorphosed and deformed during Mesozoic and early Cenozoic time. All the regionally metamorphosed rocks are assigned to metamorphic-facies units on the basis of their temperature and pressure conditions and metamorphic age. North of the McKinley and Denali faults, the crystalline rocks of the Yukon-...
Authors
Cynthia Dusel-Bacon, Bela Csejtey, Helen L. Foster, Elizabeth O. Doyle, Warren J. Nokleberg, George Plafker
Thin, low‐velocity crust beneath the southern Yukon‐Tanana Terrane, east central Alaska: Results from Trans‐Alaska crustal transect refraction/wide‐angle reflection data Thin, low‐velocity crust beneath the southern Yukon‐Tanana Terrane, east central Alaska: Results from Trans‐Alaska crustal transect refraction/wide‐angle reflection data
A seismic refraction/wide‐angle reflection survey for the Trans‐Alaska Crustal Transect program reveals a thin, reflective crust beneath the southern Yukon‐Tanana terrane (YTT) in east central Alaska. These data are the first detailed refraction survey of the southern YTT and compose a 130‐km‐long reversed profile along the Alaska and Richardson highways. Results from this study indicate...
Authors
Bruce C. Beaudoin, Gary S. Fuis, Walter D. Mooney, Warren J. Nokleberg, Nikolas I. Christensen
Preliminary geologic map of the Mount Hayes quadrangle, eastern Alaska Range, Alaska Preliminary geologic map of the Mount Hayes quadrangle, eastern Alaska Range, Alaska
No abstract available.
Authors
W. J. Nokleberg, J. N. Aleinikoff, I. M. Lange, S. R. Silva, R. T. Miyaoka, C. E. Schwab, R. E. Zehner, G. C. Bond, D.H. Richter, T. E. Smith, J. H. Stout
Geologic map of the Tehipite Dome quadrangle, Fresno County, California Geologic map of the Tehipite Dome quadrangle, Fresno County, California
No abstract available.
Authors
James G. Moore, Warren J. Nokleberg
Seismic reflection/refraction mapping of faulting and regional dips in the eastern Alaska Range Seismic reflection/refraction mapping of faulting and regional dips in the eastern Alaska Range
We present the results of a Trans‐Alaska Crustal Transect (TACT) investigation of the upper 2–5 km of the eastern Alaska Range in the vicinity of the Denali fault based on seismic reflection/refraction data, laboratory measurements of rock velocities, and structural mapping. The Denali fault is a major dextral slip structure mappable for more than 2000 km separating the Wrangellia and...
Authors
Thomas M. Brocher, Warren J. Nokleberg, N.I. Christensen, William J. Lutter, Eric L. Geist, M. A. Fisher
The Denali fault system and Alaska Range of Alaska: Evidence for underplated Mesozoic flysch from magnetotelluric surveys The Denali fault system and Alaska Range of Alaska: Evidence for underplated Mesozoic flysch from magnetotelluric surveys
Regional magnetotelluric surveys recently completed across the central and eastern Alaska Range of Alaska provide evidence for large volumes of conductive rocks beneath the core of the range. These conductive rocks may represent a formerly extensive, but now collapsed, Mesozoic flysch basin formed on the leading edge of the Talkeetna superterrane (amalgamated Wrangellia, Peninsular, and...
Authors
W. D. Stanley, Victor F. Labson, Warren J. Nokleberg, Bela Csejtey, M. A. Fisher
Chapter 14: Middle Cretaceous silicic metavolcanic rocks in the Kings Canyon area, central Sierra Nevada, California Chapter 14: Middle Cretaceous silicic metavolcanic rocks in the Kings Canyon area, central Sierra Nevada, California
Metamorphosed silicic volcanic and hypabyssal rocks of middle Cretaceous (110 to 100 Ma) age occur in two roof pendants in the Kings Canyon area of the central Sierra Nevada. The metavolcanic remnants are similar in age to or are only slightly older than the voluminous enclosing batholithic rocks. Thus, high to surface levels of the batholith are implied for this region. This is...
Authors
J.B. Saleeby, R. W. Kistler, Samuel Longiaru, James G. Moore, Warren J. Nokleberg
Geology of the Brooks Range and North Slope Geology of the Brooks Range and North Slope
No abstract available.
Authors
Thomas E. Moore, Gill Mull
The crustal structure of the Wrangellia Terrane along the East Glenn Highway, eastern‐southern Alaska The crustal structure of the Wrangellia Terrane along the East Glenn Highway, eastern‐southern Alaska
Recently acquired seismic refraction data from eastern‐southern Alaska provide new information on the structure and composition of the Wrangellia and adjacent terranes. The data comprise a 160‐km‐long refraction profile along the East Glenn (Tok‐Cutoff) Highway that was collected as part of the U.S. Geological Survey's multidisciplinary Trans‐Alaska Crustal Transect program. The upper 3...
Authors
E.B. Goodwin, Gary S. Fuis, Warren J. Nokleberg, E. L. Ambos
Seismic reflection images of the crust of the northern part of the Chugach terrane, Alaska: Results of a survey for the Trans-Alaska Crustal Transect (TACT) Seismic reflection images of the crust of the northern part of the Chugach terrane, Alaska: Results of a survey for the Trans-Alaska Crustal Transect (TACT)
Deep crustal seismic reflection data show strong reflections from the middle and lower crust of the convergent continental margin near the eastern end of the Aleutian trench. These data were collected across the Border Ranges fault system, a major suture zone that separates the Peninsular and Chugach tectonostratigraphic terranes. The Chugach terrane consists of metamorphosed, strongly...
Authors
M. A. Fisher, T.M. Brocher, W. J. Nokleberg, George Plafker, G.L. Smith
Bedrock geology and tectonic evolution of the Wrangellia, Peninsular, and Chugach terranes along the Trans-Alaska Crustal Transect in the Chugach Mountains and southern Copper River Basin, Alaska Bedrock geology and tectonic evolution of the Wrangellia, Peninsular, and Chugach terranes along the Trans-Alaska Crustal Transect in the Chugach Mountains and southern Copper River Basin, Alaska
The Trans-Alaskan Crustal Transect in the southern Copper River Basin and Chugach Mountains traverses the margins of the Peninsular and Wrangellia terranes, and the adjacent accretionary oceanic units of the Chugach terrane to the south. The southern Wrangellia terrane margin consists of a polymetamorphosed magmatic arc complex at least in part of Pennsylvanian age (Strelna Metamorphics...
Authors
George Plafker, W. J. Nokleberg, J. S. Lull
*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