Dr. Jayko is a Scientist Emeritus at the Geology, Minerals, Energy, and Geophysics Science Center at the U.C. White Mountain Research Station. She came to the USGS in 1979 and returned as an Emeritus. She studied tectonics of convergent margin associations and most recently, she’s focused on the Plio-Pleistocene transtensive deformation.
Dr. Jayko's thesis concerned Late Mesozoic subduction. She studied tectonics of convergent margin associations with work in the continental collision complex of the French Alps, in a Paleozoic transtensive basement tectonics in eastern Australia, and in the Paleozoic fold and thrust belt of central Nevada. Most recently she’s focused on the Plio-Pleistocene transtensive deformation.
Professional Experience
1979 - Current, Geologist, U.S. Geological Survey
1995 - 1998, Chair, I.U.G.G., International Lithosphere Program
1993 - 1995, Vice chair, I.U.G.G., International Lithosphere Program
1990 - 1992, Lecturer, Victoria University Wellington, New Zealand
1978 - 1979, Geometrics, EGG, Sunnyvale, California
Education and Certifications
Ph.D., Earth Sciences, University of California, Santa Cruz, 1984 (Gilbert Fellowship 1988)
B.A., Geology, Humboldt State University, 1976
Affiliations and Memberships*
Geological Society of America, Fellow
American Geophysical Union
Science and Products
Geologic Map of the Pahranagat Range 30' x 60' Quadrangle, Lincoln and Nye Counties, Nevada
Introduction
The Pahranagat Range 30' x 60' quadrangle lies within an arid, sparsely populated part of Lincoln and Nye Counties, southeastern Nevada. Much of the area is public land that includes the Desert National Wildlife Range, the Pahranagat National Wildlife Refuge, and the Nellis Air Force Base. The topography, typical of much of the Basin and Range Province, consists of north-south-tren
Geology of the Cape MendocinoGeology of the Cape Mendocino, Eureka, Garberville, and southwestern part of the Hayfork 30 x 60 minute quadrangles and adjacent offshore area, northern California, with digital database
Introduction
These geologic maps and accompanying structure sections depict the geology and structure of much of northwestern California and the adjacent continental margin. The map area includes the Mendocino triple junction, which is the juncture of the North American continental plate with two plates of the Pacific ocean basin. The map area also encompasses major geographic and geologic prov
Map showing locations of damaging landslides in San Mateo County, California, resulting from 1997-98 El Nino rainstorms
Heavy rainfall associated with a strong El Nino caused over $150 million in landslide damage in the 10-county San Francisco Bay region during the winter and spring of 1998. A team of USGS scientists collected information on landslide locations and damage costs. About $55 million in damages were assessed in San Mateo County. The only fatality attributed to landsliding in the region during the perio
Reconnaissance geologic map of the Covelo 30- by 60-minute Quadrangle, Northern California
No abstract available.
Filter Total Items: 59
Geologic and hydrologic concerns about pupfish divergence during the last glacial maximum
Martin et al.'s [1] double-digest, restriction-site-associated DNA sequencing of Death Valley pupfish species (Cyprinodon) and new time-calibrated phylogenetic analysis provide estimated divergence ages for North American pupfish at two scales. On the larger temporal and spatial scale, Martin et al. conclude that the Death Valley pupfish shared common ancestry with: Cyprinodon albivelis Rio Yaqui,
Authors
Jeffrey R. Knott, Fred Phillips, Marith C. Reheis, Donald Sada, Angela S. Jayko, Gary Axen
Surface slip during large Owens Valley earthquakes
The 1872 Owens Valley earthquake is the third largest known historical earthquake in California. Relatively sparse field data and a complex rupture trace, however, inhibited attempts to fully resolve the slip distribution and reconcile the total moment release. We present a new, comprehensive record of surface slip based on lidar and field investigation, documenting 162 new measurements of lateral
Authors
E.K. Haddon, C.B. Amos, O. Zielke, Angela S. Jayko, R. Burgmann
Surface slip during large Owens Valley earthquakes
The 1872 Owens Valley earthquake is the third largest known historical earthquake in California. Relatively sparse field data and a complex rupture trace, however, inhibited attempts to fully resolve the slip distribution and reconcile the total moment release. We present a new, comprehensive record of surface slip based on lidar and field investigation, documenting 162 new measurements of lateral
Authors
Elizabeth Haddon, Colin Amos, Olaf Zielke, Angela S. Jayko, Roland Burgmann
Magnetic and gravity studies of Mono Lake, east-central, California
From August 26 to September 5, 2011, the U.S. Geological Survey (USGS) collected more than 600 line-kilometers of shipborne magnetic data on Mono Lake, 20 line-kilometers of ground magnetic data on Paoha Island, 50 gravity stations on Paoha and Negit Islands, and 28 rock samples on Paoha and Negit Islands, in east-central California. Magnetic and gravity investigations were undertaken in Mono Lake
Authors
Noah D. Athens, David A. Ponce, Angela S. Jayko, Matt Miller, Bobby McEvoy, Mae Marcaida, Margaret T. Mangan, Stuart K. Wilkinson, James S. McClain, Bruce A. Chuchel, Kevin M. Denton
By
Energy and Minerals Mission Area, Natural Hazards Mission Area, Energy Resources Program, Mineral Resources Program, National Laboratories Program, Science and Decisions Center, Groundwater and Streamflow Information Program, Volcano Hazards Program, Volcano Science Center, Geology, Minerals, Energy, and Geophysics Science Center
Chronology of tectonic, geomorphic, and volcanic interactions and the tempo of fault slip near Little Lake, California
New geochronologic and geomorphic constraints on the Little Lake fault in the Eastern California shear zone reveal steady, modest rates of dextral slip during and since the mid-to-late Pleistocene. We focus on a suite of offset fluvial landforms in the Pleistocene Owens River channel that formed in response to periodic interaction with nearby basalt flows, thereby recording displacement over multi
Authors
Colin B. Amos, Sarah J. Brownlee, Sylan H. Rood, G. Burch Fisher, Roland Burgmann, Paul R. Renne, Angela S. Jayko
Methods and spatial extent of geophysical Investigations, Mono Lake, California, 2009 to 2011
This report summarizes the methods and spatial extent of geophysical surveys conducted on Mono Lake and Paoha Island by U.S. Geological Survey during 2009 and 2011. The surveys include acquisition of new high resolution seismic reflection data, shipborne high resolution magnetic data, and ground magnetic and gravity data on Paoha Island. Several trials to acquire swath bathymetry and side scan son
Authors
A. S. Jayko, P. E. Hart, J.R. Childs, M.-H. Cormier, D. A. Ponce, N. D. Athens, J. S. McClain
Active transtensional intracontinental basins: Walker Lane in the western Great Basin
The geometry and dimensions of sedimentary basins within the Walker Lane are a result of Plio-Pleistocene transtensive deformation and partial detachment of the Sierra Nevada crustal block from the North American plate. Distinct morpho-tectonic domains lie within this active transtensive zone. The northeast end of the Walker Lane is partly buried by active volcanism of the southern Cascades, and a
Authors
Angela S. Jayko, Marcus Bursik
Liquefaction caused by the 2009 Olancha, California (USA), M5.2 earthquake
The October 3, 2009 (01:16:00 UTC), Olancha M5.2 earthquake caused extensive liquefaction as well as permanent horizontal ground deformation within a 1.2 km2area earthquake in Owens Valley in eastern California (USA). Such liquefaction is rarely observed during earthquakes of M ≤ 5.2. We conclude that subsurface conditions, not unusual ground motion, were the primary factors contributing to the li
Authors
T.L. Holzer, A. S. Jayko, E. Hauksson, J.P.B. Fletcher, T.E. Noce, M.J. Bennett, C.M. Dietel, K.W. Hudnut
Deformation of the late Miocene to Pliocene Inyo Surface, eastern Sierra region, California
A middle and late Miocene erosion surface, the Inyo Surface, underlies late Miocene mafic flows in the White Mountains and late Miocene and (or) early Pliocene flows elsewhere in the eastern Sierra region. The Inyo Surface is correlated with an erosion surface that underlies late Miocene mafic flows in the central and northern Sierra Nevada. The mafic flows had outpourings similar to flood basalts
Authors
A. S. Jayko
A mactrid bivalve from pleistocene deposits of Lake Russell, Mono Basin, California
[No abstract available]
Authors
R. Hershler, A. S. Jayko
The Mono Arch, eastern Sierra region, California: Dynamic topography associated with upper-mantle upwelling?
A broad, topographic flexure localized east of and over the central and southern Sierra Nevada, herein named the Mono Arch, apparently represents crustal response to lithospheric and/or upper-mantle processes, probably dominated by mantle upwelling within the continental interior associated Pacific-North American plate-boundary deformation. This zone of flexure is identified through comparison bet
Authors
A. S. Jayko
Late Quaternary MIS 6-8 shoreline features of pluvial Owens Lake, Owens Valley, eastern California
The chronologic history of pluvial Owens Lake along the eastern Sierra Nevada in Owens Valley, California, has previously been reported for the interval of time from ca. 25 calibrated ka to the present. However, the age, distribution, and paleoclimatic context of higher-elevation shoreline features have not been formally documented. We describe the location and characteristics of wave-formed erosi
Authors
A. S. Jayko, S.N. Bacon
Science and Products
- Maps
Geologic Map of the Pahranagat Range 30' x 60' Quadrangle, Lincoln and Nye Counties, Nevada
Introduction The Pahranagat Range 30' x 60' quadrangle lies within an arid, sparsely populated part of Lincoln and Nye Counties, southeastern Nevada. Much of the area is public land that includes the Desert National Wildlife Range, the Pahranagat National Wildlife Refuge, and the Nellis Air Force Base. The topography, typical of much of the Basin and Range Province, consists of north-south-trenGeology of the Cape MendocinoGeology of the Cape Mendocino, Eureka, Garberville, and southwestern part of the Hayfork 30 x 60 minute quadrangles and adjacent offshore area, northern California, with digital database
Introduction These geologic maps and accompanying structure sections depict the geology and structure of much of northwestern California and the adjacent continental margin. The map area includes the Mendocino triple junction, which is the juncture of the North American continental plate with two plates of the Pacific ocean basin. The map area also encompasses major geographic and geologic provMap showing locations of damaging landslides in San Mateo County, California, resulting from 1997-98 El Nino rainstorms
Heavy rainfall associated with a strong El Nino caused over $150 million in landslide damage in the 10-county San Francisco Bay region during the winter and spring of 1998. A team of USGS scientists collected information on landslide locations and damage costs. About $55 million in damages were assessed in San Mateo County. The only fatality attributed to landsliding in the region during the perioReconnaissance geologic map of the Covelo 30- by 60-minute Quadrangle, Northern California
No abstract available. - Publications
Filter Total Items: 59
Geologic and hydrologic concerns about pupfish divergence during the last glacial maximum
Martin et al.'s [1] double-digest, restriction-site-associated DNA sequencing of Death Valley pupfish species (Cyprinodon) and new time-calibrated phylogenetic analysis provide estimated divergence ages for North American pupfish at two scales. On the larger temporal and spatial scale, Martin et al. conclude that the Death Valley pupfish shared common ancestry with: Cyprinodon albivelis Rio Yaqui,AuthorsJeffrey R. Knott, Fred Phillips, Marith C. Reheis, Donald Sada, Angela S. Jayko, Gary AxenSurface slip during large Owens Valley earthquakes
The 1872 Owens Valley earthquake is the third largest known historical earthquake in California. Relatively sparse field data and a complex rupture trace, however, inhibited attempts to fully resolve the slip distribution and reconcile the total moment release. We present a new, comprehensive record of surface slip based on lidar and field investigation, documenting 162 new measurements of lateralAuthorsE.K. Haddon, C.B. Amos, O. Zielke, Angela S. Jayko, R. BurgmannSurface slip during large Owens Valley earthquakes
The 1872 Owens Valley earthquake is the third largest known historical earthquake in California. Relatively sparse field data and a complex rupture trace, however, inhibited attempts to fully resolve the slip distribution and reconcile the total moment release. We present a new, comprehensive record of surface slip based on lidar and field investigation, documenting 162 new measurements of lateralAuthorsElizabeth Haddon, Colin Amos, Olaf Zielke, Angela S. Jayko, Roland BurgmannMagnetic and gravity studies of Mono Lake, east-central, California
From August 26 to September 5, 2011, the U.S. Geological Survey (USGS) collected more than 600 line-kilometers of shipborne magnetic data on Mono Lake, 20 line-kilometers of ground magnetic data on Paoha Island, 50 gravity stations on Paoha and Negit Islands, and 28 rock samples on Paoha and Negit Islands, in east-central California. Magnetic and gravity investigations were undertaken in Mono LakeAuthorsNoah D. Athens, David A. Ponce, Angela S. Jayko, Matt Miller, Bobby McEvoy, Mae Marcaida, Margaret T. Mangan, Stuart K. Wilkinson, James S. McClain, Bruce A. Chuchel, Kevin M. DentonByEnergy and Minerals Mission Area, Natural Hazards Mission Area, Energy Resources Program, Mineral Resources Program, National Laboratories Program, Science and Decisions Center, Groundwater and Streamflow Information Program, Volcano Hazards Program, Volcano Science Center, Geology, Minerals, Energy, and Geophysics Science CenterChronology of tectonic, geomorphic, and volcanic interactions and the tempo of fault slip near Little Lake, California
New geochronologic and geomorphic constraints on the Little Lake fault in the Eastern California shear zone reveal steady, modest rates of dextral slip during and since the mid-to-late Pleistocene. We focus on a suite of offset fluvial landforms in the Pleistocene Owens River channel that formed in response to periodic interaction with nearby basalt flows, thereby recording displacement over multiAuthorsColin B. Amos, Sarah J. Brownlee, Sylan H. Rood, G. Burch Fisher, Roland Burgmann, Paul R. Renne, Angela S. JaykoMethods and spatial extent of geophysical Investigations, Mono Lake, California, 2009 to 2011
This report summarizes the methods and spatial extent of geophysical surveys conducted on Mono Lake and Paoha Island by U.S. Geological Survey during 2009 and 2011. The surveys include acquisition of new high resolution seismic reflection data, shipborne high resolution magnetic data, and ground magnetic and gravity data on Paoha Island. Several trials to acquire swath bathymetry and side scan sonAuthorsA. S. Jayko, P. E. Hart, J.R. Childs, M.-H. Cormier, D. A. Ponce, N. D. Athens, J. S. McClainActive transtensional intracontinental basins: Walker Lane in the western Great Basin
The geometry and dimensions of sedimentary basins within the Walker Lane are a result of Plio-Pleistocene transtensive deformation and partial detachment of the Sierra Nevada crustal block from the North American plate. Distinct morpho-tectonic domains lie within this active transtensive zone. The northeast end of the Walker Lane is partly buried by active volcanism of the southern Cascades, and aAuthorsAngela S. Jayko, Marcus BursikLiquefaction caused by the 2009 Olancha, California (USA), M5.2 earthquake
The October 3, 2009 (01:16:00 UTC), Olancha M5.2 earthquake caused extensive liquefaction as well as permanent horizontal ground deformation within a 1.2 km2area earthquake in Owens Valley in eastern California (USA). Such liquefaction is rarely observed during earthquakes of M ≤ 5.2. We conclude that subsurface conditions, not unusual ground motion, were the primary factors contributing to the liAuthorsT.L. Holzer, A. S. Jayko, E. Hauksson, J.P.B. Fletcher, T.E. Noce, M.J. Bennett, C.M. Dietel, K.W. HudnutDeformation of the late Miocene to Pliocene Inyo Surface, eastern Sierra region, California
A middle and late Miocene erosion surface, the Inyo Surface, underlies late Miocene mafic flows in the White Mountains and late Miocene and (or) early Pliocene flows elsewhere in the eastern Sierra region. The Inyo Surface is correlated with an erosion surface that underlies late Miocene mafic flows in the central and northern Sierra Nevada. The mafic flows had outpourings similar to flood basaltsAuthorsA. S. JaykoA mactrid bivalve from pleistocene deposits of Lake Russell, Mono Basin, California
[No abstract available]AuthorsR. Hershler, A. S. JaykoThe Mono Arch, eastern Sierra region, California: Dynamic topography associated with upper-mantle upwelling?
A broad, topographic flexure localized east of and over the central and southern Sierra Nevada, herein named the Mono Arch, apparently represents crustal response to lithospheric and/or upper-mantle processes, probably dominated by mantle upwelling within the continental interior associated Pacific-North American plate-boundary deformation. This zone of flexure is identified through comparison betAuthorsA. S. JaykoLate Quaternary MIS 6-8 shoreline features of pluvial Owens Lake, Owens Valley, eastern California
The chronologic history of pluvial Owens Lake along the eastern Sierra Nevada in Owens Valley, California, has previously been reported for the interval of time from ca. 25 calibrated ka to the present. However, the age, distribution, and paleoclimatic context of higher-elevation shoreline features have not been formally documented. We describe the location and characteristics of wave-formed erosiAuthorsA. S. Jayko, S.N. Bacon
*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