Research on the geology, tectonics, and mineral resources of southwestern Alaska and Prince William Sound.
Professional Experience
2003 - Present Associate Center Director for Geology, USGS Alaska Science Center and Regional Geologic and Mineral Deposit Data for Alaska's Economic Development. This umbrella project focuses on various parts of Alaska where collection and interpretation of new geologic, geochemical, and (or) geophysical data help define undiscovered metallic resources.
1998-2002 Leader, Kuskokwim Mineral Belt Study. Evaluated the lithologic, geochemical, structural, and tectonic controls of mineralization in the 190,000-km2 Kuskokwim Mineral Belt.
1995-1996 Team Leader and Principal Investigator, Cooperative Research and Development Agreement (CRADA) with Calista Native Corporation to study the geology and metallic resources of the Stuyahok area, Holy Cross quadrangle.
1993-1995 Team Leader, Sleetmute Quadrangle Mineral/Environmental Study.
1984-1992 Team Leader, Mineral Resource Assessment of the Iditarod quadrangle, west-central Alaska.
Education and Certifications
M.S. 1980 Stanford University, California Geology
B.S. 1976 Stanford University, California
Affiliations and Memberships*
Alaska Geological Society
Alaska Miners Association
American Geophysical Union
Geological Society of America
Society for Geology Applied to Mineral Deposits
Alaskan Geology, Inc., Non-profit, President
Honors and Awards
Star Awards, 1998, 2001, 2002
Special Act Service Award, 199
Science and Products
Filter Total Items: 51
Regional patterns of Mesozoic-Cenozoic magmatism in western Alaska revealed by new U-Pb and 40Ar/39Ar ages
In support of regional geologic framework studies, we obtained 50 new argon-40/argon-39 (40Ar/39Ar) ages and 33 new uranium-lead (U-Pb) ages from igneous rocks of southwestern Alaska. Most of the samples are from the Sleetmute and Taylor Mountains quadrangles; smaller collections or individual samples are from the Bethel, Candle, Dillingham, Goodnews Bay, Holy Cross, Iditarod, Kantishna River, Lak
Authors
Dwight C. Bradley, Marti L. Miller, Richard M. Friedman, Paul W. Layer, Heather A. Bleick, James V. Jones, Steven E. Box, Susan M. Karl, Nora B. Shew, Timothy S. White, Alison B. Till, Julie A. Dumoulin, Thomas K. Bundtzen, Paul B. O'Sullivan, Thomas D. Ullrich
Early life history of three pelagic-spawning minnows Macrhybopsis spp. in the lower Missouri River
Life-history characteristics of age-0 sturgeon chub Macrhybopsis gelida, shoal chub Macrhybopsis hyostoma and sicklefin chub Macrhybopsis meeki were compared using several methods. AllMacrhybopsis species consumed mostly midge pupae, but M. meeki had the most general diet (Levins' index, B = 0·22) compared with M. hyostoma (B = 0·02) and M. gelida (B = 0·09). Morisita's diet overlap index among sp
Authors
Trevor A. Starks, M.L. Miller, James M. Long
Age-0 Shovelnose Sturgeon prey consumption in the Lower Missouri River
A lack of nutritious food during the first year of life is a hypothesized factor that may limit survival of endangered pallid sturgeonScaphirhynchus albus in the lower Missouri River (LMOR). Unfortunately, information for age-0 pallid sturgeon diets remains limited, but diet analyses for age-0 Scaphirhynchus spp. (sturgeon hereafter) have occurred. Little information, however, exists on age-0 stur
Authors
N.J.C. Gosch, M.L. Miller, T. R. Gemeinhardt, Trevor A. Starks, A. P. Civiello, James M. Long, J. L. Bonneau
Proterozoic geochronological links between the Farewell, Kilbuck, and Arctic Alaska terranes
New U-Pb igneous and detrital zircon ages reveal that despite being separated by younger orogens, three of Alaska’s terranes that contain Precambrian rocks—Farewell, Kilbuck, and Arctic Alaska—are related. The Farewell and Kilbuck terranes can be linked by felsic magmatism at ca. 850 Ma and by abundant detrital zircons in the Farewell that overlap the ca. 2010–2085 Ma age range of granitoids in th
Authors
Dwight C. Bradley, William C. McClelland, Richard M. Friedman, Paul B. O'Sullivan, Paul Layer, Marti L. Miller, Julie A. Dumoulin, Alison B. Till, J. Grant Abbott, Dan B. Bradley, Joseph L. Wooden
Tectonic evolution and Cretaceous gold metallogenesis of southwestern Alaska
Cretaceous gold metallogenesis in southwestern Alaska comprises three distinct episodes related to the accretionary evolution of northwestern North America. The oldest mineralizing event is characterized by 112 Ma Cu-Au-Bi-Te porphyry-type(?) veining in the zoned Bonanza and adjacent plutons that intruded rocks of the Nyac terrane. Tectonic reconstructions and limited geological and geochemical da
Authors
Garth E. Graham, Richard J. Goldfarb, Marti L. Miller, Kati Gibler, Mike Roberts
Field guide to the accretionary complex and neotectonics of south-central Alaska, Anchorage to Seward
No abstract available.
Authors
Susan M. Karl, Dwight C. Bradley, Rodney Combellick, Marti L. Miller
Fossil locations and data for the Taylor Mountains, and parts of the Bethel, Goodnews, and Dillingham quadrangles, southwestern Alaska
Information about fossils collected by U.S. Geological Survey, State of Alaska, academic, and industry geologists that have been reported in literature or archived in reports from the former U.S. Geological Survey Branch of Paleontology and Stratigraphy are compiled on a plate and table in this report to provide comprehensive paleontologic age data for the Taylor Mountains quadrangle area in south
Authors
Susan M. Karl, R. B. Blodgett, Keith A. Labay, S. E. Box, D. C. Bradley, Marti L. Miller, W. K. Wallace, J.F. Baichtal
Reconnaissance study of the Taylor Mountains pluton, southwestern Alaska
The Taylor Mountains pluton is a Late Cretaceous to early Tertiary (median age 65 + or ? 2 Ma) epizonal, composite biotite granite stock located about 235 km (145 mi) northeast of Dillingham in southwestern Alaska. This 30 km2 (12 mi2) pluton has sharp and discordant contacts with hornfels that developed in Upper Cretaceous clastic sedimentary rocks of the Kuskokwim Group. The three intrusive phas
Authors
Travis L. Hudson, Marti L. Miller, Edward P. Klimasauskas, Paul W. Layer
Major- and Trace-Element Concentrations in Rock Samples Collected in 2006 from the Taylor Mountains 1:250,000-scale Quadrangle, Alaska
Introduction
The Kuskokwim mineral belt of Bundtzen and Miller (1997) forms an important metallogenic region in southwestern Alaska that has yielded more than 3.22 million ounces of gold and 400,000 ounces of silver. Precious-metal and related deposits in this region associated with Late Cretaceous to early Tertiary igneous complexes extend into the Taylor Mountains 1:250,000-scale quadrangle.
Authors
Edward P. Klimasauskas, Marti L. Miller, Dwight C. Bradley
Undiscovered locatable mineral resources in the Bay Resource Management Plan Area, Southwestern Alaska: A probabilistic assessment
The Bay Resource Management Plan (RMP) area in southwestern Alaska, north and northeast of Bristol Bay contains significant potential for undiscovered locatable mineral resources of base and precious metals, in addition to metallic mineral deposits that are already known. A quantitative probabilistic assessment has identified 24 tracts of land that are permissive for 17 mineral deposit model types
Authors
J. M. Schmidt, T. D. Light, L. J. Drew, Frederic H. Wilson, Marti L. Miller, R. W. Saltus
Major- and Trace-Element Concentrations in Rock Samples from the Sleetmute 1:250,000-Scale Quadrangle, Alaska
This report consists of geochemical data for rock samples collected in the Sleetmute 1:250,000-scale quadrangle by the U.S. Geological Survey between 1993 and 1999. Data were primarily used to conduct a mineral resource assessment of this quadrangle. The analytical results are presented here as digital tabular data with no interpretation.
Authors
Edward P. Klimasauskas, Marti L. Miller, William J. Keith
Geology and origin of epigenetic lode gold deposits, Tintina Gold Province, Alaska and Yukon: Chapter A in Recent U.S. Geological Survey studies in the Tintina Gold Province, Alaska, United States, and Yukon, Canada--results of a 5-year project
More than 50 million ounces of lode gold resources have
been defined in the previous 15 years throughout accreted
terranes of interior Alaska and in adjacent continental margin
rocks of Yukon. The major deposits in this so-called Tintina
Gold Province formed around 105 to 90 million years ago in
east-central Alaska and Yukon, and around 70 million years
ago in southwestern Alaska, late in th
Authors
Richard J. Goldfarb, Erin E. Marsh, Craig J. R. Hart, John L. Mair, Marti L. Miller, Craig Johnson
U-Pb Isotopic Data and Ages of Zircon and Titanite from Rocks from the Western Alaska Range, Northern Aleutian Range, Taylor Mountains, and Tikchik Mountains Regions, Alaska
This data set contains U-Pb isotopic data and ages of zircon and titanite from igneous and metamorphic rocks collected from the western Alaska and northern Aleutian Range of south-central Alaska. The data sets also contain U-Pb isotopic data and ages of detrital zircon from sedimentary and metasedimentary rocks collected in the same region but also from the Taylor and Wood River Mountains of south
Digital shaded-relief image of Alaska
One of the most spectacular physiographic images of the conterminous United States, and the first to have been produced digitally, is that by Thelin and Pike (USGS I-2206, 1991). The image is remarkable for its crispness of detail and for the natural appearance of the artificial land surface. Our goal has been to produce a shaded-relief image of Alaska that has the same look and feel as the Thelin
Geologic map of the Chugach National Forest, Alaska
No abstract available.
Mineral resource potential map of the Chugach National Forest, Alaska
No abstract available.
Science and Products
- Publications
Filter Total Items: 51
Regional patterns of Mesozoic-Cenozoic magmatism in western Alaska revealed by new U-Pb and 40Ar/39Ar ages
In support of regional geologic framework studies, we obtained 50 new argon-40/argon-39 (40Ar/39Ar) ages and 33 new uranium-lead (U-Pb) ages from igneous rocks of southwestern Alaska. Most of the samples are from the Sleetmute and Taylor Mountains quadrangles; smaller collections or individual samples are from the Bethel, Candle, Dillingham, Goodnews Bay, Holy Cross, Iditarod, Kantishna River, Lak
AuthorsDwight C. Bradley, Marti L. Miller, Richard M. Friedman, Paul W. Layer, Heather A. Bleick, James V. Jones, Steven E. Box, Susan M. Karl, Nora B. Shew, Timothy S. White, Alison B. Till, Julie A. Dumoulin, Thomas K. Bundtzen, Paul B. O'Sullivan, Thomas D. UllrichEarly life history of three pelagic-spawning minnows Macrhybopsis spp. in the lower Missouri River
Life-history characteristics of age-0 sturgeon chub Macrhybopsis gelida, shoal chub Macrhybopsis hyostoma and sicklefin chub Macrhybopsis meeki were compared using several methods. AllMacrhybopsis species consumed mostly midge pupae, but M. meeki had the most general diet (Levins' index, B = 0·22) compared with M. hyostoma (B = 0·02) and M. gelida (B = 0·09). Morisita's diet overlap index among spAuthorsTrevor A. Starks, M.L. Miller, James M. LongAge-0 Shovelnose Sturgeon prey consumption in the Lower Missouri River
A lack of nutritious food during the first year of life is a hypothesized factor that may limit survival of endangered pallid sturgeonScaphirhynchus albus in the lower Missouri River (LMOR). Unfortunately, information for age-0 pallid sturgeon diets remains limited, but diet analyses for age-0 Scaphirhynchus spp. (sturgeon hereafter) have occurred. Little information, however, exists on age-0 sturAuthorsN.J.C. Gosch, M.L. Miller, T. R. Gemeinhardt, Trevor A. Starks, A. P. Civiello, James M. Long, J. L. BonneauProterozoic geochronological links between the Farewell, Kilbuck, and Arctic Alaska terranes
New U-Pb igneous and detrital zircon ages reveal that despite being separated by younger orogens, three of Alaska’s terranes that contain Precambrian rocks—Farewell, Kilbuck, and Arctic Alaska—are related. The Farewell and Kilbuck terranes can be linked by felsic magmatism at ca. 850 Ma and by abundant detrital zircons in the Farewell that overlap the ca. 2010–2085 Ma age range of granitoids in thAuthorsDwight C. Bradley, William C. McClelland, Richard M. Friedman, Paul B. O'Sullivan, Paul Layer, Marti L. Miller, Julie A. Dumoulin, Alison B. Till, J. Grant Abbott, Dan B. Bradley, Joseph L. WoodenTectonic evolution and Cretaceous gold metallogenesis of southwestern Alaska
Cretaceous gold metallogenesis in southwestern Alaska comprises three distinct episodes related to the accretionary evolution of northwestern North America. The oldest mineralizing event is characterized by 112 Ma Cu-Au-Bi-Te porphyry-type(?) veining in the zoned Bonanza and adjacent plutons that intruded rocks of the Nyac terrane. Tectonic reconstructions and limited geological and geochemical daAuthorsGarth E. Graham, Richard J. Goldfarb, Marti L. Miller, Kati Gibler, Mike RobertsField guide to the accretionary complex and neotectonics of south-central Alaska, Anchorage to Seward
No abstract available.AuthorsSusan M. Karl, Dwight C. Bradley, Rodney Combellick, Marti L. MillerFossil locations and data for the Taylor Mountains, and parts of the Bethel, Goodnews, and Dillingham quadrangles, southwestern Alaska
Information about fossils collected by U.S. Geological Survey, State of Alaska, academic, and industry geologists that have been reported in literature or archived in reports from the former U.S. Geological Survey Branch of Paleontology and Stratigraphy are compiled on a plate and table in this report to provide comprehensive paleontologic age data for the Taylor Mountains quadrangle area in southAuthorsSusan M. Karl, R. B. Blodgett, Keith A. Labay, S. E. Box, D. C. Bradley, Marti L. Miller, W. K. Wallace, J.F. BaichtalReconnaissance study of the Taylor Mountains pluton, southwestern Alaska
The Taylor Mountains pluton is a Late Cretaceous to early Tertiary (median age 65 + or ? 2 Ma) epizonal, composite biotite granite stock located about 235 km (145 mi) northeast of Dillingham in southwestern Alaska. This 30 km2 (12 mi2) pluton has sharp and discordant contacts with hornfels that developed in Upper Cretaceous clastic sedimentary rocks of the Kuskokwim Group. The three intrusive phasAuthorsTravis L. Hudson, Marti L. Miller, Edward P. Klimasauskas, Paul W. LayerMajor- and Trace-Element Concentrations in Rock Samples Collected in 2006 from the Taylor Mountains 1:250,000-scale Quadrangle, Alaska
Introduction The Kuskokwim mineral belt of Bundtzen and Miller (1997) forms an important metallogenic region in southwestern Alaska that has yielded more than 3.22 million ounces of gold and 400,000 ounces of silver. Precious-metal and related deposits in this region associated with Late Cretaceous to early Tertiary igneous complexes extend into the Taylor Mountains 1:250,000-scale quadrangle.AuthorsEdward P. Klimasauskas, Marti L. Miller, Dwight C. BradleyUndiscovered locatable mineral resources in the Bay Resource Management Plan Area, Southwestern Alaska: A probabilistic assessment
The Bay Resource Management Plan (RMP) area in southwestern Alaska, north and northeast of Bristol Bay contains significant potential for undiscovered locatable mineral resources of base and precious metals, in addition to metallic mineral deposits that are already known. A quantitative probabilistic assessment has identified 24 tracts of land that are permissive for 17 mineral deposit model typesAuthorsJ. M. Schmidt, T. D. Light, L. J. Drew, Frederic H. Wilson, Marti L. Miller, R. W. SaltusMajor- and Trace-Element Concentrations in Rock Samples from the Sleetmute 1:250,000-Scale Quadrangle, Alaska
This report consists of geochemical data for rock samples collected in the Sleetmute 1:250,000-scale quadrangle by the U.S. Geological Survey between 1993 and 1999. Data were primarily used to conduct a mineral resource assessment of this quadrangle. The analytical results are presented here as digital tabular data with no interpretation.AuthorsEdward P. Klimasauskas, Marti L. Miller, William J. KeithGeology and origin of epigenetic lode gold deposits, Tintina Gold Province, Alaska and Yukon: Chapter A in Recent U.S. Geological Survey studies in the Tintina Gold Province, Alaska, United States, and Yukon, Canada--results of a 5-year project
More than 50 million ounces of lode gold resources have been defined in the previous 15 years throughout accreted terranes of interior Alaska and in adjacent continental margin rocks of Yukon. The major deposits in this so-called Tintina Gold Province formed around 105 to 90 million years ago in east-central Alaska and Yukon, and around 70 million years ago in southwestern Alaska, late in thAuthorsRichard J. Goldfarb, Erin E. Marsh, Craig J. R. Hart, John L. Mair, Marti L. Miller, Craig Johnson - Data
U-Pb Isotopic Data and Ages of Zircon and Titanite from Rocks from the Western Alaska Range, Northern Aleutian Range, Taylor Mountains, and Tikchik Mountains Regions, Alaska
This data set contains U-Pb isotopic data and ages of zircon and titanite from igneous and metamorphic rocks collected from the western Alaska and northern Aleutian Range of south-central Alaska. The data sets also contain U-Pb isotopic data and ages of detrital zircon from sedimentary and metasedimentary rocks collected in the same region but also from the Taylor and Wood River Mountains of south - Maps
Digital shaded-relief image of Alaska
One of the most spectacular physiographic images of the conterminous United States, and the first to have been produced digitally, is that by Thelin and Pike (USGS I-2206, 1991). The image is remarkable for its crispness of detail and for the natural appearance of the artificial land surface. Our goal has been to produce a shaded-relief image of Alaska that has the same look and feel as the ThelinGeologic map of the Chugach National Forest, Alaska
No abstract available.Mineral resource potential map of the Chugach National Forest, Alaska
No abstract available.
*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