Mantle and Crustal Sources of Carbon, Nitrogen, and Noble gases in Cascade-Range and Aleutian-Arc Volcanic gases
Robert B. Symonds, Robert J. Poreda, William C. Evans, Cathy J. Janik, Beatrice E. Ritchie
2003, Open-File Report 2003-436
Here we report anhydrous chemical (CO2, H2S, N2, H2, CH4, O2, Ar, He, Ne) and isotopic (3He/4He, 40Ar/36Ar, δ13C of CO2, δ13C of CH4, δ15N) compositions of virtually airfree gas samples collected between 1994 and 1998 from 12 quiescent but potentially restless volcanoes in the Cascade Range and Aleutian Arc...
Metallogenesis and Tectonics of the Russian Far East, Alaska, and the Canadian Cordillera
Warren J. Nokleberg, Thomas K. Bundtzen, Roman A. Eremin, Vladimir V. Ratkin, Kenneth M. Dawson, Vladimir I. Shpikerman, Nikolai A. Goryachev, Stanislav G. Byalobzhesky, Yuri F. Frolov, Alexander I. Khanchuk, Richard D. Koch, James W.H. Monger, Anany I. Pozdeev, Ilya S. Rozenblum, Sergey M. Rodionov, Leonid M. Parfenov, Christopher R. Scotese, Anatoly A. Sidorov
2003, Open-File Report 2003-434
U.S. Geological Survey Activities Related to American Indians and Alaska Natives Fiscal Year 2003
Water Resources Division, U.S. Geological Survey
2003, Report
IntroductionInformation is a resource for Native American governments, communities, organizations, and people. The U.S. Geological Survey (USGS) provides technical expertise, reports, and other impartial information sources that benefit Native Americans interested in subsistence issues, water, resources and land use, and the health of many parts of the environment. Native decisions...
Preliminary geologic map of Great Sitkin Volcano, Alaska
Christopher F. Waythomas, Thomas P. Miller, Christopher Nye
2003, Open-File Report 2003-36
No abstract available....
Scrubbing masks magmatic degassing during repose at Cascade-Range and Aleutian-Arc volcanoes
Robert B. Symonds, C. J. Janik, William C. Evans, B.E. Ritchie, Dale Counce, R.J. Poreda, Mark Iven
2003, Open-File Report 2003-435
Between 1992 and 1998, we sampled gas discharges from ≤173°C fumaroles and springs at 12 quiescent but potentially restless volcanoes in the Cascade Range and Aleutian Arc (CRAA) including Mount Shasta, Mount Hood, Mount St. Helens, Mount Rainier, Mount Baker, Augustine Volcano, Mount Griggs, Trident, Mount Mageik, Aniakchak Crater, Akutan,...
Mass balance, meteorology, area altitude distribution, glacier-surface altitude, ice motion, terminus position, and runoff at Gulkana Glacier, Alaska, 1996 balance year
Rod S. March
2003, Water-Resources Investigations Report 2003-4095
The 1996 measured winter snow, maximum winter snow, net, and annual balances in the Gulkana Glacier Basin were evaluated on the basis of meteorological, hydrological, and glaciological data. Averaged over the glacier, the measured winter snow balance was 0.87 meter on April 18, 1996, 1.1 standard deviation below the long-term...
Multibeam bathymetry and selected perspective views of Glacier Bay, Alaska
Paul R. Carlson, Philip N. Hooge, Guy R. Cochrane, Andrew J. Stevenson, Peter Dartnell, J. Christopher Stone
2003, Water-Resources Investigations Report 2003-4141
Preliminary geologic map of Kanaga Volcano, Alaska
T. P. Miller, C. F. Waythomas, C.J. Nye
2003, Open-File Report 2003-113
Kanaga Volcano is a 1,300 m (4,287-foot) high, historically active cone-shaped stratovolcano located on the north end of Kanaga Island in the Andreanof Islands Group of the Aleutian Islands. The volcano is undissected, symmetrical in profile, and is characterized by blocky andesitic lava flows, with well-developed levees and steep flow...
Preliminary volcano-hazard assessment for Great Sitkin Volcano, Alaska
Christopher F. Waythomas, Thomas P. Miller, Christopher J. Nye
2003, Open-File Report 2003-112
Great Sitkin Volcano is a composite andesitic stratovolcano on Great Sitkin Island (51°05’ N latitude, 176°25’ W longitude), a small (14 x 16 km), circular volcanic island in the western Aleutian Islands of Alaska. Great Sitkin Island is located about 35 kilometers northeast of the community of Adak on Adak...
A genetic study to aid in restoration of murres, guillemots and murrelets to the Gulf of Alaska
Vicki L. Friesen, John F. Piatt
2003, Report
Genetic data are needed to aid in restoring several species of seabirds to the Gulf of Alaska. We analyzed sequence variation in mitochondrial DNA, microsatellite DNA and nuclear introns in samples of commom murres (Uria aalge), pigeon guillemots (Cepphus columba) and marbled murrelets (Brachyramphus marmoratus) from throughout the North Pacific....
Population status of Kittlitz's and Marbled Murrelets and surveys for other marine bird and mammal species in the Kenai Fjords area, Alaska
Thomas I. van Pelt, John F. Piatt
2003, Report
The Kittlitz's murrelet (Brachyramphus brevirostris) is a rare seabird that nests in alpine terrain and generally forages near tidewater glaciers during the breeding season. More than 95% of the global population breeds in Alaska, with the remainder occurring in the Russian Far East. A global population estimate using best-available data...
New mapping near Iron Creek, Talkeetna Mountains, indicates presence of Nikolai greenstone
Jeanine M. Schmidt, Melanie B. Werdon, Bruce R. Wardlaw
2003, Alaska Division of Geological & Geophysical Surveys Professional Reports DGGS PR 120-J
Detailed geologic mapping in the Iron Creek area, Talkeetna Mountains B-5 Quadrangle, has documented several intrusive bodies and rock units not previously recognized and has extended the geologic history of the area through the Mesozoic and into the Tertiary era. Greenschist-facies metabasalt and metagabbro previously thought to be Paleozoic are...
Population genetic structure of Santa Ynez rainbow trout – 2001 based on microsatellite and mtDNA analyses
Jennifer L. Nielsen, Christian E. Zimmerman, Jeffrey B. Olsen, Talia Wiacek, E.J. Kretschmer, Glenn M. Greenwald, John K. Wenburg
2003, Report
Microsatellite allelic and mitochondrial DNA (mtDNA) haplotype diversity are analyzed in eight rainbow trout (Oncorhynchus mykiss) collections: two from tributaries flowing into the upper Santa Ynez River watershed at Gibraltar Reservoir (Camuesa and Gidney creeks); three from tributaries between Gibraltar and Jameson reservoirs (Fox, Blue Canyon, and Alder creeks); one...
Studies of Alaskan volcanoes using synthetic aperature radar and Landsat imagery
Russell P. Rykhus, Zhong Lu
2003, Conference Paper, Technology- Converging at the top of the world
Approximately 10 percent of the world’s active volcanoes are located in the Alaskan Aleutian arc and produce about 3-4 explosive eruptions per year. Even with this high amount of volcanic activity, the remote locations and harsh environments of the Aleutian volcanoes conspire to keep them among some of the most...
Alaska resource data file: Nabesna quadrangle
Travis L. Hudson
2003, Open-File Report 2003-446
Descriptions of the mineral occurrences shown on the accompanying figure follow. See U.S. Geological Survey (1996) for a description of the information content of each field in the records. The data presented here are maintained as part of a statewide database on mines, prospects and mineral occurrences throughout Alaska....
Alaska resource data file: McCarthy quadrangle
Travis L. Hudson
2003, Open-File Report 2003-404
Descriptions of the mineral occurrences shown on the accompanying figure follow. See U.S. Geological Survey (1996) for a description of the information content of each field in the records. The data presented here are maintained as part of a statewide database on mines, prospects and mineral occurrences throughout Alaska....
40Ar/39Ar geochronology of igneous rocks in the Taylor Mountains and Dillingham quadrangles in SW Alaska
Alexander Iriondo, Michael J. Kunk, Frederic H. Wilson
2003, Open-File Report 2003-421
No abstract available....
The natural dispersal of metals to the environment in the Wulik River-Ikalukrok Creek area, western Brooks Range, Alaska
K.D. Kelley, Travis Hudson
2003, Fact Sheet 107-03
No abstract available....
Alaska resource data file: Wiseman quadrangle
Joe M. Britton
2003, Open-File Report 2003-447
Descriptions of the mineral occurrences shown on the accompanying figure follow. See U.S. Geological Survey (1996) for a description of the information content of each field in the records. The data presented here are maintained as part of a statewide database on mines, prospects and mineral occurrences throughout Alaska....
Station corrections for the Katmai Region Seismic Network
Cheryl K. Searcy
2003, Open-File Report 2003-403
Most procedures for routinely locating earthquake hypocenters within a local network are constrained to using laterally homogeneous velocity models to represent the Earth's crustal velocity structure. As a result, earthquake location errors may arise due to actual lateral variations in the Earth's velocity structure. Station corrections can be used to...
Map of glacial limits and possible refugia in the southern Alexander Archipelago, Alaska, during the late Wisconsin glaciation
Paul E. Carrara, Thomas A. Ager, James F. Baichtal, D. Paco VanSistine
2003, Miscellaneous Field Studies Map 2424
During the late Wisconsin glaciation (circa 26,000-13,000 carbon-14 yr BP) the Cordilleran glacier complex formed vast ice fields and large glaciers along the crest of the Coast Mountains. As these glaciers flowed west to the Pacific Ocean, they were joined by local glaciers...
Alaskan North Slope petroleum systems
L. B. Magoon, P. G. Lillis, K. J. Bird, C. Lampe, K. E. Peters
2003, Open-File Report 2003-324
Six North Slope petroleum systems are identified, described, and mapped using oil-to-oil and oil-to-source rock correlations, pods of active source rock, and overburden rock packages. To map these systems, we assumed that: a) petroleum source rocks contain 3.2 wt. % organic carbon (TOC); b) immature oil-prone source rocks have hydrogen...
Petroleum source potential of the Lower Cretaceous mudstone succession of the NPRA and Colville Delta area, North Slope Alaska, based on sonic and resistivity logs
Margaret A. Keller, Kenneth J. Bird
2003, Open-File Report 2003-325
Resource assessment of the North Slope of Alaska by the U. S. Geological Survey includes evaluation of the petroleum source potential of Mesozoic and Cenozoic rocks using the delta log R technique (Passey and others, 1990). Porosity and resistivity logs are used in combination with thermal maturity data to produce...
Association of deformation and fluid events in the central Brooks Range fold-and-thrust belt, Northern Alaska
Thomas E. Moore, Christopher J. Potter, Paul B. O'Sullivan, Kevin L. Shelton, Michael B. Underwood
2003, Open-File Report 2003-327
Ocentral Brooks Range consists of two superposed north-directed contractional orogens, one formed between 140-120 Ma and the other at ~60-45 Ma. The older orogen was an arc-continent collisional zone characterized by far-traveled allochthons and relatively low structural relief. The younger orogen is a retroarc thrust belt with relatively low amounts...
Distribution, richness, quality, and thermal maturity of source rock units on the North Slope of Alaska
K. E. Peters, K. J. Bird, M.A. Keller, P. G. Lillis, L. B. Magoon
2003, Open-File Report 2003-328
Four source rock units on the North Slope were identified, characterized, and mapped to better understand the origin of petroleum in the area: Hue-gamma ray zone (Hue-GRZ), pebble shale unit, Kingak Shale, and Shublik Formation. Rock-Eval pyrolysis, total organic carbon analysis, and well logs were used to map the present-day...
