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...
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...
Surficial geologic map of parts of the Misheguk Mountain and Baird Mountains quadrangles, Noatak National Preserve, Alaska
Thomas D. Hamilton
2003, Open-File Report 2003-367
The map area, which comprises part of the Noatak National Preserve, includes approximately the southern two-thirds of the Misheguk Mountain quadrangle and the northern one-third of the Baird Mountains quadrangle. It is centered on a belt of west-trending lowlands along the Noatak River which separates the De Long Mountains to...
Petroleum systems of the Alaskan North Slope: a numerical journey from source to trap
C. Lampe, K. E. Peters, L. B. Magoon, K. J. Bird, P. G. Lillis
2003, Open-File Report 2003-326
The complex petroleum province of the Alaskan North Slope contains six petroleum systems (Magoon and others, this session). Source rocks for four of these systems include the Hue-gamma ray zone (Hue-GRZ), pebble shale unit, Kingak Shale, and Shublik Formation. Geochemical data for these source rocks are investigated in greater detail...
Preliminary hydrodynamic analysis of landslide-generated waves in Tidal Inlet, Glacier Bay National Park, Alaska
Eric L. Geist, Matthias Jakob, Gerald F. Wieczoreck, Peter Dartnell
2003, Open-File Report 2003-411
A landslide block perched on the northern wall of Tidal Inlet, Glacier Bay National Park (Figure 1), has the potential to generate large waves in Tidal Inlet and the western arm of Glacier Bay if it were to fail catastrophically. Landslide-generated waves are a particular concern for cruise ships transiting...
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...
Deformation of the 2002 Denali Fault earthquakes, mapped by Radarsat-1 interferometry
Zhong Lu, Tim Wright, Charles W. Wicks Jr.
2003, Eos, Transactions, American Geophysical Union (84) 425-431
The magnitude 7.9 earthquake that struck central Alaska on 3 November 2002 was the largest strike-slip earthquake in North America for more than 150 years. The earthquake ruptured about 340 km of the Denali Fault system with observed right-lateral offsets of up to 9 m [Eberhart-Phillips et al., 2003] (Figure...
Correlates to survival of juvenile sea otters in Prince William Sound, Alaska, 1992-1993
Brenda E. Ballachey, James L. Bodkin, S. Howlin, A. M. Doroff, A.H. Rebar
2003, Canadian Journal of Zoology (81) 1494-1510
We estimated survival of sea otters (Enhydra lutris) for 1 year post weaning during 1992-1993 in Prince William Sound (PWS), location of the 1989 Exxon Valdez oil spill. We sampled 38 pups in eastern PWS (EPWS), an unoiled area occupied by sea otters for <15 years, and 33 pups from oiled western PWS (WPWS), occupied for >25 years. We compared survival between areas, sexes, and condition groups. We...
Reproductive maturation and senescence in the female brown bear
Charles C. Schwartz, Kim A. Keating, Harry V. Reynolds III, Victor G. Barnes Jr., Richard A. Sellers, J. E. Swenson, Sterling D. Miller, B. N. McLellan, Jeffrey A. Keay, Robert McCann, Michael Gibeau, Wayne F. Wakkinen, Richard D. Mace, Wayne Kasworm, Rodger Smith, Steven Herrero
2003, Ursus (14) 109-119
Changes in age-specific reproductive rates can have important implications for managing populations, but the number of female brown (grizzly) bears (Ursus arctos) observed in any one study is usually inadequate to quantify such patterns, especially for older females and in hunted areas. We examined patterns of reproductive maturation and senescence...
Unified Ecoregions of Alaska: 2001
Gregory J. Nowacki, Page Spencer, Michael Fleming, Terry Brock, Torre Jorgenson
2003, Open-File Report 2002-297
Unified Ecoregions of Alaska map portrays major ecosystems of the state of Alaska and neighboring portions of Canada and Russia. The word "Unified" in the title refers to the interdisciplinary, interagency, and international effort to derive this broad-scale ecosystem map. The ecoregions, as portrayed on this dataset , are large...
Brookian structural plays in the National Petroleum Reserve, Alaska
Christopher J. Potter, Thomas E. Moore
2003, Open-File Report 2003-266
As part of the U.S. Geological Survey assessment of undiscovered oil and gas resources in the National Petroleum Reserve-Alaska (NPRA), two structural plays were assessed in thrust-faulted and folded Upper Cretaceous rocks of the Brookian megasequence. These are the Brookian Topset Structural Play and the Torok Structural Play, located in the Brooks Range foothills...
Density and magnetic susceptibility values for rocks in the Talkeetna Mountains and adjacent region, south-central Alaska
Elizabeth A. Sanger, Jonathan M. G. Glen
2003, Open-File Report 2003-268
This report presents a compilation and statistical analysis of 306 density and 706 magnetic susceptibility measurements of rocks from south-central Alaska that were collected by U.S. Geological Survey (USGS) and Alaska Division of Geological and Geophysical Surveys (ADGGS) scientists between the summers of 1999 and 2002. This work is a...
Magnetotelluric data in the Delta River mining district, near the Tangle Lakes area of southcentral Alaska
Louise Pellerin, Jay Sampson
2003, Open-File Report 2003-238
No abstract available....
Estimating annual high-flow statistics and monthly and seasonal low-flow statistics for ungaged sites on streams in Alaska and conterminous basins in Canada
Jeffrey B. Wiley, Janet H. Curran
2003, Water-Resources Investigations Report 2003-4114
Methods for estimating daily mean flow-duration statistics for seven regions in Alaska and low-flow frequencies for one region, southeastern Alaska, were developed from daily mean discharges for streamflow-gaging stations in Alaska and conterminous basins in Canada. The 15-, 10-, 9-, 8-, 7-, 6-, 5-, 4-, 3-, 2-, and 1-percent duration...
Structural plays in Ellesmerian sequence and correlative strata of the National Petroleum Reserve, Alaska
Thomas E. Moore, Christopher J. Potter
2003, Open-File Report 2003-253
Reservoirs in deformed rocks of the Ellesmerian sequence in southern NPRA are assigned to two hydrocarbon plays, the Thrust-Belt play and the Ellesmerian Structural play. The two plays differ in that the Thrust-Belt play consists of reservoirs located in allochthonous strata in the frontal part of the Brooks Range fold-and-thrust...
Geophysical identification and geological Implications of the southern Alaska magnetic trough
R. W. Saltus, T. L. Hudson, Frederic H. Wilson
2003, Open-File Report 2003-200
The southern Alaska magnetic trough (SAMT) is one of the fundamental, crustal-scale, magnetic features of Alaska. It is readily recognized on 10 km upward-continued aeromagnetic maps of the state. The arcuate SAMT ranges from 30 to 100 km wide and extends in two separate segments along the southern Alaska margin...
Preliminary assessment of landslide-induced wave hazards: Tidal Inlet, Glacier Bay National Park, Alaska
Gerald F. Wieczorek, Matthias Jakob, Roman J. Motyka, Sandra L. Zirnheld, Patricia Craw
2003, Open-File Report 2003-100
A large potential rock avalanche above the northern shore of Tidal Inlet, Glacier Bay National Park, Alaska, was investigated to determine hazards and risks of landslide-induced waves to cruise ships and other park visitors. Field and photographic examination revealed that the 5 to 10 million cubic meter landslide moved between...
Revised Cretaceous and Tertiary stratigraphic nomenclature in the Colville Basin, Northern Alaska
Charles G. Mull, David W. Houseknecht, Kenneth J. Bird
2003, Professional Paper 1673
A revised stratigraphic nomenclature is proposed for Cretaceous and Tertiary geologic units of the central and western North Slope of Alaska. This revised nomenclature is a simplified and broadly applicable scheme suitable for a suite of digital geologic quadrangle maps being prepared jointly by the U.S. Geological Survey and the...
Preliminary geologic map of the northeast Dillingham quadrangle (D-1, D-2, C-1, and C-2), Alaska
Frederic H. Wilson, Travis L. Hudson, Donald Grybeck, Douglas B. Stoeser, Cindi C. Preller, Damon Bickerstaff, Keith A. Labay, Marti L. Miller
2003, Open-File Report 2003-105
Open-File Report 03-105 contains a digital geologic map database for the northeast part of the Dillingham 1:250,000-scale quadrangle, specifically the D-1, D-2, C-1, and C-2 1:63,360-scale map sheets. The report includes:A Postscript file showing the geologic map on a topographic and land-grid base, and containing a Correlation of Map Units...
Alaska resource data file: Black River quadrangle
Karen H. Clautice
2003, Open-File Report 2003-53
No abstract available....
Digital depth horizon compilations of the Alaskan North Slope and adjacent Arctic regions
Richard W. Saltus, Kenneth J. Bird
2003, Open-File Report 2003-230
Data have been digitized and combined to create four detailed depth horizon grids spanning the Alaskan North Slope and adjacent offshore areas. These map horizon compilations were created to aid in petroleum system modeling and related studies. Topography/bathymetry is extracted from a recent Arctic compilation of global onshore DEM and...
An Account of Preliminary Landslide Damage and Losses Resulting from the February 28, 2001, Nisqually, Washington, Earthquake
Lynn M. Highland
2003, Open-File Report 2003-211
The February 28, 2001, Nisqually, Washington, earthquake (Mw = 6.8) damaged an area of the northwestern United States that previously experienced two major historical earthquakes, in 1949 and in 1965. Preliminary estimates of direct monetary losses from damage due to earthquake-induced landslides is approximately $34.3 million. However, this figure does...
Data report of aftershocks of the 03 November 2002, Mw 7.9 Denali Fault earthquake recorded near the fault rupture at the Richardson Highway and Alyeska Pipeline
David L. Carver, Timothy Plucinski, A.D. Frankel, Erdal Sa
2003, Open-File Report 2003-158
No abstract available....
Descriptions of mineral occurrences and interpretation of mineralized rock geochemical data in the Stikine geophysical survey area, Southeastern Alaska
Cliff D. Taylor
2003, Open-File Report 2003-154
Detailed descriptions of some of the more significant mineral occurrences in the Stikine Airborne Geophysical Survey Project Area are presented based upon site-specific examinations by the U.S. Geological Survey in May of 1998. Reconnaissance geochemical data on unmineralized igneous and sedimentary host rocks, and mineralized rocks are also presented and...
Alaska resource data file: Hughes quadrangle
Joe Britton
2003, Open-File Report 2003-58
No abstract available....
