Publications
Filter Total Items: 2692
Geology of Seattle, a field trip
Seattle’s geologic record begins with Eocene deposition of fluvial arkosic sandstone and associated volcanic rocks of the Puget Group, perhaps during a time of regional strike-slip faulting, followed by late Eocene and Oligocene marine deposition of the Blakeley Formation in the Cascadia forearc. Older Quaternary deposits are locally exposed.Most of the city is underlain by up to 100 m of glacial
Authors
Ralph A. Haugerud, Kathy Goetz Troost, William T. Laprade
Data cleaning methodology for monthly water-to-oil and water-to-gas production ratios in continuous resource assessments
Petroleum production data are usually stored in a format that makes it easy to determine the year and month production started, if there are any breaks, and when production ends. However, in some cases, you may want to compare production runs where the start of production for all wells starts at month one regardless of the year the wells started producing. This report describes the JAVA program th
Authors
Brian A. Varela, Seth S. Haines, Nicholas J. Gianoutsos
The Iġnik Sikumi Field Experiment, Alaska North Slope: Design, operations, and implications for CO2−CH4 exchange in gas hydrate reservoirs
The Iġnik Sikumi Gas Hydrate Exchange Field Experiment was conducted by ConocoPhillips in partnership with the U.S. Department of Energy, the Japan Oil, Gas and Metals National Corporation, and the U.S. Geological Survey within the Prudhoe Bay Unit on the Alaska North Slope during 2011 and 2012. The primary goals of the program were to (1) determine the feasibility of gas injection into hydrate-be
Authors
Ray Boswell, David Schoderbek, Timothy S. Collett, Satoshi Ohtsuki, Mark White, Brian J. Anderson
A pressure-limited model to estimate CO2 injection and storage capacity of saline formations: Investigating the effects of formation properties, model variables and presence of hydrocarbon reservoirs
No abstract available.
Authors
Hossein Jahediesfanjani, Peter D. Warwick, Steven T. Anderson
Lidar-Based Rock-Fall Hazard Characterization of Cliffs
Rock falls from cliffs and other steep slopes present numerous challenges for detailed geological characterization. In steep terrain, rock-fall source areas are both dangerous and difficult to access, severely limiting the ability to make detailed structural and volumetric measurements necessary for hazard assessment. Airborne and terrestrial lidar survey methods can provide high-resolution data n
Authors
Brian D. Collins, Greg M.Stock
Element migration of pyrites during ductile deformation of the Yuleken porphyry Cu deposit (NW-China)
The strongly deformed Yuleken porphyry Cu deposit (YPCD) occurs in the Kalaxiangar porphyry Cu belt (KPCB), which occupies the central area of the Central Asian Orogenic Belt (CAOB) between the Sawu’er island arc and the Altay Terrane in northern Xinjiang. The YPCD is one of several typical subduction-related deposits in the KPCB, which has undergone syn-collisional and post-collisional metallogen
Authors
Tao Hong, Xing-Wang Xu, Jungang Gao, Stephen Peters, Jilei Li, Mingjian Cao, Peng Xiang, Chu Wu, Jun You
Control of landslide volume and hazard by glacial stratigraphic architecture, Northwest Washington state, USA
Landslide volumes span many orders of magnitude, but large-volume slides tend to travel
farther and consequently can pose a greater hazard. In northwest Washington State, USA, a
landscape abounding with landslides big and small, the recent occurrence of the large-volume
and tragically deadly State Route 530 (Oso) landslide is a stark reminder of the hazards
associated with glacial terraces lining
Authors
Jonathan Perkins, Mark E. Reid, Kevin M. Schmidt
By
Energy and Minerals Mission Area, Natural Hazards Mission Area, Energy Resources Program, Landslide Hazards Program, Mineral Resources Program, National Cooperative Geologic Mapping Program, National Laboratories Program, Science and Decisions Center, Geologic Hazards Science Center, Geology, Minerals, Energy, and Geophysics Science Center
Tectonic evolution
The middle Paleozoic through Present tectonic evolution of the Northern Cordillera is portrayed in a series of 15 Tectonic Model figures. These figures depict the successive stages of formation and accretion of orogenic collages along the western margin of the North American Plate (craton and craton margin) and adjacent marine areas. The orogenic collages are composed of terranes and overlap assem
Authors
Warren J. Nokleberg, James W.H. Monger, David B. Stone, Thomas K. Bundtzen, David W. Scholl
Post-9.45 Ma depositional and structural history of the Bear Canyon conglomerate between Indian Pass and Picacho State Recreation Area, southeastern California
No abstract available.
Authors
Jason Ricketts, L. Sue Beard, Ryan S. Crow, Kevin Coffey, Gordon B. Haxel
Influence of the Eastern California Shear Zone on deposition of the Mio-Pliocene Bouse Formation: Insights from the Cibola area, Arizona
The Eastern California Shear Zone (ECSZ) is a wide zone of late Cenozoic strike-slip faults and related diffuse deformation that currently accommodates ~20–25% of relative Pacific–North America plate motion in the lower Colorado River region (Fig. 1A; Dokka and Travis, 1990; Miller et al., 2001; Guest et al., 2007; Mahan et al., 2009). The ECSZ is kinematically linked southward to dextral faults i
Authors
Rebecca J. Dorsey, Brennan O'Connell, Mindy B. Homan, Scott E. K. Bennett
Geology and assessment of undiscovered oil and gas resources of the West Greenland-East Canada Province, 2008
The U.S. Geological Survey (USGS) recently assessed the potential for undiscovered oil and gas resources of the West Greenland-East Canada Province as part of the USGS Circum-Arctic Resource Appraisal program. The province lies in the offshore area between western Greenland and eastern Canada and includes Baffin Bay, Davis Strait, Lancaster Sound, and Nares Strait west of, and including, part of K
Authors
Christopher J. Schenk
Geology and assessment of undiscovered oil and gas resources of the Hope Basin Province, 2008
The Hope Basin, an independent petroleum province that lies mostly offshore in the southern Chukchi Sea north of the Chukotka and Seward Peninsulas and south of Wrangel Island, the Herald Arch, and the Lisburne Peninsula, is the largest in a series of postorogenic (successor) basins in the East Siberian-Chukchi Sea region and the only one with exploratory-well control and extensive seismic coverag
Authors
Kenneth J. Bird, David W. Houseknecht, Janet K. Pitman