...Figure 1. (A) Generalized surficial geologic map of Las Vegas Valley showing distribution of coarse- and fine-grained deposits, principal Quaternary faults, and earth fissure zones. (B) Geologic cross-section (A-A′) is modified from Maxey and Jameson (1948) and schematically illustrates...

... crossing the Sierra Nevada fault zone ( Kunkel and Chase, 1955 ; Dutcher and Moyle, 1973 ). Eventually, this water evaporates from the surface of the China Lake playa or is transpired by plants, completing the local hydrologic cycle. In a general sense, groundwater flow system in the area is similar...

...., 2014 ; Haller et al., 2015 ). The Eglington fault displacement history has also been attributed to aseismic processes, including climatically driven dewatering and subsequent differential hydrocompaction of fine-grained sediments at the interface with coarse-grained alluvial fan deposits ( Maxey...

... & Maxey (1978) reported on earth fissures from subsidence near Nellis Air Force Base in Las Vegas, Nevada. The area is called Nellis well field ( Fig. 6 ). Generally, the location of earth fissures in this area and some other areas in Las Vegas has been associated with existing rock faults ( Mindling...

... and EST205 and in outcrops in the Pagny-sur-Meuse and Maxey-sur-Vaise quarries ( Fig. 1 ). The Oxfordian limestones were studied using the following techniques: e-mail: [email protected] 24 1 2014 17 2 2015 Copyright © 2015, SEPM (Society for Sedimentary Geology...

... to map in the monotonous volcanic rocks north of the mine. Here, its trace was inferred from springs and numerous silicified and brecciated zones in the volcanic rocks. North of the intrusion the fault is represented by a fault-line scarp in Prospect Mountain Quartzite. Sporadic breccia zones...

... four layers are assumed to be confined aquifers. Nearly all of the groundwater supply in the valley comes from the developed-zone (or principal) aquifer, which is 200–300 m below the land surface ( Maxey and Jameson, 1948 ; Morgan and Dettinger, 1996 ). Only the developed-zone (or principal) aquifer...

... nuclear tests within a perched zone of saturation downward through a series of variably saturated, sparsely fractured and faulted Tertiary tuff units to a regional flow system. The hydrogeologic complexity of the site necessitated a multistage calibration effort to capture the dominant flow...

... was formed by right‐lateral strike‐slip displacement along the northwest‐striking LVV shear zone and east–west extensional tectonics. Strike‐slip and normal faults are characteristic of central Basin and Range extension. Figure  1 shows active faults in and around the LVV taken from the USGS Quaternary...

... converge into a single shallowly west-dipping fault zone along which the stratigraphic juxtaposition of Mississippian units over Middle Cambrian units and Late Cretaceous granite marks the zone of maximum attenuation. The distinct geometry of the arched, westward-converging, low-angle fault array is seen...

..., the contact between the pebble shale unit and the Upper Cretaceous shale has been thought to represent a major Cretaceous unconformity throughout northern Alaska (Detterman et al, 1975, p. 32) . Close inspection of the contact interval, which is marked by a transition zone from dark gray-black nonbentonitic...

... the major overthrusts. There is considerable interest in the Disturbed Belt because of the discovery of commercial amounts of hydrocarbons in the Overthrust belt in western Wyoming and northern Utah ( Maher, 1976 ). FIG. 1 —Index map showing major zone of overthrust faults, Disturbed Belt...

... the Liard Basin from the adjacent Horn River Basin ( Walsh et al. 2005 ; NEB et al. 2016 ). The Liard Line, a major northeast trending transfer fault zone, runs through the Liard Basin, and another feature, the Liard Thrust, is present proximal to Fort Liard ( Fig. 3 ) ( Douglas and Norris 1976 ; Grasby...

...John C. Crowell ABSTRACT During late Tertiary time a thick section of coarse and fine continental clastics accumulated in Ridge Basin. Deposition was concurrent with movement on the San Gabriel fault zone which delimited Ridge Basin on the southwest. Movement on this fault ceased in late Pliocene...

... of 3,278 ft and a horizontal migration of 387 ft to the northwest. The well was cored completely, but the fault indicated by the geophysical surveys was not penetrated. In DRB 11, a zone about 5 ft thick was found at a depth of 2,340 ft where many core fractures were present, and broken pieces of rock...

... £. 29° Epicenter ~ ~ \ ~ Salinian X; - o Block G f- 0 ~. Southern = j~_ Achve -e% 12o° 116° ,2o03o, "\ 55°45 -4- "' ~Coast RangeThrust ~kNeogeneThrust Fro. 1. Location map showing principal structural axes and survey stations. WCF = Waltham Canyon Fault; MFZ = Maxey Fault Zone; PS = Parkfield Syncline...

... faulting along the west flank of the ridge which extends north of Blue Mountain offsets the thrust plane toward the east. This fault zone extends about 2 miles along the western foot of the ridge and is characterized by a low fault-line scarp in many places. The fault zone does not coincide with the trace...

... Creek “anticline.” Rocks within the undeformed zone are interpreted as being buried to maximum depth and presently generating oil from the Hue shale, whereas rocks within the deformed zone have been thrust faulted, folded, and uplifted following burial to maximum paleotemperatures ( Magoon et al., 1987...

..., confined to sandstone intervals, extends to a depth of at least 2,500 ft. Calcitized gypsum exceptionally deficient in C 13 and light-carbon/heavy-oxygen cements directly overlie petroleum-productive zones near regions where fluids have superior vertical avenues of communication (faults and an unconformity...