Sheep Mountain is a textbook example of an anticline fold. The series stars Shaun — a sheep previously featured in the 1995 short film A Close Shave and in the Shopper 13 short film from the 2002 Wallace and Gromit's Cracking Contraptions series — and his madcap adventures around a small farm as the leader of his flock. @article{osti_6084236, title = {Surface and subsurface analysis of Sheep Mountain anticline, Wyoming}, author = {Abercrombie, S}, abstractNote = {The Sheep Mountain area, in the southwest Wind River Basin, is the up plunge closure of the Derby Dome-Winkleman Dome producing trend of an echelon folds which comprise the first line of folding down the northeast flank of the Wind River Mountains. Shown above is a railroad cut that runs through this northwest-southeast trending anticline. Categories: When the sheep's stable's roof is broken, rain pours in. Sheep Mountain Anticline The Sheep Mountain anticline, in the Bighorn Basin of Wyoming, formed during the Laramide orogeny. Part of the Sheep Mountain Anticline near Greybull, Wyoming. Lidar data were collected on July 13, 2007 of the Sheep Mountain Anticline. east-northeast trending Spring Creek fault which has possible left lateral offset. NCALM Seed. These faults achieve an additional structural relief on the crest of the anticline. 2. Little Sheep Mountain is a doubly-plunging asymmetric anticline in the northeastern Bighorn Basin, Wyoming. A major change in the trend of the anticlinal crest within Sheep Mountain, suggests development of separate left-stepping en echelon closures at depth. The Sheep Mountain anticline, in the Bighorn Basin of Wyoming, formed during the Laramide orogeny. Field observations of sheared fractures and bedding planes in various structural locations across Sheep Mountain Anticline, Wyoming, document the role of fracture reactivation and flexural slip in folding related deformation. mechanisms in a basement‐cored anticline: Sheep Mountain Anticline, Wyoming.” Tectonics 29.1 (2010). The structural style exposed in the Palozoic reservoir rocks of Sheep Mountain may serve as a model for the other structural features in the Wind River Basin. The Laramide orogeny was characterized by a NE–SW compression (Engebretson et al., 1985; Bird, 2002). North of this fault, … The Clark Fork is remarkable in that it consists of a dazzling array of en echelon wrench anticlines. The Ancestral Bighorn River established a course over the landscape while the anticline was still buried at depth. Take a look at the Big Horn River that cuts through the middle of Sheep Mountain. This panorama was taken on the northern half of the Sheep Mountain anticline. This panorama was taken on the northern half of the Sheep Mountain anticline. The basin contains an anticline-syncline pair that is en echelon with the axes of the Burkes Garden and Bane anticlines and that trends about 20/degree/ more northerly than the regional strike of the bounding thrusts. The basin is bounded on the northwest and southeast by the southeast-dipping Narrows and Saltville thrust faults, respectively. The Sheep Mountain area, in the southwest Wind River Basin, is the up plunge closure of the Derby Dome-Winkleman Dome producing trend of an echelon folds which comprise the first line of folding down the northeast flank of the Wind River Mountains. The survey area is located in north-central Wyoming, about 14 kilometers northwest of the town of Greybull. Anticlines in the basin provide subsurface structural traps for oil and natural gas, several of which produce from the Mississippian Madison Formation, a world-class fractured carbonate reservoir. An anticline is a geologic formation where the strata slope downward on either side of a crest, and this particular mountain is one of the more famous examples of this kind of … They are arranged en, Surface and subsurface analysis of Sheep Mountain anticline, Wyoming. School has begun, which means that I will have less time to go to the field. Journal of Structural Geology 28.5 (2006): 850-867. Curvature and fracturing at Sheep Mountain anticline Geosphere, December 2007 409 and an upper unit of interbedded limestone and dolomite (Ladd, 1979; Hennier, 1984). School Begins! NCALM Seed. Northwest. An anticline is a geologic formation where the strata slope downward on either side of a crest, and this particular mountain is one of the more famous examples of this kind … This third geometry will account for the apparent en echelon arrangement ofMud Creek - Middle Mud Creek Anticlines. Observations of shearing also constrain spatial and temporal variations of the stress state across the anticline during folding. School has begun, which means that I will have less time to go to the field. The surface sedimentary rock formations that are exposed in the fold, range in age from 66-360 million years. Overview. Sheep Mountain Anticline An excellent example of an asymmetric doubly-plunging antcline. The Sheep Mountain area, in the southwest Wind River Basin, is the up plunge closure of the Derby Dome-Winkleman Dome producing trend of an echelon folds which comprise the first line of folding down the northeast flank of the Wind River Mountains. Spectacular exposures of thrusting in the core of concentric anticlines as models for oil exploration, Domal structure in Devonian rocks of Kimberling basin, Bland County, Virginia, Structure and geologic history of late Cenozoic Eel River basin, California, Clark Fork lineament, west-central Montana: A model for wrench anticlines. Many of the ranges that form the Rocky Mountains also took shape at this time. Greybull, WY: Sheep Mountain Anticline. This model shows the northern end of Sheep Mountain in central Wyoming. Geologically speaking, Sheep Mountain is an anticline which is a type of folded bedrock that has an arch-like shape with its oldest rocks at its core. Dec 4, 2013 - Tumblr is a place to express yourself, discover yourself, and bond over the stuff you love. Near Greybull, Wyoming is a long ridge called Sheep Mountain. It's where your interests connect you with your people. The Sheep Mountain Anticline is situated between the towns of Lovell and Greybull in the northwest part of Wyoming; its long, narrow, and perfectly straight crest is an easily recognizable sight from many areas around the Big Horn Basin. echelon along the Clark Fork lineament forming a series of wrench anticline umbrellas over a basement fault. The Bighorn River cuts the anticline normal to … Typical anticline. Garden and Bane domes through the Kimberling basin, as well as the presence in the basin of an anomalously thick Devonian clastic section, which has been ascribed by some authors to contemporaneous downwarp of a depositional syncline. Methods of Study Field observations for this study were begun in June 1976 and were completed by the end of August that same year. These folds indicate that northeast-southwest compression characteristic of the southern part of the basin is accompanied toward the north by right-lateral shear between the accretionary complex to the west and the basin to the east. Mud Creek and Middle Mud Creek Anticlines are two basement-controlled folds located on the footwall of the Mud Creek-North Owl Creek Fault zone. Little Sheep Mountain Anticline Number Three is a cultural feature (mine) in Big Horn County. Sheep Mountain Anticline, located on the eastern edge of the Bighorn Basin, Wyoming, is a well known NW–SE trending, asymmetric Laramide fold (Fig. ), plánování trasy, GPS a mnoho dalšího na mapy.cz. North of this fault, Mesozoic rocks are thrust to the southwest along a low angle, northeast-dipping out of the basin thrust, which obscures the en echelon bypass with Derby Dome. The northeastern margin of the offshore basin is cut by north to north-northwest-trending high-angle reverse faults that vertically offset basement rocks as much as 1300 m, west side down. It is 15 miles long and the involved rock formations, which were originally horizontal, have been bent and uplifted over 1000 feet. Mapa Sheep Mountain Anticline Number One Mine (Lom, důl) – detailní mapa okolí (základní, turistická, satelitní, panoramatická, atd. At its center lies a prominent 15 mile long ridge which corresponds to the double plunging anticline’s crest. The large fold seen in the sedimentary rocks at Sheep Mountain was created by crystalline basement rock uplifted along faults that parallel the long axis of the structure along the steeper east flank. Fly to “Greybull, Wyoming” and explore Sheep Mountain just to the North. Shaun the Sheep is a British stop-motion animated children's television series spin-off of the Wallace and Gromit franchise. Overview. Field observations of sheared fractures and bedding planes in various structural locations across Sheep Mountain Anticline, Wyoming, document the role of fracture reactivation and flexural slip in folding related deformation. The northwest end of Sheep Mountain also forms a left-stepping en echelon pattern with Derby Dome. The latest period of deformation in this part of the basin began during the middle Pleistocene and probably reflects north-northwestward migration of the Mendocino triple junction and encroachment of the Pacific plate. By looking at the landscape, determine which came first, the fold or the river. In the case of sheep mountain imagine that the area around the center of this image is eroded leaving a peak where the folded rocks are bent up. The town of Jackson, Wyoming is 13 miles (21 km) southwest of the peak. The Sheep Mountain Anticline is situated between the towns of Lovell and Greybull in the northwest part of Wyoming; its long, narrow, and perfectly straight crest is an easily recognizable sight from many areas around the Big Horn Basin. From Wikipedia, the free encyclopedia Sheep Mountain (11,244 feet (3,427 m)) is located in the U.S. state of Wyoming. Observations of shearing also constrain spatial and temporal variations of the stress state across the anticline during folding. 1. Fourteen wrench anticlines occur between Missoula and Helena. From Mapcarta, the free map. Following folding, a south-facing monocline formed along the entire length of the Clark Fork lineament, increasing from zero throw to about 5 km westward. It is a basement-cored thrust-fault related fold of Laramide age. Sheep Mountain Anticline conflict with one another. What other local feature might be present that would constrain this fold to a small geographic area? //-->, Earth Science Picture of the Day is a service of, Earth Science World Image Bank: Sheep Mountain Anticline, A Virtual Field Trip to the Virgin Anticline, North Antelope Rochelle Coal Mine, Wyoming. What type of fold is this? geology Because what are typically horizontal rock layers are here found tipped up and eroded what we were able to do as we hiked up the mountain was go through successively older layers of rock: we were hiking back through time. Photo taken on May 28, 2013. Regionally, basement rocks are unconformably overlain on land by a sedimentary sequence as much as about 4200 m thick that comprises the Bear River Formation (early and middle Miocene) and the Wildcat Group (late Miocene to middle Pleistocene) and offshore by broadly coeval upper Tertiary and Quaternary deposits as much as 3300 m thick. How can you tell (support your answer)? Exposed in the Jurassic section is a series of stacked thrust faults which die out downward into bedding. Northwest. - AAPG Bulletin (American Association of Petroleum Geologists); (United States). Platform: Airborne Lidar Survey Area: 87 km 2. Little Sheep Mountain Anticline Number Three - Cultural Feature (Mine) in Big Horn County. The photo shows the southwest end of the canyon cut by Bighorn River through the anticline’s core about 1/3 of the way along the ridge from its north end. Two doubly plunging anticlines lie along the strike of the basin. 3. Greybull, WY: Sheep Mountain Anticline. The Mowry shale crops out in a SE-plunging syncline at the right. The Sheep Mountain anticline (Wyoming, USA) is a well-exposed asymmetric, basement-cored anticline that formed during the Laramide orogeny in the early Tertiary. "Aerial view of the Sheep Mountain Anticline in Wyoming, USA. Thus, I must pick the areas I will go for fracture analysis wisely. Proposed model for the Sheep Mountain Anticline I was able to witness science at its best as Eric and Chris discussed alternate theories regarding the faulting under Sheep Mountain. Curvature and fracturing at Sheep Mountain anticline Geosphere, December 2007 409 and an upper unit of interbedded limestone and dolomite (Ladd, 1979; Hennier, 1984). Petrified Wood Occurrence, Sheep Mountain Anticline, Greybull, Big Horn Co., Wyoming, USA : Deposit of petrified wood discovered while prospecting near Sheep Mountain Anticline during field camp 2015, reported by Alex Venzke. Lower Ordovician rocks are exposed in the Burkes Garden dome to the southwest, and Lower Cambrian rocks are present in the core of the Bane dome to the northeast. The faults and associated fold both trend in a northwest to southeast direction for … Lidar data were collected on July 13, 2007 of the Sheep Mountain Anticline. Sheep Mountain is a textbook example of an anticline fold. The northwest plunge of Sheep Mountain is facilitated by compartmentalization across an east-northeast trending, high angle fault. As Sheep Mountain is a topographic high and barrier to streamflow, how was the river able to establish itself and eventually erode through the anticline? The surface sedimentary rock formations that are exposed in the fold, range in age from 66-360 million years. To better define it as a model for wrench anticlines, field mapping, gravity, and compilation were undertaken. Little Sheep Mountain Anticline Number Ten Mine is a quarry in Wyoming and has an elevation of 3963 feet. School Begins! 3.Application of the curvature threshold k t to the parabola y ¼ x 2 . Wrench anticlines adjacent to the Sapphire block margin were squeezed toward the northeast by the block and structurally modified. /* Archives 200x200 */ The Laramide orogeny was characterized by a NE–SW compression (Engebretson et al., 1985; Bird, 2002). Define anticline. Previous workers have postulated continuity between the Burkes, The Eel River basin formed as a late Cenozoic forearc basin floored by late Mesozoic and early Cenozoic allochthonous terranes (central and coastal belts of the Franciscan complex). The river came first since it cuts across strata of different resistance. The white Muddy sand of the black Thermopolis shale appears at the center of view and bends around the nose of the anticline to extend along strike at the left. 090-09: Sheep Mountain, Bighorn Basin, WY. Image credit: Wikipedia commons. Report: A Field-Based Geomechanical Study of the Formation, Deformation, and Internal Structure of Reservoir-Scale Sandstone Dikes, Sheep Mountain Anticline, WY (59th Annual Report on Research Under Sponsorship of The American Chemical Society Petroleum Research Fund): 59th Annual Report on Research Under Sponsorship of The American Chemical Society Petroleum Research Fund anticline n. Geology A fold with strata sloping downward on both sides from a common crest. The primary coordinates for Little Sheep Mountain Anticline Number Three places it … google_ad_slot = "7812802037"; Sheep Mountain, on the western edge of the field, forms a part of the foothills of the Wind River Moun­ tains. The Bighorn River cuts the anticline normal to … 2. A major change in the trend of the anticlinal crest within Sheep Mountain, suggests development of separate left-stepping en echelon closures at depth. 020200* - Petroleum- Reserves, Geology, & Exploration, 030200 - Natural Gas- Reserves, Geology, & Exploration. Little Sheep Mountain Anticline - Fracture Analysis Graduate thesis research pertaining to fracture analysis of the Little Sheep Mountain Anticline. What direction is it plunging? The field data gathered then form the basis for a paper titled: "Geologic History of the Sheep Mountain Region". Half way through the second semester of our year-long integrated Sed/Strat and Structure course we travel to Sheep Mountain, Wyoming where the students spend 5 days describing and measuring section and the constructing geologic and structural maps. The town of Jackson, Wyoming is 13 miles (21 km) southwest of the peak. Sheep Mountain Anticline is the most prominent topo- graphic feature. The third is that of a single, sinuous, low-angle basement thrust fault. PI: David Pollard, Stanford University. This summer two of my sons and I took a hike through the Jurassic time period. _GeographyLinks | Geography | Geology | Landforms |, Interact: var addthis_pub="usra";Share | Discuss on Facebook | Subscribe,