laramie mountains geology

The interactive Geology of Yellowstone Map ... Jade has been found in Wyoming as far west as the Wind River Range and as far east as Guernsey and the Laramie Mountains. The Laramie Mountains are bisected by the Laramie River, which cuts a canyon through the mountains roughly due west of Wheatland, and then continues its generally eastward course to join the North Platte River near the town of Fort Laramie. At any rate, the anorthosite was intruded into the Laramie Mountains during the ~1.4 Ga igneous event. Read about a recent update the WSGS made to is interactive Geology of Wyoming map. II., Rocky Mountain Geology 38: 1-27. [2] It was deposited on a coastal plain and in coastal swamps that flanked the Western Interior Seaway. Blackstone, D. L. 1971. Its elevation of 2,200 m (7,200 feet) assures an invigorating climate. Interstate 80 and the Union Pacific Railroad cross the range between Cheyenne and Laramie on an outlying ramp of the High Plains called the "Gangplank"..mw-parser-output .geo-default,.mw-parser-output .geo-dms,.mw-parser-output .geo-dec{display:inline}.mw-parser-output .geo-nondefault,.mw-parser-output .geo-multi-punct{display:none}.mw-parser-output .longitude,.mw-parser-output .latitude{white-space:nowrap}41°05′56″N 105°06′46″W / 41.09889°N 105.11278°W / 41.09889; -105.11278 (The Gangplank), www.mobilewiki.org Laramie Mountains Laramie Mountains. 861 pp. Rocky Mountain Geology (9) Geology (7) GSA Bulletin (5) American Mineralogist ... Medicine Bow Mountains, and Laramie Range of southern Wyoming. Non-dinosaur vertebrates also occur (Carpenter 1979). North of the Cheyenne belt, Archean granite and gneiss of the … The Laramie Mountains of south‐eastern Wyoming contain two metamorphic domains that are separated by the 1.76 Ga. Laramie Peak shear zone (LPSZ). Reynolds (eds), Paleontology and Stratigraphy of Laramide Strata in the Denver Basin, Pt. Mineral deposits in the North Laramie Mountains Continued. The entire anorthosite [not named] was mapped (geologic map) in the Laramie Mountains by K. F. Billings (1930, AJS, 5th series, v. 19, p.305-315, p.373-403). This unique geologic feature known as the “Gangplank,” provides a gradual ascent westward through the mountains. To the north, it’s been reported in the Wind River Basin and near Thermopolis in the Bighorn Basin. The Laramie Formation is a geologic formation of Late Cretaceous (Maastrichtian) age, named by Clarence King in 1876 for exposures in northeastern Colorado, in the United States. The range is prominently visible from Interstate 25 between Casper and Cheyenne. In K.R. The Laramie Range is, in general, an un symmetric anticlinal moun­ tain range trending southward from central Wyoming across the eastern part of the state and joining the Colorado Front Range. Snoke, AW 1993. The Laramie Mountains are a range of moderately high peaks on the eastern edge of the Rocky Mountains in the U.S states of Wyoming and Colorado.The range is the northernmost extension of the line of the ranges along the eastern side of the Rockies, and in particular of the higher peaks of the Front Range directly to the south. Although specific sequences south of the belt have not yet been correlated between the Sierra Madre, Medicine Bow Mountains, and Laramie Range, similarities in age, lithology, and major element chemistry suggest that they are part of a single geologic terrane. II., Rocky Mountain Geology 38: 101-120. 2nd Ed., fig. Image: After Houston, R.S., 1969, Aspects of the Geologic History of Wyoming Related to the Formation of Uranium Deposits: Contributions to Geology, Vol. Johnson, R.G. [15] Dicot angiosperms dominate, with lesser amounts of ferns, palms, and herbaceous lycopods. 19 from “Geologic Excursions to the Rocky Mountains and Beyond,” field trip guidebook of the 1996 Annual Meeting of the Geological Society of America. From the crest of the Laramie Mountains the route wound down to the Laramie Basin. 55:1-90. Bulletin of the Geological Survey of Wyoming. U.S. Geological and Geographical Survey. This means geologists will compile existing geologic mapping and generate new mapping where needed within the quadrangle. The mountains formed during the Laramide orog- eny, a mountain-building event that began about 70 million years ago. J. Wiley & Sons, NY. She stated: 1.) The southern part is generally drier and much more open, with little or no forest except for the southern end at Pole Mountain and surrounding area, where the interesting granite outcrops at Vedauwoo provide climbing practice and grand picnic scenery. Weishampel, David B.; Dodson, Peter; and Osmólska, Halszka (eds. Southwest Wyoming: South end of Wind River Range--Siliceous, arkosic, and locally radioactive sandstone, claystone, and conglomerate. Geologic history of Wyoming within the tectonic framework of the North American Cordillera, in Snoke, AW, Steidtmann, JR, and Roberts, SM, eds. The mountains consist of a series of Precambrian Sherman granite monadnocks rising above a broad erosion surface that form extensive unwooded parks whose surfaces are generally at about 7,000 feet (2,100 m) above sea level. In 1865, while scouting for routes through the Rocky Mountains … Johnson, K. R., Reynolds, M.L., Werth, K.W., and Thomasson, J.R. 2003. [3] It contains coal, clay and uranium deposits, as well as plant and animal fossils, including dinosaur remains. 402. The elevation is lowest, about 4,500 feet (1,400 m) (1370 m), along the North Platte River. Reynolds (eds), Paleontology and Stratigraphy of Laramide Strata in the Denver Basin, Pt. [3], The Laramie Formation also hosts uranium deposits. The Laramie Mountains are part of the central Rocky Mountains in southeastern Wyoming. Conifers are rare. Vertebrate fauna of the Laramie Formation (Maastrichtian), Weld County, Colorado. Palynology and palynostratigraphy of Maastrichtian, Paleocene, and Eocene strata in the Denver Basin, Colorado. [5] Clay mining began in the Golden, Colorado area in 1877 and continued until the mid-twentieth century. 5 Economic geology of the North Laramie Mountains, Converse and Albany counties, Wyo. Cary, M., 1917. 130 miles long and 20 - 25 miles wide. Although the Laramie Basin presents considerable variety of con­ The high peaks of the range, which are much lower than those commonly associated with the Rocky Mountains, rise abruptly above the surrounding peneplain to altitudes between 8,000 feet (2,400 m) and 9,500 feet (2,900 m) above sea level, with the exceptions of Laramie Peakin Wy… (2004). In 1873, Edward D. Cope accompanied Ferdinand V. Hayden, who was leader of the U.S. Geological and Geographical Survey of the Territories. Raynolds and M.L. They are named after the Laramie River, which cuts through the range from southwest to northeast and joins the North Platte River east of the range in eastern Wyoming. The mountains … Fossil leaves are abundant, especially in the shales and sandstones associated with coal. Blackstone, D.L., Jr., 1996, Structural geology of the Laramie Mountains, southeastern Wyoming and northeastern Colorado: Wyoming State Geological Survey Report of Investigations 51, 28 p., 3 pls., scale 1:500,000. Rock River, Albany, Laramie, and Platte counties: The integrated surficial and bedrock geologic map is a compilation project. Bedrock geology of the Golden Quadrangle, Colorado. The route of the expedition included eastern Colorado where Cope collected specimens in what is now the Laramie Formation along Bijou Creek on the east side of the Denver Basin (Cope, 1874). Continued. The highest peaks (above 8,000 feet) are much smaller than the high peaks of the mountains to the west and south. The mountains in turn give their name to the Laramide orogeny, the uplift of the North American Plate approximately 70 million years ago that created the present Rocky Mountains. [7], It is estimated that about 130 million short tons of sub-bituminous coal were mined from the Laramie Formation between 1884 and 1979, mostly from seams in the lower part of the formation. U.S.Geographical and Geological Survey. The high peaks of the range, which are much lower than those commonly associated with the Rocky Mountains, rise abruptly above the surrounding peneplain to altitudes between 8,000 feet (2,400 m) and 9,500 feet (2,900 m) above sea level, with the exceptions of Laramie Peak in Wyoming which tops out at 10,274 feet (3,132 m) and South Bald Mountain in Colorado rising to 11,007 feet (3,355 m). Berge von Laramie) sind eine Bergkette am Ostrand der Rocky Mountains in den US-Bundesstaaten Wyoming und Colorado. Three principal life zones are represented in the Laramies: Upper Sonoran, Transition and Canadian. The range is the northernmost extension of the line of the ranges along the eastern side of the Rockies, and in particular of the higher peaks of the Front Range directly to the south. They consist of metavolcanic units, metagraywacke, pelitic schist and gneiss, amphibolite, and felsic to mafic intrusive rocks that locally resemble rocks of central Colorado. (By some definitions the Laramies are only in Wyoming.) Geology; by state; Wyoming geologic units; Geologic units in Laramie county, Wyoming. Magnetostratigraphyof Upper Cretaceous (Maastrichtian) to lower Eocene strata of the Denver Basin,Colorado. The highest point in the Wyoming part of the range is Laramie Peak (10,274 feet), located in the center of the range. The northern Denver-Julesburg Basin is filled with a maximum of 12,000 feet of sedimentary rocks. Die Laramie Mountains (dt. Precambrian chronostratigraphy of Colorado. [6], The coal and clay deposits of the Laramie Formation were once economically important. The railroad camp there was named Laramie as well. Geology of Wyoming. [4][5] Nodular ironstone concretions occur in the mudstones that contain plant remains. The mountains consist of a series of Precambrian Sherman granite monadnocks rising above a broad erosion surface that form extensive unwooded parks whose surfaces are generally at about 7,000 feet (2,100 m) above sea level. Article navigation. Laramie formation uppermost Upper Cretaceous formation in Bighorn Mountains thought to underlie the plains between the foothills of the Bighorns to the Black Hills in the Powder River basin and Williston basin. OF-96-04-19D. Laramie lies in a broad flat-bottomed basin with steep dips on the west slope of the Bighorn uplift. The Laramie Mountains are crossed by the deep can­ yons of Laramie and North Laramie rivers, north of which they rise into the prominent range culminating in Laramie Peak. The Laramie Mountains begin in northern Colorado and extend discontinuously into southeastern Wyoming between Cheyenne and Laramie and northward to Casper. Elimination of artifacts in reprocessing allows for interpretations of residual reflections that are consistent with mapped geology. A flora of Wyoming. It was deposited on a coastal plain and in coastal swamps that flanked the Western Interior Seaway. The formation can be divided into an unnamed lower member containing bedded sandstone, clay and coal; and an unnamed upper member composed predominately of 90 to 190 m of drab-colored mudstone, some sandstone, and thin coal beds. It rests conformably on the Fox Hills Sandstone and unconformably underlies the Arapahoe Conglomerate. Raynolds and M.L. North of these outcrops the mountains cross the shear zone and the rocks become older. The mountains rise 1,500 feet above the adjoining Laramie Basin to the west to an aver­ age elevation of about 8,000 feet. [1], The Laramie Formation is exposed around the edges of the Denver Basin and ranges from 400–500 feet (120–150 m) on the western side of the basin, and 200–300 feet (60–90 m) thick on the eastern side. When the Laramie Mountains were uplifted and formed, most of the overlying sedimentary rock of the Great Plains was eroded away - except for a narrow remnant extending into the mountains between Cheyenne and Laramie. Wyoming State Geological Survey Memoir 5:2-56. Thickness is thought to be several thousand feet. Raynolds and M.L. Macroscopic structure and microscopic kinematic indicators within the Cheyenne belt suggest that accretion of the Proterozoic … I., Rocky Mountain Geology 37: 173-187. It is sunny, dry, and smogless. The project will complete another important map at the 1:100,000 scale, a useful scale for regional geologic understanding. Part I. Bulletin of the University of Wyoming Agricultural Experimental Station. The granitic soils were formed from the erosion of the surrounding monadnocks and have an effective depth of less than 12 inches (30 cm). Many rocks display the laboradorensence of the mineral, and specimens are really nice when slabbed and polished. Stratigraphy and Life History. Carpenter, K. and Young, B. In K.R. The Leyden Coal Mine produced uranium for a few years as a byproduct of the coal mining. The mountains formed during the Laramide orog- eny, a mountain-building event that began about 70 million years ago. Geology; Customers Who Viewed This Product Also Viewed . Geology. Van Horn, R. 1957. Johnson, R.G. In K.R. Reynolds (eds), Paleontology and Stratigraphy of Laramide Strata in the Denver Basin, Pt. Overview of theLate Cretaceous, early Paleocene, and early Eocene megafloras of the Denver Basin, Colorado. Laramie Mountains, Wyoming Walter A. Sullivan Department of Geology and Geophysics, Department 3006, 1000 East University Avenue, University of Wyoming, Laramie, Wyoming 82071, U.S.A. (e-mail: wasulliv@wyo.edu) ABSTRACT The formation of L tectonites is little understood and scarcely studied; however, it is probably an important part of plastic deformation in the crust. [8], Cope named three species of dinosaurs without description: Cinodon arctatus (later changed to Cionodon arctatus), Polyonax mortuarius and Agathaumas milo (later renamed Hadrosaurus occidentalis). Nichols, D.J., and Fleming, R. F. 2002. Page 581. "3.4 Colorado, United States; 4. Hogbacks made of Paleozoic to Mesozoic age rocks flank much of the . Detailed analysis of COCORP seismic reflection data from the Laramie Mountains, Wyoming, shows that processing artifacts produce confusing patterns in a profile that crosses the mountain front. Page 216. Miocene lakes in the Granite Mountains and the Teton Range. The mountains … Outcrop of anorthosite east of Bosler, Wyoming, Laramie Range. Subsequent discoveries of dinosaurs occur through the formation, and include a nearly complete skull of Triceratops. [1] Some early sources indicated that the Hudsonian Zone occurs on Laramie Peak but there is nothing distinctive about either the flora or fauna on the top of this peak, for it consists of nothing but a large granite outcrop. She studied geology at Bryn Mawr and attended graduate school at the University of Wisconsin where she was the geology department’s first female student. Upper Miocene Rocks (Upper Miocene) at surface, covers 57 % of this area. Hogbacks made of Paleozoic to Mesozoic age rocks flank much of the . [13] The palynomorphs indicate an early Maastrichtian age (68-69 mya), which is supported by magnetostratigraphy. On the eastern and north eastern slopes of the range the prairie/mountain transition is very gentle at the south end (between Cheyenne and Laramie) and much more abrupt and broken farther north. The regions semiarid climate supports a short-grass prairie with cottonwoods and shrubs along stream banks. This page was last edited on 25 June 2020, at 18:23. South of the LPSZ lies the Palmer Canyon block, where apatite U–Pb ages are c. 1745 Ma and the rocks have undergone Proterozoic kyanite‐grade Barrovian metamorphism. *Hicks, J.F., Johnson, K.R., Obradovich, J. D., Miggins, D.P., and Tauxe, L. 2003. Carson and Drake discover a cave of gold that belongs to the Indians who are unaware of it, so they try to foment a war that will wipe out the Native Americans and claim the yellow metal. The rock is composed of Precambrian granite that rose up some 50 - 70 million years ago. The highest portions of the Laramie mountains are mostly in public ownership, forming part of the Medicine Bow-Routt and Roosevelt national forests. Porter, C. L. 1962. Laramie, WY. These specimens are currently in the American Museum of Natural History. Johnson, R.G. (See Uranium mining in Colorado), Fossil vertebrates from the Laramie Formation were among the first dinosaurs to be discovered in the American West (Carpenter and Young 2003). (See PL II, A.) Field trip no. GEOLOGIC EVOLUTION OF THE LARAMIE MOUNTAINS The Laramie Mountains, which lie between Cheyenne and Laramie, expose sedimentary rocks along their flanks and are cored by crys-talline Precambrian basement rocks that range in age from 1.43 to 1.78 billion years old. Geological Exploration of the Fortieth Parallel. Late Cretaceous dinosaurs from the Denver Basin, Colorado. "Table 11.1," in Weishampel, et al. Some of the material in the sandstones originated from silicic volcanoes far to the west. Close mobile search navigation. The Laramie Basin separates the Laramie Mountains from the Medicine Bow Mountains to the south and west, and its floor is above 7,000 feet (2,100 m) except for a few depressions and blowouts (such as Cooper Lake). The Laramie Mountains are part of the central Rocky Mountains in southeastern Wyoming. Fieldwork eventually took her to the Laramie Mountains. (2004). Report of the Geological Exploration of the Fortieth Parallel. With Charles Starrett, Jock Mahoney, Fred F. Sears, Marshall Reed. ): The Dinosauria, 2nd, Berkeley: University of California Press. Fossil pollen (palynomorphs) include bryophyte and pteridophyte spores, gymnosperm pollen, and abundant angiosperm pollen, including Aquilapollenites striatus, Ilexpollenites compactus, Interpollis cf. Laramie is a pleasant western community of approximately 27,000 situated on the Laramie Plains between the Laramie Mountains and the Medicine Bow Range. The mountains consist of a series of Precambrian Sherman granite monadnocks rising above a broad erosion surface that form extensive unwooded parks whose surfaces are generally at about 7,000 feet (2,100 m) above sea level. In K.R. Thirty million years later the land began to rise, forcing the sea to retreat. I., Rocky Mountain Geology 37: 135-163. Archean and Proterozoic rocks form the bulk of the mountain range due to late Cretaceous–early Eocene (Laramide) basement-involved uplift. Common plants include "Ficus" planicostata, "Myrica" torreyi, Sabalites sp., Platanites marginata, and Marmarthia pearsonii. BH; Black Hills, BHM: Bighorn Mountains, GM: Granite Mountains, LR: Laramie Range, MB: Medicine Bow Mountains, SM: Sierra Madre, TR: Teton Rang, WRR: Wind River Range. 1, p. 86 118. CONTENTS. Scientific Society Proceedings, v. 3, pt. The Laramie Range is appx. Traveler's guide to the geology of Wyoming. Bulletin USDA Biological Survey. The first train arrived on May 10, 1868, and the next day the line was closed by a snowstorm. Volume 2, Number 1 Johnson, R.G. [9], List of Fossil Vertebrates (data from Carpenter 1979;[10] Hutchinson and Holroyd 2003). Report on the vertebrate paleontology of northern Colorado. An extensive high plain and semi-desert extends from the Laramie Mountains south west as far as the Shirley Mountains. anorthosite of Precambrian age estimated to cover a 400 sq miles area about 36 miles long and 12 miles wide; 2.) Digital PDF download. Most of the clay was used to make bricks and tiles for building construction. Find Similar Products by Category. Life zone investigations in Wyoming. 1960. Uranium deposits also occur in sandstones of the Laramie Formation in Weld County, Colorado, and near the town of Grover, Colorado. Laramie Mountains, c. 1869. Johnson, R.G. Historical Geology. I., Rocky Mountain Geology 37:237-254. 42: 1-95. U.S. Geological and Geographical Survey of the Territories, "U.S. Geological Survey Professional Paper 1625-A, Chapter SD", https://en.wikipedia.org/w/index.php?title=Laramie_Formation&oldid=964475420, Creative Commons Attribution-ShareAlike License. The highest point in the range lies in the Colorado part of the mountains and is called South Bald Mountain at 11,003 feet. The High Plains subdivision border in southeastern Wyoming is the Hartville Uplift and the Laramie Mountains. Even so, the new town grew to a population of 2000 within two weeks, with most of its citizens arriving by train . The Laramie Mountains are a range of moderately high peaks on the eastern edge of the Rocky Mountains in the U.S states of Wyoming and Colorado. The Laramie Formation is a geologic formation of Late Cretaceous (Maastrichtian) age, named by Clarence King in 1876 for exposures in northeastern Colorado, in the United States. The division marks the southern end of the continuous coniferous forest in the range, and separates the range into two parts. Petrographic provenance analysis of Kiowa Core sandstone samples, Denver Basin, Colorado. Eldridge, G.H., 1888, On some stratigraphical and structural features of the country about Denver, Colorado: Colorado. Fission-track age about 27 Ma. Raynolds and M.L. Dunbar, C. O. On the western slopes the total relief is much less, as the floors of the three intermontane basins that border the Laramies on this side (Shirley, Hanna and Laramie basins) rarely drop below 7,000 feet (2,100 m). Relatively little surface mining was done. Contributions to Geology, University of Wyoming 17: 37-49. It contains coal, clay and uranium deposits, as well as plant and animal fossils, including dinosaur remains. The Laramie Mountains are shown highlighted in pink on a map of the western U.S. U.S. Route 14 Business (Woodstock, Illinois), Mariana Engracia Álvarez de Toledo Portugal y Alfonso-Pimentel. Shroba, R.R., and Carrara, P.E., 1996, Surficial geologic map of the Rocky Flats environmental technology site and vicinity, Jefferson and Boulder Counties, Colorado: U.S. Geological Survey Miscellaneous Investigations Series Map, I 2526.
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