Niobrara formation

The contact between the Carlile Shale and the overlying Niobrara Formation is marked by an unconformity in much of the outcrop area, but where an unconformity is not discernible, the boundary is typically placed at the first resistant, fine-grained limestone bed at the base of the Niobrara Formation. Gallery

Niobrara Total Petroleum System in the Southwestern ... - USGS. EN. English Deutsch Français Español Português Italiano Român Nederlands Latina Dansk Svenska Norsk Magyar Bahasa Indonesia Türkçe Suomi Latvian Lithuanian česk ...Writing a letter is an important skill to have, whether it be for business or personal reasons. Knowing the basics of letter writing format can help you create a professional and effective letter.Shale and shallow chalk reservoirs of the Upper Cretaceous Niobrara formation house dry non-associated gas. Gas is stratigraphically trapped inside fine-grained, low permeability, and high porosity chalks. Depths range here range from 800' to 3500' and averages 500' in thickness. Oil is produced from fracturing the Niobrara and immediate ...SPE 184848 Optimizing Well Spacing and Well Performance in the Piceance Basin Niobrara Formation by N. Li, Black Hills Exploration and Production, et al. Maria A. Capello, ...Nov 1, 2014 · The Cretaceous Niobrara Formation is one of the latest unconventional exploration targets in North America. In this paper, an overall Type-II marine organofacies with some variability is present within a core which consists of alternating marls and chalks, covering a maturity range of 0.8–1.0 %Rc (calculated vitrinite reflectance). Aug 24, 2009 · NIOBRARA LIMESTONE. The Pierre shale is underlain by the Niobrara limestone, but this formation does not reach the surface in the portion of Nebraska west of the one hundred and third meridian. As, however, it would be reached by deep borings for artesian water, some of its characteristics should be pointed out. Its thickness is about 50 feet. The Company spud the prospective Patterson 3H, a 1.35 mile horizontal well targeting the Niobrara formation on November 24, 2022 that reached a total vertical depth of 12,600 feet and finished ...Sections of the Upper Cretaceous (Coniacian to Campanian) Niobrara Formation in two cores from Kansas and Colorado, the Amoco Rebecca Bounds and USGS Portland 1, respectively, were examined by ...

Niobrara Formation in North Dakota is a gray to tan calcareous shale that was deposited in the shallow waters of the Cretaceous Interior Seaway around 80 million years ago. The Niobrara Formation can be found throughout the mid-continent of the U.S. and Canada and was named for exposures near the mouth of the Niobrara River in Knox County ...The Niobrara Formation in the southern PRB is an emerging continuous hydrocarbon play. The accumulation covers a large area and is a potential giant …The Niobrara Formation is an important source and reservoir for biogenic and thermogenic petroleum in eastern Colorado. The Niobrara and the underlying Codell Sandstone Member of the Carlile Shale contribute 67% of the total oil and 34% of the total gas production in the Wattenberg field in the west-central part of the Denver Basin ...The Niobrara Formation /ˌnaɪ.əˈbrærə/, also called the Niobrara Chalk, is a geologic formation in North America that was deposited between 87 and 82 million years ago during the Coniacian, Santonian, and Campanian stages of the Late Cretaceous. It is composed of two structural units, the Smoky … See moreThe Niobrara Formation is one of the most extensive rock units in the Great Plains, and was deposited between 87 and 82 million years ago during the Late Cretaceous Period. [57] Michael J. Everhart, “Revisions to the Biostratigraphy of the Mosasauridae (Squamata) in the Smoky Hill Chalk Member of the Niobrara Chalk (Late Cretaceous) of Kansas ...

NPS Photo Valentine Formation Beneath the Ash Hollow is the Valentine Formation. This loosely-consolidated sandstone crumbles easily, but holds the primary source of the Niobrara River in this area: the Ogallala, or High Plains, aquifer. About 70% of the water in the river comes directly from groundwater.A cervical vertebra of the large, pelagic pterodactyloid pterosaur Pteranodon sp. from the Late Cretaceous Niobrara Formation of Kansas, USA is significant for its association with a tooth from the large lamniform shark, Cretoxyrhina mantelli. Though the tooth does not pierce the vertebral periosteum, the intimate association of the fossils—in which the tooth is wedged below the left ...Adoptee identity formation is a complex process that shapes the adoption mind. The adoption experience can have a profound impact on an individual’s sense of self and how they view the world.The Niobrara Formation was deposited in a shallow marine environment along a sea that extended between the present day Arctic Ocean and Gulf of Mexico (Diffendal and Voorhies, 1994), and is ...

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South Dakota consists of deformation of the Dakota Formation, Graneros Shale, Greenhorn Limestone, Carlile Shale, and Niobrara Formation of Cretaceous age. The Greenhorn is warped upward about 400 feet on the Sioux Quartzite with a formation dip ranging from 30 to 50 feet per mile.The Niobrara River is known for its beauty, biological significance, and paleontological resources, and is enjoyed as a superb canoeing river of the northern Great Plains. ... Waterfalls occur where streams flowing into the Niobrara run over the erosion-resistant Rosebud formation. Over 230 waterfalls occur along the westernmost part of the ...When you write academically, you will research sources for facts and data, which you will likely include in your writing. Using this information will require that you cite your sources. Your instructor may require Harvard referencing format...17 mar. 2010 ... The view from this scenic overlook offers spectacular views of the Niobrara Chalk formations that line the southern border of the Lewis and ...JSON Shapefile White to dark-gray argillaceous chalk, marl, and shale. Weathers yellow to orange. Contains thin, laterally continuous bentonite beds, chalky carbonaceous shale, minor sand, and small concretions. Thickness up to 150 ft (46 m). Geologic unit mapped in South Dakota: White to dark-gray argillaceous chalk, marl, and shale.

535-41 for Section 6, Township 7 North, Range 60 West, 6th P.M., for production of oil, gas and associated hydrocarbons from the Niobrara Formation; and 2) ...Niobrara Shale Overview. The Niobrara shale formation is situated in northeastern Colorado and parts of adjacent Wyoming, Nebraska, and Kansas. Primarily an oil play, it is in the Denver-Julesburg Basin, which has long been a major oil and gas province. Technological advances in horizontal drilling and hydraulic fracturing in the last decade ...Niobrara First White Specks Medicine Hat Verger Carlile Second White Specks Pseudoclavulina sp. 1 y cles Niobrara Cycle Transgression Greenhorn Cycle Transgression Regression a) 87 89 tage Santonian Coniacian Turonian Late Cretaceous iod Modi˛ed from Nielsen et al., 2008 Carlile Formation - Anoxic bottom water conditions in early Carlile ...The Niobrara Formation / ˌnaɪ.əˈbrærə /, also called the Niobrara Chalk, is a geologic formation in North America that was deposited between 87 and 82 million years ago during the Coniacian, Santonian, and Campanian stages of the Late Cretaceous.Oil production in the DJ-Niobrara fell by almost 1/3rd from 579 thousand b/d to 390 thousand b/d in the 13 months from the peak in November 2019 through December last year. The wells in this area have high decline rates and in 2020 fewer than half the number of wells were completed (588) than in the years before. December production was the lowest level in over 3 years.Is the upper member of Niobrara Formation above Fort Hays Limestone Member of Niobrara and beneath Pierre Shale. Divided in the Pueblo area, Pueblo Co, CO in Denver basin, into 7 units described in ascending order: 1) shale and limestone unit is a 20 ft thick gray calcareous shale separated into 18 layers by gray shaly limestone, has INOCERAMUS DEFORMIS, is of early and middle Coniacian age; 2 ...A recent U.S. Geological Survey (USGS) oil and gas assessment of the Powder River Basin , Wyoming and Montana, identified the Upper Cretaceous Mowry Shale and Niobrara Formation as the primary hydrocarbon sources for Cretaceous conventional and unconventional reservoirs.Niobrara Formation; oil and gas fields; petroleum engineering; propagation; signals; strain; United States; Upper Cretaceous; Wattenberg Field; well stimulation; fiber optics; unconventional reservoirs; Latitude & Longitude N39°49'60" - N40°19'60", W105°00'00" - W104°30'00" View Full GeoRef Record.and underlying Niobrara Formation near the town of Presho, SD in 2014-15. This core provided samples within 35 miles (56 km) of the Rosebud Reservation. Analyses on all cores included rock eval pyrolysis, thin section analysis, and total organic carbon (TOC) determination, which was as high as 6%. The research concluded that the Niobrara under theThe Cretaceous rocks in southwestern Minnesota can be correlated with the better-known regional stratigraphy in South Dakota of the Dakota Formation, Graneros Shale, Greenhorn Limestone, Carlile Shale, Niobrara Formation and Pierre Shale (Fig. 3).

Niobrara formation Kcg: Carlile shale, greenhorn limestone, and graneros shale Kc: Colorado group Kpg: Pierre shale, Niobrara, and Carlile, Greenhorn, and Graneros formations, undivided Kdp: Dakota sandstone and Purgatoire formation Kd: Dakota sandstone or group Kl: Lance formation Kmv:

operation of the Niobrara Formation. B. Provide that the Commission’s pooling order is made effective as of the earlier of the date of this Application, or the date that any of the costs specified in § 34-60-116(7)(b), C.R.S. are first incurred for the drilling of the Wells in the Niobrara Formation on the Application Lands.The Niobrara Formation produces commercial quantities of oil from fractures in several places in the Denver basin. The Niobrara in this basin is an oil-prone, mature source rock having as much as 3.4% TOC, and has been in the generating window since early Eocene. This implies that hydrocarbon generation from the Niobrara is partly ...The Cretaceous Niobrara Formation is a prolific organic-rich hydrocarbon reservoir throughout the greater U.S. Rocky Mountain region. Resistivity mapping is a common tool used for maturity mapping ...The Niobrara Formation, also called the Niobrara Chalk is a geologic formation in North America that was laid down between 87 and 82 million years ago during the Coniacian, Santonian, and Campanian ages of the Late Cretaceous. It is composed of two structural units, the Smoky Hill Chalk Member overlying the Fort Hays Limestone Member. The chalk formed from the accumulation of coccoliths from ...The Niobrara Total Petroleum System (TPS) covers an extensive area across the Rocky Mountain Region, USA. In the Powder River Basin (PRB), the petroleum system consists of source beds in the Upper Cretaceous Niobrara Formation as well as reservoirs in the Upper Cretaceous Frontier, Turner, Niobrara, Sussex, Shannon, Parkman, Teapot, and Teckla, and Paleocene and Eocene Fort Union and Wasatch ...Explore this photo album by James St. John on Flickr! Pseudoperna congesta fossil osyters encrusting a Platyceramus platinus inoceramid bivalve shell (Smoky Hill Chalk Member, Niobrara Formation, Upper Cretaceous; Castle Rock chalk badlands, south of Quinter, Kansas, USA) 1 by James St. JohnWriting a letter is an important skill to have, whether it be for business or personal reasons. Knowing the basics of letter writing format can help you create a professional and effective letter.Abstract. Tylosaurus nepaeolicus (Cope 1874) is one of the least well known of the five species of mosasaurs that are recognized from the lower Smoky Hill Chalk Member (upper Coniacian) of the Niobrara Formation in western Kansas. In describing the type material, Cope stated that this species was one-third or less the size of T. proriger Cope 1869, a species that appeared during the Santonian ...

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Study with Quizlet and memorize flashcards containing terms like The Mesozoic (Middle Life) Era consists of three periods: a. Triassic, Jurassic and Cretaceous b. Triassic, Neogene and Paleogene c. Triassic, Eocene and Cretaceous, Which of the following is known as the Age of Mammals: a. Cenozoic. b. Mesozoic. c. Paleozoic., The crustal uplift in Scandinavia over the last 10,000 years is cause ...The Niobrara Formation in the Southern Powder River Basin, Wyoming: An Emerging Giant Continuous Petroleum Accumulation. Steve Sonnenberg Colorado School of Mines Halo Reservoir Tight Shale==Chalk Systems Very low matrix K Low matrix k Analogous to shale gas Thin bed, bioturbated Source = reservoir Source ≠ reservoir Migrated HC's Examples: Niobrara, Clastics or Carbonates Austin Chalk ...In northwestern Ellis County, Bass (1926) mapped a total of 76 small faults in the Niobrara Formation (Cretaceous), which were assumed to be the surface expression of subsurface solution and subsequent slumping of overlying beds (Pl. 27A). The faults, commonly marked by veins of slickensided calcite as much as 6 inches thick, may be traced for ...Year defined. 1896 [1] The Smoky Hill Chalk Member of the Niobrara Chalk formation is a Cretaceous conservation Lagerstätte, or fossil rich geological formation, known primarily for its exceptionally well-preserved marine reptiles. [2] Named for the Smoky Hill River, [1] the Smoky Hill Chalk Member is the uppermost of the two structural units ...This chapter discusses the chalk reservoirs. Chalk is a friable, fine-textured limestone composed dominantly of coccoliths, but in which pelagic foraminifera also occur. Coccoliths accumulate initially as oozes, and later become chalk when lithified. The Upper Cretaceous Chalk, for example, which is 200-400 m or more in thickness, is so ...The contact between the Carlile Shale and the overlying Niobrara Formation is marked by an unconformity in much of the outcrop area, but where an unconformity is not discernible, the boundary is typically placed at the first resistant, fine-grained limestone bed at the base of the Niobrara Formation. GallerySome of the most notable outcrops are the Monument Rocks of Western Kansas, that are comprised of the Smokey Hills Chalk of the larger Niobrara Formation. Monument Rocks, Kansas. Monument Rocks is a relatively …which was also recovered from the Niobrara Formation. The new species consists of an extended anterior spike-like rhachis and a greatly enlarged ventrally open posterior conus. Niobrarateuthis walkeri n. sp. inhabited the Niobrara Sea during late Coniacian to early Santonian time and was recovered from the basal Smoky Hill Chalk. INTRODUCTIONNiobrara Total Petroleum System in the Southwestern ... - USGS. EN. English Deutsch Français Español Português Italiano Român Nederlands Latina Dansk Svenska Norsk Magyar Bahasa Indonesia Türkçe Suomi Latvian Lithuanian česk ...Abstract The Late Cretaceous (89–82 Ma) Niobrara Formation is the primary target for unconventional horizontal well activity in the Denver Basin. With an abundance of …The Niobrara Formation over the Carlile Shale in bluffs along the valley, near St. Helena, Cedar County, Nebraska, p. 24 8c. An aerial photograph of the town of Fort Calhoun, Nebraska, and the terrace that was the site of Lewis 2. A roadcut in loess with vertical and Clark's Council Bluff, p. 13 fractures on the north side of U.S.The environments suggested by the rocks include the deep sea, sandy beaches, and coast swamps. Names applied to the various formations are (from oldest to youngest): the Benton Shale, Niobrara Limestone, Pierre Shale, Fox Hills Sandstone, and the Laramie Formation. Together these formations total over 10,000 feet of sediment. ….

During the time of the deposition of the Niobrara Chalk, much life inhabited the seas of the Western Interior Seaway. By this time in the Late Cretaceous many new lifeforms appeared such as mosasaurs, which were to be some of the last of the aquatic lifeforms to evolve before the end of the Mesozoic. Life of the Niobrara Chalk is comparable to that of the Dakota Formation, although the Dakota ...April 30, 2020 Sections of the Upper Cretaceous (Coniacian to Campanian) Niobrara Formation in two cores from Kansas and Colorado, the Amoco Rebecca Bounds and USGS Portland 1, respectively, were examined by hyperspectral core imaging and analysis.Niobrara Formation (Late Cretaceous) at surface, covers 2 % of this area. ... Cloverly Formation (Northeast Wyoming - Hartville Uplift) - Rusty to light-gray sandstone containing lenticular chert-pebble conglomerate interbedded with variegated bentonitic claystone. Morrison Formation (North and South Wyoming) - Dully variegated claystone ...The Smoky Hill Chalk Member of the Niobrara Chalk was deposited in the Western Interior Sea during a span of about five million years extending from the upper Coniacian through the lower Campanian. Coincidentally, this period also encompasses much of the early evolution and radiation of the family Mosasauridae. Thousands of mosasaur specimens …Abstract In the Wattenberg Field, the Reservoir Characterization Project at the Colorado School of Mines and Occidental Petroleum Corporation (Oxy) (formerly the Anadarko Petroleum Corporation) collected time-lapse seismic data for characterization of changes in the reservoir caused by hydraulic fracturing and production in the Niobrara Formation and Codell Sandstone member of the Carlile ...Writing a letter is an important skill to have, whether it be for business or personal reasons. Knowing the basics of letter writing format can help you create a professional and effective letter.Niobrara Formation symbiotic fish in inoceramid bivalves. p. 31-41 In S. Christopher Bennett (ed.), 1990 Society of Vertebrate Paleontology Niobrara Chalk excursion guidebook. Museum of Natural History and the Kansas Geological Survey, Lawrence, KS. Wiley, E.O. and Stewart, J.D. 1981.Niobrara State Park. Niobrara State Park is located in northern Nebraska along the border with South Dakota. At this park, excellent exposures of the Niobrara Formation can be observed on the trails along the river. Near the entrance of the park, thick exposures of dark gray/black Pierre Shale can be seen. There are several yellow/white ...The Niobrara Formation (latest Turonian-Campanian) is the bedrock under much of northern . Cedar County and it crops out in many places. It is an entirely marine deposit consisting of a lower . Niobrara formation, Normal fault in the Fort Hays member of the Cretaceous Niobrara Formation, south of Stockton, Kansas. These chalk beds were originally deposited in the shallow Western Interior Seaway about 80 million years ago. The thick beds of the Fort Hays member are extensively bioturbated. Faulting is post-Cretaceous and pre-Quaternary., Located in southeast Montana and northwest Wyoming, the Powder River Basin is a region known for its rich coalbed methane potential - which currently supplies approximately 40% of the United States' coal. While overall coal interest has been in decline, the Powder River Basin remains a relatively active target for certain operators., Cretaceous Niobrara Formation, Northern D-J Basin Defender US33 #2-29H Samson 37.5% Working Interest The first Niobrara appraisal well, the Defender US33 #2-29H, commenced drilling operations in mid August and reached a total depth of 11,089 feet in late September. This well was drilled and funded 100% by Halliburton under their farmin …, The entire formation could produce up to 1 million barrels a day. ... Niobrara boosts interest in local oil development. Oct 9, 2010 Oct 9, 2010; Comments; Facebook; Twitter;, The deepest faults are sparse, offset a seismic reflection identified from the Niobrara Formation Govenlock member, and have vertical offsets <2 m. The deformation increases in fault density and vertical offset at shallower depths, reaching 6 faults/km 2 with up to 30 m of vertical offset. Upper Cretaceous strata throughout the Great Plains ..., The wireline tool is used with a motor that features a bent sub to control the direction of the bit. A recent five-well drilling program in the Niobrara formation along the Colorado-Kansas border has demonstrated a new bottomhole assembly (BHA) for coiled-tubing drilling (CTD) that is suitable for drilling directional, S-curve and horizontal ..., The Niobrara Formation has been drilled in the liquids window along the western and northern margins of the Piceance Basin from 2014 to 2018, with longer lateral lengths and higher proppant ..., operation of the Niobrara Formation. B. Provide that the Commission's pooling order is made effective as of the earlier of the date of this Application, or the date that any of the costs specified in § 34-60-116(7)(b), C.R.S. are first incurred for the drilling of the Wells in the Niobrara Formation on the Application Lands., The majority of the preserve was acquired by The Nature Conservancy in 1980. First and foremost, the Conservancy's mission in establishing the Niobrara Valley Preserve was to ensure that its conservation value would be protected for the long term. Secondly, it is operated as a working ranch. We lease grasslands for cattle grazing, two bison ..., Abstract. The Mancos-Niobrara formation in western Colorado is estimated by the USGS to contain 66 trillion cubic feet of natural gas. Successfully developing this asset depends on understanding the geology, geomechanics, the impact of fracture length and height, conductivity, fracture spacing, and well spacing on estimated ultimate recovery. The Mancos-Niobrara has tremendous resource ..., source rocks of the Phosphoria Formation, which contain Type-IIS kerogen, occurred in the Late Cretaceous (80 to 73 Ma [million years]). Gas generation from the cracking of Phosphoria oil reached a peak in the late Paleocene (57 Ma) only in the deepest parts of the province. The Mowry Shale, Niobrara Formation, and Baxter Shale (and equivalents), Tetrapods of Niobrara Formation. Tetrapods (Sauropsids) of the Niobrara formation, a geologic formation in the United States of America deposited 87-82 ..., Niobrara Formation (Late Cretaceous) at surface, covers 1 % of this area. Argillaceous chalk, limestone and shale. Chalk is medium gray to white, interbedded with thin layers of chalky shale; contains many fossil clams, oysters, and formanifera. Limestone is light gray to medium gray and yellowish gray, interbedded with medium-gray chalky shale ..., 3 mar. 2022 ... By Benjamin C Burke, Transitional Energy, Aurora, Colorado, USA. Geologic Setting. The Cretaceous Niobrara Formation and Codell Member of ..., The Niobrara Total Petroleum System (TPS) covers an extensive area across the Rocky Mountain Region, USA. In the Powder River Basin (PRB), the petroleum system consists of source beds in the Upper Cretaceous Niobrara Formation as well as reservoirs in the Upper Cretaceous Frontier, Turner, Niobrara, Sussex, Shannon, Parkman, Teapot, and Teckla, and Paleocene and Eocene Fort Union and Wasatch ..., The Niobrara Formation (Upper Cretaceous) in the northern Great Plains is being studied by the U.S. Geological Survey because it includes potential low-permeability reservoirs for natural gas. Subsurface investi­ gations of the Niobrara indicate that three major chalk tongues are found within the unit. , Named as top formation of Lower Cretaceous series, top of Lower Cretaceous. Formerly called "formation No. 3" (Meek and Hayden, 1857). Type not designated. Named for Niobrara River, Knox Co, NE in Salina basin, where formation forms 90-100 ft cliffs near mouth along Missouri River., The Niobrara Formation in the southern PRB is an emerging continuous hydrocarbon play. The accumulation covers a large area and is a potential giant accumulation. Recent drilling success by several operators indicates that productive reservoir conditions exist in the southern PRB (Figure 1). In this area, the Niobrara Formation consists of ..., Here wide Q-range total neutron scattering was used to evaluate perdeuterated methane (CD 4) behavior at reservoir pressures (200-750 bar) and temperature (60 °C) in a sample at the late oil/wet gas thermal maturity stage from the Late Cretaceous Niobrara Formation, an active petroleum producing formation within the Denver-Julesburg Basin, U.S., Stage boundary ages are estimated via integration of new radioisotopic data with the floating astrochronology for the Niobrara Formation. The ages are determined by anchoring the long eccentricity bandpass from spectral analysis of the Nio brara Formation to radioisotopic ages with the lowest uncertainty proximal to the boundary, and adding or ..., The Niobrara Formation is a significant source of dissolved solids, Se and a moderate source of U along the studied reach of the Arkansas River. They revealed that during both the irrigation and non-irrigation seasons, concentrations of these constituents were substantially greater in Niobrara-influenced surface-water inflows., Niobrara Formation (Late Cretaceous) at surface, covers 1 % of this area. Argillaceous chalk, limestone and shale. Chalk is medium gray to white, interbedded with thin layers of chalky shale; contains many fossil clams, oysters, and formanifera. Limestone is light gray to medium gray and yellowish gray, interbedded with medium-gray chalky shale ..., The Niobrara Formation consists of up to 750 feet of chalk. The outcrop belt trends southwest from north-central Kansas. The Fort Hays Member is a light-gray to very light-yellow chalk; it is massively bedded and has thin, light to dark-gray, chalky-clay partings. The Fort Hays Member forms up to the basal 90 feet of the Niobrara Formation., This compilation presents total organic carbon and pyrolysis analysis data for the Pierre Shale, Niobrara Formation, and other Cretaceous marine shales in the Raton Basin-Sierra Grande Uplift Province. The data was used to characterize these potential source rock intervals in support of the oil and gas resource assessment in the province., Enchoteuthis (meaning "spear squid") is an extinct genus of large enchoteuthine cephalopod that lived during the Cretaceous.Although it and its relative Tusoteuthis are often compared to squid, both are now thought to be more closely related to modern octopuses.Examination of gladius remains initially yielded an estimated mantle length …, 17 mar. 2010 ... The view from this scenic overlook offers spectacular views of the Niobrara Chalk formations that line the southern border of the Lewis and ..., Jan 15, 2021 · Correlating the formation in the Raton Basin with the Niobara near Pueblo, Colorado, the authors found very similar faunal sequences but significant lithologic differences. Additionally, the authors collected and analyzed samples from eight localities as part of an evaluation on oil and gas resources in the Raton Basin. , The underlying organic-rich Graneros Shale provides further hydrocarbon charging (Higley et al., 1995). The Niobrara Formation in the DJ Basin consists of ..., The Niobrara Formation produces commercial quantities of oil from fractures in several places in the Denver basin. The Niobrara in this basin is an oil-prone, mature source rock having as much as 3.4% TOC, and has been in the generating window since early Eocene. This implies that hydrocarbon generation from the Niobrara is partly ..., The job search process can be daunting, but having the right resume format can make a huge difference. Having a well-formatted resume is essential for making a great first impression on potential employers., Pg. 2183-2187, 2197 (fig. 2). Greenhorn formation. Formations in Black Hills that are equivalent to Colorado shale of central and northwestern Montana are (ascending) Fall River sandstone, Skull Creek shale, Newcastle sandstone, Mowry shale, Belle Fourche shale, Greenhorn formation, Carlile shale, and Niobrara formation., The Cretaceous Niobrara Formation is one of the latest unconventional exploration targets in North America. In this paper, an overall Type-II marine organofacies with some variability is present within a core which consists of alternating marls and chalks, covering a maturity range of 0.8–1.0 %Rc (calculated vitrinite reflectance)., The Cretaceous Niobrara Formation is one of the latest unconventional exploration targets in North America. In this paper, an overall Type-II marine organofacies with some variability is present within a core which consists of alternating marls and chalks, covering a maturity range of 0.8-1.0 %Rc (calculated vitrinite reflectance).