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Showing 1 to 20 of 23 for “"epeiric"”.
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Sm-Nd and C-isotope chemostratigraphy of Ordovician epeiric sea carbonates, midcontinent of North America
Interpreting and correlating epeiric sea sequences is key to understanding ancient marine environments. As a result, eNd, d13C and Sm/Nd profiles are developed as tools for interpreting epeiric sea carbonates. Previously, eNd and d13C profiles in epeiric sea carbonates have been used to study …
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Sequence Development on a Sediment-Starved, Low Accommodation Epeiric Carbonate Ramp: Silurian Wabash Platform, USA Mid-continent During Icehouse to Greenhouse Transition
… stratigraphy of a sediment-starved low-latitude epeiric sea platform during the transition from Ordovician icehouse to Devonian greenhouse. The Wabash Platform (approximately 200,000 square km area) is bounded to the north by the Michigan Basin, to the east by the Appalachian Basin, and passed to …
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The Cambrian: Sedimentary controls on marine ichnology and stratigraphic time at outcrop
… Earth’s history, marked by the expansion of vast epeiric seas and major evolutionary innovations associated with the Cambrian Explosion. Evolutionary reconstructions can be influenced by sedimentary processes, which were heterogeneous across Cambrian seas and variably altered the record that is …
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The geology and hydrocarbon potential of the Dawson Bay Formation carbonate unit (Middle Devonian), Williston Basin, North Dakota
… biostrome/bioherm (low energy), very shallow epeiric sea (very low energy), restricted shallow epeiric sea (extremely low energy), and shallow epeiric sea shoreline (variable energy).</p> <p>Eogenetic diagenesis includes: color-mottling, dolomitization of micrite to microcrystalline dolomite …
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Palynofacies and sedimentology of some Late Jurassic sediments from the British Isles and northern North Sea
… tool in the palaeoenvironmental modelling of epeiric sea facies. Particular emphasis is placed on the implications of oxygen deficiency in meromictic water bodies for the deposition of 'black shales'. In epeiric settings preservation is probably a more important determinant of black shale …
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Stratigraphy and depositional environments of the Three Forks Formation (Upper Devonian), Williston Basin, North Dakota
… of the Three Forks Formation occurred in an epeiric sea setting. The five lithofacies represent deposition in supralittoral, littoral, and low-energy sublittoral environmen~s. These environments were formed approximately parallel to the periphery of the basin. Of the three energy zones …
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The Aptian evolution of the Galve sub-basin (Maestrat Basin; E Iberia)
The epeiric mixed carbonate-siliciclastic sedimentary succession of Aptian stage (125-112 Ma) cropping out in the Galve sub-basin (western Maestrat Basin) in the eastern Iberian Chain (E Iberia) was analyzed by multiscale and multidisciplinary approaches. The integrated basin analysis presented in …
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Paleoenvironmental Analysis Of The Upper Silurian Callocystitidae (Cystoidea, Rhombifera) In The Central Appalachians
… stratigraphic interval, representing all major epeiric sea environments from supratidal through shallow shelf below wave base. Identification of cystoid genera and species by disarticulated part studies (comparison of isolated plates to the corresponding element on whole thecae of known taxa) …
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The Sequence Stratigraphic Context of Mixed Basin Margin Evaporites in the Harrisburg Member of the Permian Kaibab Formation, Northern Arizona and Southern Utah
… siliciclastics deposited on a westward dipping epeiric carbonate ramp during the middle Permian in northern Arizona, southern Utah, and eastern Nevada. It consists of the Fossil Mountain Member deposited in open-marine conditions and the overlying Harrisburg Member deposited in restricted …
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Storm-dominated shelf sedimentation marginal to a delta: an example from the Devonian of southwestern Virginia and eastern West Virginia
… accumulated in the proximal environments of an epeiric sea. Sandstones within the dominantly muddy formation are found in a variety of sequence types characterized by hummocky cross stratification. Individual beds usually have sharp erosive bases and gradational tops. A hydrodynamic …
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Paleoenvironmental Reconstruction of an Upper Ordovician Rocky Shoreline: The Lindsay Formation of Heywood and Partridge Islands, Ontario
… strata record two transgressive pulses of an epeiric sea that flooded the North American continent during the Late Ordovician. During this time, mountain building processes associated with the Taconic Orogeny were taking place to the present east, and the tectonic effects of this orogeny …
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Depositional history and diagenesis of the upper Mission Canyon and lower Charles Formations (Mississippian), Billings County, North Dakota
… environments in a shallow, low-energy, epeiric-sea setting. The depositional history is characterized by 4 successive stages: 1) sublittoral deposition under shallow normal marine conditions; 2) sublittoral deposition in slight topographic depressions under restricted marine conditions …
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Diagenesis and porosity development of the Mission Canyon and Charles Formations (Mississippian), Treetop and Whiskey Joe Fields, North Dakota
… and anhydrites which were deposited in a shallow epeiric sea. This study was limited to the upper Mission Canyon and lower Charles Formations of Treetop and Whiskey Joe fields, located along the Billings anticline in central Billings County, North Dakota. Close examination of ap~roximately 260 …
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Depositional environments and diagenesis, Interlake Formation (Silurian), Williston Basin, North Dakota
… sublittoral, littoral, and supralittoral epeiric sea environments. In addition, paleosols are present, </p><p> Rocks that represent low-energy sublittoral environments contain abundant skeletal allochems, some in growth position, High-energy sublittoral environments are represented by …
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Sedimentology, facies architecture, and diagenesis of the Middle Three Forks Formation - North Dakota, U.S.A.
… the mid- to inner-ramp portions of a low-angle epeiric ramp. Based on lithological and sedimentological characteristics, ten facies are recognized in the succession that are grouped into three facies associations (FAs). Laminated siliciclastic mudstones with silty dolostone intercalations (FA1) …
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Depositional environments and sandstone diagenesis in the Tyler Formation (Pennsylvanian), western North Dakota
… in this study, at the margin of a shallow epeiric sea.</p> <p>Initially, the presence of detrital clay and infiltration clay and early hematite and chlorite coatings on quartz grains was the most important factor influencing porosity reduction in Tyler sandstones. The first major diagenetic …
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Sequence Stratigraphy of Middle-Mississippian Carbonates of the Southern Appalachians: Tuscumbia Limestone, Tuscumbia, AL
… of biogenic silica from the deeper basins of the epeiric sea covering the North American continent during the Mississippian as a major source based on dissolved sponge spicules (3-30% in F3 and 2-28% in Fla).</p>
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Facies analysis of three members of the Scarborough Formation (Middle Jurassic : Lower Bajocian) in the Cleveland Basin, northeast England : Blea Wyke, Byland Limestone and Crinoid grit members
… Transgression generated an east-west orientated epeiric seaway connecting the Sole Pit Trough with an areally restricted Pennine Massif. Within this seaway, clastic sediment derived chiefly from the Mid North Sea High was deposited in the form of a progradational, regional-scale composite sheet …
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Sedimentological study of the western zone of the Lady Annie phosphate deposit, Queensland, Australia
… depression marginal to the Georgina Basin epeiric sea. The analysis of grain type, textural fabrics and sedimentary structures of the phosphorites indicates that reworking, transport and winnowing played a major role in the formation of the deposit and in determining phosphate grade. Facies …
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Sedimentological study of the western zone of the Lady Annie phosphate deposit, Queensland, Australia
… depression marginal to the Georgina Basin epeiric sea. The analysis of grain type, textural fabrics and sedimentary structures of the phosphorites indicates that reworking, transport and winnowing played a major role in the formation of the deposit and in determining phosphate grade. Facies …
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