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Showing 1 to 11 of 11 for “"parasequence"”.
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Thin-bedded Facies Analysis of a Ferron Storm-dominated Delta Front and Prodelta: Cretaceous Ferron Sandstone, Utah
… data were derived from well-exposed outcrops of parasequences 5a, 5b, 6, 11, and 16b, within the Notom deltaic wedge, which represent a spectrum of wave-dominated shorefaces to river-dominated deltas. Parasequences 5a and 5b are comprised of over 60% HCS beds with subordinate amounts of …
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Sequence Stratigraphy and Paleoecology of the Late Mississippian Little Stone Gap Member in the Appalachians of West Virginia
… and these facies stack into two distinct parasequence types. Siliciclastic facies were deposited in continental, low-energy lagoonal and marginal marine environments. Carbonate facies record variable energy conditions in lagoonal, shoal, shoal flank and open marine settings. Parasequence …
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High-resolution sequence stratigraphy and diagenesis of mixed carbonate/siliciclastic successions.
… sequence stratigraphic interpretation of parasequences, systems tracts and sequences. At a parasequence scale, early diagenetic analyses indicate that concretionary growth is controlled by an initial phase of rapid burial, equating to the period of parasequence progradation, followed by a …
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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
… Harrisburg Member. This study interprets four parasequences making up systems tracts of two depositional sequences. The lower two parasequences are indicative of the highstand systems tract of depositional sequence H1. Facies of the lower parasequences consist of the open-marine wackestone - …
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High Resolution Stratigraphy of Ordovician Carbonates, Kentucky: Evidence for a Greenhouse to Glacial Transition
… (each 40 to 80 m thick), which contain 11 parasequence sets (2 to 20 m thick). The small sequences are composed of stacked, predominantly subtidal meter-scale cycles (parasequences). Meter-scale subtidal cycles contain facies that suggest they formed under moderate amplitude (20 to 40 m) …
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The Aptian-Albian ironstone of the Rapid Creek formation, Little Fish Creek, NWT: implications for Cretaceous Ocean Anoxic Events and critical mineral deposits
… coarsening-upward cycles are interpreted as parasequences, each recording shallowing through storm wave base. Parasequences are defined by flooding surfaces overlain by laminated, organic-rich mudstone that grades upwards into concretionary, microbial, and hummocky cross-stratified ironstone …
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Multi-Scale Mapping of Diagenetic Processes in Sandstones Using Imaging Spectroscopy: A Case Study of the Frontier Formation (Wyoming, U.S.A.) and the Utrillas Formation (Burgos, Spain)
… materials. Classification results show that Parasequence #6 of the Wall Creek Member in the Frontier Formation is composed of 87 m2 of bar facies, 150 m2 of channel facies, 11 m2 of distal facies, and 27 m2 of carbonate concretions. Calcite cement in channel facies concretions is …
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Mixed Carbonate-Siliciclastic Sequence Development and Chemostratigraphy On a Distal Foreland During Miocene Glaciation, Eastern Saudi Arabia
… palustrine carbonates. Within Dam carbonates, parasequence boundaries commonly are capped by tidal flat laminites (some of which are incipiently brecciated). High frequency negative excursions of ∂¹³C within the succession appear to relate to near-surface diagenesis by soil gas depleted in ∂¹³C …
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Microfacies Analysis, Sedimentary Petrology, and Reservoir Characterization of the Sinbad Limestone Based Upon Surface Exposures in the San Rafael Swell, Utah
… exploration, but will serve as a model for parasequence-scale intervals in thicker mixed carbonate-siliciclastic successions.
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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
… buildups which locally shallowed to sea level. Parasequence development in high accommodation settings elsewhere in North America are compatible with the transition from moderate ice-sheets to an ice free world. However, this is poorly expressed on the Wabash Platform due to the dominantly …
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Sequence Stratigraphy of the Bridal Veil Falls Limestone, Carboniferous, Lower Oquirrh Group, on Cascade Mountain, Utah: A standard Morrowan Cyclostratigraphy for the Oquirrh Basin
… ranging in thickness from 3 to 60 meters, and 62 parasequences. Parasequences are commonly asymmetrical, reflecting rapid flooding followed by protracted shoaling and/or sea level drop. Selected cycles are recognized in the Lake Mountains, Thorpe Hills, and the southern Oquirrh Mountains to the …