Overlain formation. Medical search. Frequent questions

Sedimentary rocks such as sandstone and limestone are unconformably overlain by basalt which resulted from extensive lava flows . (wikipedia.org)
Unconformable with the underlying Vlieland Claystone or Sandstone formations. (dinoloket.nl)
Overlain by the sandy Helder Member of the Vlieland Sandstone Formation. (dinoloket.nl)
Fine-grained sandstone with skolithus linearis (vertical worm burrows), Antietam Formation (Ca), along the Shenandoah River, western Blue Ridge, Clarke Co., Va. (usgs.gov)
Fine-grained, thin-bedded sandstone with skolithus linearis (vertical worm burrows) of the Harpers Formation (Chs), is transitional into the overlying Antietam Formation, near Harpers Ferry, western Blue Ridge, Washington Co., Md. (usgs.gov)
As finding of this study, the late Cretaceous "Nara Sandstone Member" of the Kawagarh Formation in Hazara area of earlier workers could be revised as Paleocene Hangu Formation. (bioone.org)
The Middle Jurassic Plover Formation sandstone reservoir in the Sunset-Loxton field was a poor-to-very good quality and potential for gas beds, and it was a very poor-to-very good quality and potential for gas beds in the Chuditch field. (scirp.org)
The hydrocarbon migrated mainly from the Upper Jurassic Frigate Shale source rock in the Malita Graben depocentre (structurally lower) to the Plover Formation sandstone reservoir in the Sunset-Loxton Shoals field during the Late Cretaceous at 66 Ma. (scirp.org)
In the Chuditch field, the hydrocarbon migration to the Plover Formation sandstone reservoir was initiated during the Late Miocene at 7.5 Ma from the Middle Jurassic Plover Formation source rock in the well Chuditch 1. (scirp.org)
Overlies Yartleton Formation of May Hill Sandstone. (glosgeotrust.org.uk)
The oldest part of this sequence is the Umpqua formation of early Eocene age consisting of a lower member of vesicular and amygdaloidal olivine basalt flows, a middle member of water-laid vitric and lapilli crystal tuff, and an upper member of interbedded fissile siltstone and basaltic sandstone which contains a 300-foot tongue of massive to thick-bedded basaltic sandstone near its top. (usgs.gov)
The Tyee formation of middle Eocene age overlies the Umpqua formation and consists of more than 5,000 feet of rhythmically deposited sandstone and siltstone in beds 2 to 30 feet thick. (usgs.gov)
About 500 feet of sandstone and siltstone assigned to the Spencer formation of late Eocene age unconformably overlies the Tyee formation. (usgs.gov)
The sandstone in the Spencer formation is very similar to that in the Tyee formation, from which it was probably derived. (usgs.gov)
The formation is characterized by a wide variety of rock types, including conglomerate, tuffaceous sandstone and siltstone, vitric and crystal tuff, waterlaid and mudflow breccia, and andesitic lava flows. (usgs.gov)
The Unkar Group sedimentary sequence is comprised of four formations-in ascending order, the Bass Limestone, Hakatai Shale, Shinumo Quartzite, and the Dox Sandstone-which are overlain by the 300 meter plus thick flow sequence of lava flows of the Cardenas Basalt. (answersingenesis.org)
The Buffalo Hills diamond project is located approximately 400 kilometers northwest of Edmonton, the property is situated in the Early Proterozoic Buffalo Head Terrane which is overlain by three Cretaceous aged sedimentary formations of marine and non-marine sequences of sandstone, siltstone and shale. (stockhouse.com)
In the western and southern parts of the basin, the Cutler is recognized as a Group consisting of, in ascending order: the lower Cutler beds, Cedar Mesa Sandstone, Organ Rock Formation, White Rim Sandstone, and De Chelly Sandstone. (usu.edu)
Overlain by sandstone and underlain by limestone, it contains vast quantities of natural gas which can be produced through hydraulic fracturing and directional drilling. (graniteridge.com)

The principal formations which outcrop are extensive sheets of sands and clays of Cretaceous, Tertiary, and Pleistocene age, underlain by Carboniferous limestone, which outcrops in the southeastern counties. (nps.gov)
It is situated at the base of the dominantly limestone, Late Cenomanian Hummar Formation, separating it from the underlying marly Fuheis Formation. (researchgate.net)
The deposits are associated with an impure red limestone of marine origin, which is probably to be correlated with the Franciscan formation of California. (usgs.gov)
The limestone is overlain by a thick series of basaltic flows and tuff of Tertiary age that are partly altered to greenstone. (usgs.gov)
The planktic foraminiferal limestone of the late Cretaceous is overlain by lateritic sandstones and sandy foraminiferal limestones, the latter being of Paleocene age. (bioone.org)
These sediments in turn overlie sand, gravel and sandy limestone sediments of the Chatton Formation. (es.govt.nz)
The Chukar Footwall orebodies are hosted in the planar to wispy silty limestone and calc-silicates of the Silurian-Devonian Roberts Mountains Formation (SDrm). (gsnv.org)
The diabase sills are, in fact, confined to the lower part of the Unkar Group, particularly intruding near the boundary between the Bass Limestone and Hakatai Shale, while the related dikes are intruded into all the formations above the sills along faults that predate, or are contemporaneous with, the sills. (answersingenesis.org)
It is overlain unconformably by the Permian Kaibab Limestone in the western part of the Paradox Basin. (usu.edu)

Here the basal Cape Lamb Member is unconformably overlain by the Sandwich Bluff Member. (nerc.ac.uk)
They are unconformably overlain, to the SE, by subaerially erupted basic island arc-type volcanics (the Rhobell Volcanic Group) of lowermost Ordovician age. (geologywales.co.uk)

Normally conformably overlain by the Skylge Formation. (dinoloket.nl)
The Katori Formation is conformably overlain by the newly named Byobugaura clay. (go.jp)
The Ordovician sequence is conformably overlain by Silurian sedimentary rocks dominated by a thick succession of turbiditic mudstones. (forestresearch.gov.uk)

Though the deposition of cretaceous strata mainly occurred in transgressive and high stand system tracts, the top of cretaceous is marked by type-I sequence boundary and low stand system tract, corresponding to the Paleocene Hangu Formation. (bioone.org)

The recognition of glacial outwash sediments in the s bsurface provides new insight into the continuity and environments of deposition of the Qasim Formation members in northwest Saudi Arabia. (searchanddiscovery.com)
6 , 7 The younger Precambrian sediments of the Nankoweap Formation and the Chuar Group overlie this Unkar Group succession, which unconformably rests on the early Proterozoic metamorphic and igneous crystalline basement. (answersingenesis.org)
Quaternary sediments cover the two Jurassic Formations in the Unuk River and Sulphurets Creek Valleys. (wpri.com)
Further research is required to confirm whether cable bacteria activity in spring indeed promotes the formation of distinct layers enriched in Fe, Mn, and P minerals in Gulf of Finland sediments. (lu.se)

The major geologic sources for gravel in northeastern Kansas are local sedimentary rocks, the Ogallala formation of western Kansas and western Nebraska, and local glacial drift. (ku.edu)

Owing to the softness of the Cretaceous and Tertiary formations which constitute the surface of the greater part of Nebraska, the river valleys are wide, and they are floored to a greater or less depth with deposits of alluvial materials brought by the streams at various stages of their development. (nps.gov)
Cretaceous-Eocene extensional structures and sedimentary deposits, including the Sheep Pass Formation in the Egan Range, suggest this deformation occurred, but was restricted in extent. (searchanddiscovery.com)
The Early Cretaceous Yellow Cat Member of the terrestrial Cedar Mountain Formation in Utah, USA. (mdpi.com)
Campanian-Maastrichtian strata are contained within two component formations of the Upper Cretaceous-lower Tertiary Marambio Group. (nerc.ac.uk)

The ancient rock substratum is overlain by sedimentary and volcanic rock formations. (photius.com)
The Fisher formation contains about 5,500 feet of nonmarine pyroclastic and volcanic rocks that are related to the volcanic rock sequences of the western Cascade Range. (usgs.gov)

Table of geologic formations in Nebraska. (nps.gov)

Ffestiniog Flags Formation - 650-1020m thick: massive or poorly bedded pale to dark grey silty mudstone with thinly-bedded light grey coarse quartzose siltstones. (geologywales.co.uk)
The Upper Jurassic Bowser Lake Group of thinly bedded mudstones and siltstones overlies the Middle Jurassic pillow lavas and interbedded mudstones of the Lower Salmon River Formation. (wpri.com)
These formations consist of red to maroon-coloured shales and siltstones, grey sandstones and conglomerates . (depositsmag.com)

Water-bearing gravel usually overlies clay or indurated layers. (uky.edu)
These deposits consist of older alluvium and the Ocotillo Conglomerate Formation, a thick sequence of poorly bedded coarse sand and gravel. (edocr.com)

The Cutler Formation is composed of thick, arkosic, alluvial sandstones shed southwestward from the Uncompahgre highlands into the Paradox Basin. (usu.edu)

At road level, the younger shales of the Stanley Formation are gently dipping towards the west, while in the creek steeply dipping, thin, tightly folded turbidite beds are apparent. (confex.com)

These faults are overlain by Oligocene tuffs. (searchanddiscovery.com)
the upper part of the formation is of early, and possibly niiddle, Oligocene age. (usgs.gov)
The flows, more extensively exposed to the north, overlie the Fisher formation, and, therefore, are tentatively considered to be post-Oligocene in age. (usgs.gov)

The western margin in Deuel County is marked by high ridges of Tertiary formations, which constituted a shore against which the loess was deposited. (nps.gov)

Although there are some lithological and fauna1 discrepancies, which are attributed to marked lateral facies changes across the basin, it is believed that the Cape Lamb Member can be correlated with the lower to middle regions of the 1200 m thick sequence of undifferentiated López de Bertodano Formation lithologies exposed on Seymour Island. (nerc.ac.uk)
Integrated biostratigraphic, magnetostratigraphic and sequence stratigraphic analysis enables correlation with other areas in Belgium, with the London Clay Formation of southern England, and with the standard chronostratigraphic scale. (ac.be)

Conglomerate of carbonate clasts in a matrix of red siltstone, Leesburg Member of the Bull Run Formation (Trbl), Culpeper and Gettysburg basins, western Piedmont, Loudoun Co., Va., and Frederick Co., Md. (usgs.gov)

The Eagle Ford Shale is a hydrocarbon-producing geological formation named after the town of Eagle Ford, Texas - but the region extends much further. (graniteridge.com)
The Bakken Shale formation is a prolific oil source that has become even more important in recent years as a critical source of new U.S. oil production. (graniteridge.com)
The Haynesville Shale formation comprises about 9,000 square miles across southwestern Arkansas, northwest Louisiana, and east Texas, and averages about 200 to 300 feet thick. (graniteridge.com)

The hydrocarbon-prone Lower Silurian Qusaiba Member of the Qalibah Formation overlies the Zarqa/Sarah Formations. (searchanddiscovery.com)

The basal Tecovas formation is overlain by the Trujilla formation and, in some areas, the Cooper Canyon formation overlays the Trujilla formation. (depositsmag.com)

The Mount Hawk Formation was deposited in a marine basin surrounding the carbonate buildups (reefs) of the Southesk Formation. (wikipedia.org)
Etienne STEURBAUT & Chris KING , «The composite Kortrijk section (W Belgium): a key reference for mid-Ypresian (Early Eocene) stratigraphy in the southern North Sea Basin», Geologica Belgica [En ligne], Volume 20 (2017), number 3-4, 125-159 URL : https://popups.ulg.ac.be/1374-8505/index.php?id=5779. (ac.be)
Another gas sample was collected in Los Angeles at La Brea Tar Pits (Seep 61/67), which overlie Salt Lake Field in the northern Los Angeles Basin. (confex.com)

The oldest Ordovician rocks occur in the northern part of the area where the Aran Fawddwy Formation comprises 350-400 m of acid ash-flow tuffs. (forestresearch.gov.uk)

Several intervals of dark-grey to black silty, carbonaceous, fossiliferous claystone with intercalated calcareous beds can be encountered in the formation. (dinoloket.nl)
Finely laminated beds of metasiltstone perpendicular to cleavage in rocks of the Urbana Formation (Cu), east of New Market, central Piedmont, Frederick Co., Md. (usgs.gov)
The Spencer formation, better exposed in the east-central part of the Coast Ranges, contains marine fossils but also has thin impure coal beds, indicative of strand-line accumulation. (usgs.gov)
Above: Transition beds in the lower part of the Clogau Formation exposed on the wavecut platform at Friog, near Fairbourne. (geologywales.co.uk)
and the Pequop Formation and red beds in Lincoln County. (usgs.gov)

The sands were largely derived from the Arikaree formation, but it is also probable that they are in part the remains of formations of early Pleistocene age or an extension of the Equus deposits or the loess. (nps.gov)
These deposits range from northeast-trending outwash-filled channels deeply incised into the underlying Ordovician Qasim and the Cambrian-Ordovician Saq Formations in the northwest to thin sheets of sand capping the Qasim Formation in the east. (searchanddiscovery.com)
Hydrogeologic Information Water Bearing Formations Primary water-bearing materials in the subbasin are unconsolidated late Pleistocene and Holocene alluvial deposits. (edocr.com)

The aggregate thickness of these formations is less than 2,000 ft. (usu.edu)

Mollusca and Foraminifera indicate that the Umpqua formation is of early Eocene age and is a correlative of the Capay formation of California. (usgs.gov)

We found that valley formation involved all these processes, but that subglacial and fluvial erosion are the predominant mechanisms. (nature.com)

The Kanto Loam overlies the Byobugaura clay with unconformity, and is covered with sand hills (dunes) in some places (Fig. 1). (go.jp)
The upper part of the Kortrijk Clay Formation (the Roubaix Clay and Aalbeke Clay Members of mid-Ypresian age) has been exposed in road and canal cuttings and clay quarries in the Kortrijk area (western Belgium), and penetrated by several cored boreholes. (ac.be)

However, pronounced BBB permeation was noted, with frank albumin leakage around larger vessels (>10 microm), overlain by a dose-dependent astroglial scar-like formation and recruitment of phagocytic microglia. (cdc.gov)

The Rijnland Group or the Scruff Greensand Formation occasionally rest unconformably on this formation if a prominent Late Kimmerian II unconformity is developed. (dinoloket.nl)
The Inubo Group is overlain by the Katori Formation with slight unconformity. (go.jp)
The formations of the Cutler Group were deposited in a complex system of alluvial, eolian, and marine environments characterized by abrupt vertical and lateral lithologic changes. (usu.edu)
Texas Triassic rock belongs to a group of formations referred to as the "Dockum group" and is late Carnian to early Norian in age, being roughly 200 to 215 million years old. (depositsmag.com)
There are three formations in the Dockum group. (depositsmag.com)

The depositional environment of the Tyee formation is poorly known, although the rhythmic-graded bedding suggests turbidity currents. (usgs.gov)

The fluvio-deltaic to marine marginal Middle Jurassic Plover Formations are the primary reservoir targets within the Sahul Platform. (scirp.org)

Ogalalla formation (Pliocene). (nps.gov)
The field, discovered in 1902, produces oil from folds and fault blocks in the late Miocene and Pliocene Repetto and Puente Formations. (confex.com)

The upper and lower boundaries of the Mount Hawk Formation were redefined several times after the formation was first described in 1950. (wikipedia.org)
Molluscan data indicate a late Campanian-Palaeocene age range for this upper formation. (nerc.ac.uk)
It is overlain disconformably by the Mont-Panisel Sand Member of the Hyon Sand Formation (upper middle Ypresian). (ac.be)
Personally, I have more experience of the upper Tecovas and the Trujilla formations. (depositsmag.com)

Post-Kansan gravels are dominated by arkosic material from the Ogallala formation. (ku.edu)

Cross-bedded quartzite of the Sams Creek Formation (CZscq) south of Monrovia, central Piedmont, Frederick Co., Md. (usgs.gov)
Quartzite containing clasts of hematite phyllite of the Sams Creek Formation (CZscq) near Lake Linganore, central Piedmont, Frederick Co., Md. (usgs.gov)
Clean quartzite of the Buzzard Knob Member of the Weverton Formation (Cwb), Rt. (usgs.gov)
Conglomeratic quartzite of the Owens Creek Member of the Weverton Formation (Cwo), Blue Ridge, Short Hill Mountain, Loudoun Co., Va. (usgs.gov)

Accessed on [DATE] from https://www.dinoloket.nl/en/stratigraphic-nomenclature/helm-member. (dinoloket.nl)

The microphysical content of satellite observations will be revealed and the ability to probe into the rain formation processes will be highlighted. (confex.com)

These formations create uplands and a high-level erosional surface over most of the area. (uky.edu)
The Colorado River Aqueduct and the Coachella Branch of the All-American Canal convey imported surface water into the Coachella Valley which overlies the subbasin. (edocr.com)
The Fe enriched layer was directly overlain by a Mn oxide-rich surface layer (~ 2 mm). (lu.se)
Traumatic injuries involving the oral cavity may typically lead to the formation of surface ulcerations. (medscape.com)

In the north, it rises into a series of rock formations known as the Witwatersrand (literally, "Ridge of White Waters" in Afrikaans, commonly shortened to Rand--see Glossary). (photius.com)
Because the map units are classified by rock type, age, and formation, the resulting map (above) is very complex. (usgs.gov)
The Plover Formation source rock was a poor-to-good hydrocarbon generative potential and reached the middle to late mature oil window in the Sunset-Loxton Shoals field whereas in the Chuditch field, it was an overall fair-to-good hydrocarbon generative potential, and attained the Late mature oil window. (scirp.org)
The Plover, Petrel (Frigate) and Echuca Shoals formations source rocks in the wells Chuditch 1 and Heron 1, except for the Flamingo Formation in the well Chuditch 1, had higher gas and oil expelling efficiencies than the Plover Formation source rock of the wells in the Sunset-Loxton Shoals field. (scirp.org)
West Texas has a treasure trove of fossil-producing Triassic rock formations. (depositsmag.com)
Beyond its potential as source rock, the formation also contains significant producible oil reserves that have been made more accessible through hydraulic fracturing and directional drilling technology. (graniteridge.com)

Global map of Mars showing a blended MOLA/HRSC DEM overlain with valley network streamlines (purple). (nature.com)

The Mount Hawk Formation is fossiliferous and preserves remains of marine animals such as Syringopora and other corals, and brachiopods. (wikipedia.org)

The Mount Hawk Formation is a stratigraphic unit of Late Devonian (late Frasnian) age. (wikipedia.org)

Large discrepancies are evident when such short-term rates are compared to long-term rates of formation-level accumulation. (ku.edu)

Highly cleaved metasiltstone of the Harpers Formation (Ch) is folded with inclined spaced cleavage, western Blue Ridge near Harpers Ferry, Jefferson Co., W.Va. (usgs.gov)

The Mount Hawk Formation is recognized in the Rocky Mountains and foothills of Alberta from the Canada-United States border northward to at least the Smoky River area of west-central Alberta, a distance of more than 650 km (400 mi). (wikipedia.org)
The formation conformably overlies the Perdrix Formation or, in the Crows Nest Pass area, the Borsato Formation. (wikipedia.org)

The majority of Bakken drilling and production takes place in North Dakota, but the formation also includes reservoirs in Montana and the Canadian provinces of Saskatchewan and Manitoba. (graniteridge.com)

Alberta Table of Formations, May 2019" (PDF). (wikipedia.org)

These data were overlain on a digital elevation model utilizing GIS, producing 2D and 3D surfaces. (confex.com)

The formation is about 50 miles wide, and an average of 250 feet thick. (graniteridge.com)

Sandstone19

Limestone9

Unconformably overlain2

Conformably overlain3

Boundary1

Sediments4

Sedimentary Rocks1

Cretaceous4

Volcanic rock2

Geologic1

Siltstones3

Gravel2

Sandstones1

Shales1

Oligocene3

Tertiary1

Sequence2

Siltstone1

Shale3

Silurian1

Basal1

Basin3

Tuffs1

Beds5

Deposits3

Thickness1

California1

Predominant1

Clay2

Vessels1

Group5

Depositional1

Primary1

Pliocene2

Upper4

Arkosic1

Quartzite4

Member1

Processes1

Surface4

Rock6

Mars1

Marine1

Late1

Accumulation1

Western1

Area2

North1

Table1

Data1

Wide1