| At the base of the erosional hollow, an inlier of Jurassic rocks crops out below the late Cimmerian unconformity. |
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| Sandstone-filled cracks exposed at the unconformity are viewed as periglacial frost fissures. |
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| The Base Balder Formation unconformity forms a highly undulating, structured seismic reflector. |
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| Data on a systemic boundary unconformity on the west Newfoundland shelf are more problematic. |
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| Extensional faults are planed by a regional unconformity that is overstepped by Permian to Cretaceous strata. |
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| The syn-rift succession overlies Eocene to Oligocene pre-rift strata with an angular unconformity. |
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| The unconformity surface is overlain by sandstone, reworked chalk or tuff, and represents submarine or subaerial erosion and missing section. |
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| Both overlie a pronounced angular unconformity and both are predominantly fluvial deposits. |
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| Van Dijk et al. emphasized the absence of deep erosional incision in the geometry of the unconformity. |
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| That unconformity is overlain by sandstones of the Puentelles Formation, dated as late Kasimovian based on its fossil flora. |
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| You still get men wearing hats now but it's almost a sign of unconformity for a young man to wear a hat apart from baseball hats. |
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| The stratal geometries that are characteristic of the unconformity depend strongly on structural and geographical position within the basin. |
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| He stated that a well-defined parting surface, such as a bedding plane or unconformity, is a prerequisite for the site of intrusion of a concordant sill. |
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| The recognition of an orogenic unconformity at the base of the Easdale Subgroup allows for a more realistic overall interpretation of Dalradian stratigraphy. |
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| Mapping at and near the contact revealed that it is an unconformity and not a fault as shown on existing maps. |
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| An unconformity is a lack of geological conformity that exists when there is a gap in the expected rock strata. |
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| Nobleton seismic reflectioin profile shows bedrock, and complex valley fill stratigraphy truncated by the Late Wisconsinan regional unconformity. |
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| The primary controlling factor for these reservoirs is the pre-Cretaceous unconformity surface. |
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| A full Jurassic succession is rarely preserved in the southern North Sea Basin because of erosion associated with the late Cimmerian unconformity. |
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| Another geochronologist on the team has dated two volcanic layers above the unconformity, and they consistently date to just over 2.8 billion years. |
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| If there is no major unconformity, the community receives a certificate and can pretend to use the label. |
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| Such places are valuable because in most parts of the world there is a gap, known as an unconformity, between the Ediacaran and the Cambrian. |
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| On Serpentine River, medium-bedded quartzites of the Chain of Rocks Formation are exposed below the unconformity. |
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| If every clastic deposit is represented by an unconformity somewhere else, then paleontology provides a reliable key to that somewhere else. |
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| Michel Cuney, Nancy, France: on the controls of high-grade unconformity U deposits. |
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| The trapping mechanism for these pools is a result of stratigraphic facies changes and unconformity traps. |
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| Thus, rock formations of considerably different ages are separated by only a thin distinct surface that reveals the vast unconformity in time. |
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| The topography of the unconformity includes a northward-draining valley network interpreted to represent incision into the underlying Palaeocene section. |
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| The middle Osagean age of the fauna indicates a previously unrecognized unconformity between the Nada and the overlying Meramecianage Renfro Member of the Slade Formation. |
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| Transgressive oolites onlapping a Silurian rocky shoreline unconformity, Gotland, Sweden. |
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| Unconformities are places where rocks have been eroded before new ones are deposited, and the widespread Ediacaran-Cambrian unconformity has been a big obstacle to understanding the Cambrian explosion. |
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| Rapid retreat ends each cycle, which is capped by an unconformity. |
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| The presented revisions include expanded ground freezing and new water management strategy, as well as moving the development away from the unconformity. |
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| The ore lies approximately 420 to 450 meters below surface, in a highly altered clay and sandstone host rock, positioned at the unconformity between the basement rock and overlying sandstone. |
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| As a secondary and shallower objective, an extensive Lower Cretaceous drainage system is incised into the top Paleozoic unconformity across this entire area. |
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| Above the unconformity, the terrestrial grey to red sequences of the Cumberland and Pictou groups are interpreted to be infill of a sag basin formed by thermal subsidence. |
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| The Wabamun Eroded Edge play is defined to include oil pools found in traps developed against the unconformity where Wabamun shelf carbonates subcrop beneath Cretaceous rocks. |
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| This poorly understood play consists of weathered products lying directly on the Paleozoic rocks and separated from the Mannville Group sediments by an unconformity. |
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| The Sannon-Seggau claims are considered to be highly prospective for unconformity-related uranium deposits and cover approximately 6.5 km strike length of favourable Sakami unconformity. |
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| The formation was subject to weathering and digenesis and erosion at the regional unconformity. |
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| A buttress unconformity occurs when younger bedding is deposited against older strata thus influencing its bedding structure. |
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| Angular unconformity of Shawangunk Formation overlying Martinsburg Formation at railroad cut near Otisville, New York. |
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| The top of the Coal Measures may be marked by an unconformity, the overlying rocks being Permian or later in age. |
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| The valley formation is dated to the Late Pliocene and early Pleistocene uplift unconformity. |
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| The upper boundary of the group is an unconformity with the overlying Windermere Supergroup. |
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| These Desmoinesian shales and limestones gene rally dip away from the valley center, creating a valley anticline beneath the unconformity. |
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| This sea level drop and the associated unconformity in North America separate the Mississippian subperiod from the Pennsylvanian subperiod. |
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| An unconformity represents time during which no sediments were preserved in a region. |
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| Seismic profiles clearly image these strata continuing beneath a basal Permian unconformity into at least the western part of the Caernarfon Bay Basin. |
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| It is also called nondepositional unconformity or pseudoconformity. |
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| Inshore, fluvio-tidal successions above the unconformity display upward increase in marine influence and are interpreted as transgressive incised valley fills. |
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| Alternatively a high influx of ions could have been provided by the widespread erosion that produced Powell's Great Unconformity. |
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