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- A break or discontinuity in a process. An [[unconformity]] is the physical representa217 bytes (28 words) - 20:48, 25 August 2014
- Fluid-composition traps are controlled by the physical or chemical properties of the trapped fluids themselves. The [[Wikipedia:Solub ...[[asphalt]], [[tar]]) or solid hydrocarbons ([[albertite]], [[gilsonite]], or [[grahamite]]). || ''Tar Seals'' || ''Bacterial degradation;'' Updip tar se3 KB (402 words) - 16:31, 13 April 2022
- ...ts such as tilting or faulting, among others, a fold should have its crown or crest as the [[anticline]] and the trough of its structures as the syncline ...olded. This is the best term used to describe it rather than “downward arc or trough of a fold” this is because due to events when strata has been over3 KB (505 words) - 15:58, 21 March 2019
- ...[[uplift]]. Folds are expressed in [[seismic reflection profile]]s as one or more regions of dipping reflections ([[dip]] domains) that correspond to in ...hether or not the thickness of stratigraphic layers changes in dip domains or across axial surfaces.3 KB (495 words) - 15:09, 18 January 2016
- ...leum system. An oil or gas seep, a show of oil or gas in a well, or an oil or gas [[accumulation]] demonstrates the presence of a petroleum system.2 KB (298 words) - 18:35, 25 January 2022
- ...al geology, and various university departments and E&P companies favor one or another in their courses and approaches to problem-solving. The major appro * Detailed geometric and/or kinematic studies3 KB (422 words) - 20:17, 3 February 2022
- ...l analysis of clastic depositional systems#Shoreline deposits|shorelines]] or [[reef]]s. Mapping thickness of reservoir-quality rocks is also useful for ...ial for containing reservoir rocks, i.e., [[Third-order sequences|lowstand or highstand]], using biostratigraphic markers and regional correlation surfac4 KB (491 words) - 14:27, 21 March 2022
- ...tratigraphic correlation and age determination|biostratigraphic analysis]] or in a geographic array for [[Paleoenvironmental analysis|evaluating paleoenv * Records of species present or absent2 KB (268 words) - 15:18, 31 January 2022
- [[file:1024px-WaveRipple.JPG|thumb|300px|Wave ripple or symmetric ripple, from Permian rocks in Nomgon, Mongolia. Photo by [https:/372 bytes (51 words) - 22:00, 17 March 2015
- Time interval (or isotime or isochron) maps are commonly used for interpreting changes in thickness betw1 KB (135 words) - 14:13, 24 November 2015
- ...]], in which the well path is designed to change orientation from vertical or high-angle to horizontal.1 KB (173 words) - 15:33, 16 March 2016
- ...ough the bend (curve) from vertical or high-angle to the desired low-angle or horizontal attitude.1 KB (174 words) - 19:33, 3 March 2016
- ...e or on the relative or absolute abundance of specific molecules in an oil or a [[source rock]] extract. ...can be obtained. In addition to correlating an oil directly to another oil or to a source rock extract, certain molecular parameters can be used to estim2 KB (294 words) - 21:02, 15 February 2022
- Basement is rock below a sedimentary cover, often [[igneous]] or metamorphic. It is generally not of interest in exploration for oil and ga264 bytes (40 words) - 15:52, 10 March 2016
- ...ale]] sequences. It is not applicable to massive [[carbonate]], [[chert]], or sandstone reservoirs. It has yet to be tested in interbedded shale–carbon ...th which a seal can be risked is thus much greater in a production setting or mature basin than it is in a frontier setting.3 KB (398 words) - 17:35, 29 March 2022
- ...refers to wells restricted to a platform or pad (because of environmental or economic contraints) that are attempting to access reserves at a significan1 KB (186 words) - 19:42, 3 March 2016
- ...eologic element || Dominant control of the trap—structural, stratigraphic, or fluidic. ...sses? If the trap is fluidic, was closure formed by pressure, temperature, or chemical processes?5 KB (665 words) - 18:47, 12 April 2022
- A unique designation or name is important to identify a person, place, item, or idea. As geologists, we name rock units, fossils, uplifts, and basins. The | A positive [[Oil-oil and oil-source rock correlation|oil-source rock]] or gas-source rock correlation3 KB (367 words) - 18:35, 25 January 2022
- ...he structural system because fractures are a result of [[deformation]] and/or displacement and therefore are structural in nature. ...ractured rock or by change from open, permeable fractures to cement-filled or narrow-aperture, low-permeability fractures.3 KB (461 words) - 16:04, 13 April 2022
- ...into clusters. The results of the cluster analysis show faunal groupings, or ''biofacies'', which are often characteristic of specific environments. [[: ...r geologic data to determine or evaluate specific paleoenvironmental zones or settings.4 KB (493 words) - 20:00, 31 January 2022