Alluvial fans and related phenomena are depositional landforms which form a continuum. |
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Find animations and images showing a variety of depositional landforms resulting from longshore drift. |
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A primary depositional feature of many layered rocks is stratification, or bedding. |
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These bones may have been reworked from previous depositional settings in contact with meteoric ground waters. |
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In many depositional basins, biostratigraphy is a key element in developing play concepts and planning for production wells. |
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Previous studies of coal sequence stratigraphy have concentrated on coals associated with siliciclastic depositional systems. |
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The observed carbon isotope excursions can be traced throughout different localities with different depositional environments and histories. |
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The depositional environment that preserved this fauna has been subject to widely different interpretations. |
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Their depositional environment varies from outer neritic to upper or middle bathyal. |
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The well data were used for stratigraphic and lithological analysis, for correlation of the depositional units and time to depth conversion. |
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We estimate the magma production, erosion and marine depositional rates of volcanic products. |
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The actual midden matrix itself was a stratigraphical disappointment with its depositional history blurred beyond recovery. |
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Although it is currently interpreted as an accretionary prism complex, the exact depositional setting remains unclear. |
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Because of their non-marine depositional setting, the Wealden sediments are not biostratigraphically constrained with a high degree of certainty. |
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The lowermost deposit in an accumulation is the indicator of the oldest event, or period, in the depositional record. |
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Greensand, coal, rock salt, coral limestone, oolites, and boulder clays are examples of indicators of depositional environments. |
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Fifth, much emphasis has been placed on paleomagnetic data indicating low depositional paleolatitudes. |
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A comparison between all the techniques used to analyse calcite cements reveals subtle differences between injected and depositional sandstones. |
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This regional work allows the Mesozoic depositional and tectonic history of the Sverdrup Basin to be better understood. |
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In contrast, depositional landscapes predominate in southern Alberta and Saskatchewan, where soft sedimentary rocks crop out near the southern limit of the ice sheet. |
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Tidal velocities are too high to permit a depositional environment to exist at that site. |
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A geological model was used to estimate the depositional trend of the reservoir sands, depending on the nature of the individual play. |
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We conduct studies designed to describe and explain the depositional and deformational histories of sedimentary basins. |
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Sedimentological investigations indicate a lacustrine depositional setting proximal to the coast, an interpretation also supported by the pulmonate molluscs and ostracods. |
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Major linear depositional troughs developed around Panthalassa, the ancestor of the Pacific Ocean, during the Early and Middle Triassic. |
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The depositional pattern is indicative of a synsedimentary extensional regime involving low angle normal faulting. |
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Three depositional environments are identified: glaciolacustrine fan, pillow lava dome, and hyaloclastite fan. |
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A number of ways of classifying depositional environments exist, but most modern schemes employ a geomorphologic approach. |
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Between the multistorey channel sandbodies, clear changes in depositional style occur with rapid upwards coarsening in grain size and sedimentary structures. |
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Runoff upslope from the depositional base level established by the long-term locus of deposition cannot erode below the resulting deposit. |
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The Dolomite depositional system is composed of a superficial plateau with shoals and ponds, limiting a submerged and protected inner shelf environment in the western area. |
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Six major types of erosional and depositional features are paired in the above chart. |
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Reservoir development in the larger reef complexes is aided by depositional variability and erosional irregularities. |
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They also use fossils to understand ancient depositional environments and the ecology of fossil organisms. |
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In sequence stratigraphy, unconformities define the ends of depositional sequences and the beginnings of new sequences. |
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New cores are being logged in bed-by-bed detail for lithofacies analysis and development of depositional models. |
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They consist of undecayed organic matter that either accumulated in place or was transported from elsewhere to the depositional site. |
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Three major depositional cycles occurred with each cycle characterized by coarsening-upwards or shallowing-upwards conditions. |
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Differing types of sediment, depositional processes and physical and chemical environments are responsible for the types of rocks, fluids and gases that subsequently form. |
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Knowledge has been gained on the depositional settings in which the kimberlites were emplaced and on the role these sedimentary processes played in reworking the eruptive kimberlite facies and influencing diamond grade. |
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Effects of pesticide exposure, nutrient enrichment, and depositional sediment accumulation can be estimated using an integrated differential triad response method. |
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Depending on sedimentological, compositional and structural characteristics of the new depositional environment, secondary manganese deposits may be concentrated in fractures, vugs and cavities, or pores spaces. |
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Sequence stratigraphy is the study of rock relationships within time-equivalent depositional successions bounded by surfaces of erosion or nondeposition. |
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Here we investigated the depositional setting of the stromatolitic carbonates for the better understand of the environments, which may have controlled the massive development of oxygenic photosynthesis. |
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However, to date there is no agreed depositional model for cap carbonates, and there remains minimal detailed paragenetic data for developing process based depositional models. |
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We compared results across subregions in evolving fluviolacustrine depositional environments in the Koobi Fora Formation from 2.0 1.5 Ma, a stratigraphic interval that temporally brackets grassland ascendancy in East Africa. |
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Microfossils, which are flushed up boreholes in the drilling mud, can be analyzed to determine the depositional environment of the underlying sedimentary rocks and their age. |
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Structurally, the depression that it occupies is continuous with that of the North China Plain to the southwest, but, topographically, the Liaoning plains are erosional rather than depositional in character. |
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We measure both erosional and depositional habitat. |
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As was done with the depositional and erosional edges, the project team used GIS software to assess the information and ensure the accuracy of the well data and play area boundaries. |
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For example, efforts were made to identify representative depositional and erosional settings and to sample multiple locations of similar depth and ecological setting in each water body. |
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By understanding sediment physical properties and depositional history, we can know if deposits are likely to fail in a submarine landslide, and what impact such failures may have on coastal communities. |
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Add the three-dimensional component and we've not only mapped the depositional units and facies, but we've also revealed the accretionary processes in time and space! |
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Determine the development and distribution of salt structures along the continental margin and study the interactions between salt and overlying sediments during the depositional life-cycle of the basins. |
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His research interests include paleogeographic evolution of the ancient continental margin of Laurentia and the understanding of evolving hydrocarbon systems in these depositional basins. |
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In sedimentary rocks, the magnetic foliation results from a combination of depositional processes and diagenetic compaction. |
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In general, the depositional history of the Gulf Coast has been one of overall gulfward migration of the shoreline and Continental Shelf edge. |
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Limestones may also form in lacustrine and evaporite depositional environments. |
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These fossils help scientists to date the core and to understand the depositional environment in which the rock units formed. |
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The sediments also acquire depositional remanent magnetization which allows them to be correlated with earth's geomagnetic reversals. |
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Clay deposits are typically associated with very low energy depositional environments such as large lakes and marine basins. |
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The high concentration of this mineral is related to a depositional environment with a low sedimentation rate. |
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Main Zagros Reverse Fault is a structural boundary changes in depositional history, geography and seismicity has been proposed in the past. |
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Fossil ripple marks are important features indicative of a specific depositional environment of an ancient basin. |
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Low turbidity is a result of mineralogical maturity and grain-size sorting in the natural depositional environment. |
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This lies in the same basin as Ngamia and Twiga South, but its depositional setting is different. |
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Ingles M, Anadon P Relationship of clay minerals to depositional environment in the non-marine Eocene Pontils Group, SE Ebro Basin. |
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The depositional setting was a prograding deltaic plain, which advanced across a shallow marine shelf during Late Oligocene-Early Miocene time. |
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Therefore, the interpreted depositional setting is that of a mostly waterlogged interfluve adjacent to low-sinuosity fluvial channels. |
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The skull and mandible of proboscideans often lag behind other skeletal elements in a depositional environment, mainly because of flotation of the skull due to diploe. |
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In geology, redox is important to both the formation of minerals and the mobilization of minerals, and is also important in some depositional environments. |
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It occurs as an aberration to prevailing environmental conditions, in this case, of general nondeposition normally characteristic of floodplain depositional settings. |
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The study of the palynofacies of a depositional environment of sediments can be used to learn about the depositional palaeoenvironments of sedimentary rocks. |
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The project will extend the interpretation to include gross depositional environment mapping, seismic facies analysis and play fairway analysis over time. |
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The nature of a sedimentary rock, therefore, not only depends on the sediment supply, but also on the sedimentary depositional environment in which it formed. |
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The generated data is a valuable asset to calibrate wireline logs and to understand the depositional environment, reservoir geometry and reservoir quality. |
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This also concerned the neglection of culturally-regionally different depositional customs possibly distorting our image of past realities and bronze circulation. |
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