• Interpretation of the geologic framework and seismic stratigraphy of Buzzards Bay was fundamental in developing a foundation for the surficial mapping. (usgs.gov)
  • The stratigraphy of the eastern USA's Newark Basin allowed scientists to construct one important early example. (wattsupwiththat.com)
  • Elsewhere in the basin, bedrock is buried by Quaternary sediment. (usgs.gov)
  • It crosses the Maddalena ridge, linking separate Quaternary basins. (nature.com)
  • This includes a series of half-graben basins, with centrally located Quaternary volcanic centers, which are linked end-to-end by structural accommodation zones. (syr.edu)
  • In the Geologic Map of Wyoming, this band is identified as dune sand and loess deposited during the Quaternary Period -the most recent 2.6 million years of Earth's history. (nasa.gov)
  • I am still very active within two of our research groups within Quaternary Sciences at the Department of Geology:(1) Glacial Processes, Sediments and Landforms and, (2) Reconstruction of Quaternary environments in Polar and mid-latitude regions - palaeoglaciology and climate history. (lu.se)
  • December 2021: Submitting first paper from the project 'The Siljan Lake District - Quaternary geology from deglaciation and into present time' to Earth Surface Processes and Landforms: "Deglaciation history and subsequent lake dynamics in the Siljan region, south-central Sweden, based on new LiDAR evidence and sediment records. (lu.se)
  • The geologic history of the Red River watershed spans over 400 million years, and starts with the deposition of sediments in marine and then river delta environments. (redrivergorge.com)
  • Either the highway engineers choose to cut a debris trapping ledge at the level of the top of the Pilar bed - not an unreasonable possibility - or the ledge was naturally eroded because the layer here was unusually resistant, marking a pause in deposition of sediments (a hiatus) that promoted calicification , the deposition of calcite just under the ground surface that cements the sediments. (kgbudge.com)
  • This research focuses on quartz optically stimulated luminescence (OSL) dating of the upper siliciclastic sediments to help bridge the lacuna that arose from previous relative geologic dating. (lu.se)
  • Because sedimentary rocks are stratified in age sequence, as summarized in the principles of relative geologic age , layers of sedimentary rock act as a record of how that area was changing, physically and biologically, over the extent of geologic time spanned by the sedimentary rock layers. (wvc.edu)
  • In addition, regional geologic structures (∼2.8 to ∼24.5 km) occur at the western flank of the study area. (degruyter.com)
  • Ultimately, regional geologic histories are compiled into a history of the earth over the whole course of its existence, including the formation, growth, and movements of continents and ocean basins, the growth and erosion of major mountain ranges, and the history of life on earth. (wvc.edu)
  • This leads to increased stress and loss of the plant communities, and eventually erosion and sediment transport out of the inner marsh areas. (lacoast.gov)
  • There is very little sediment on the shelf offshore of southern Ocean Beach (a pattern that extends south to Pescadero), a factor important for understanding and forecasting coastal erosion in this area. (gpsworld.com)
  • Sediment distribution maps reveal only a thin sediment cover offshore of the Ocean Beach (San Francisco) erosional hotspot (a pattern extending south to San Gregorio), indicating that today's present coastal erosion will be a continuing problem, likely to be exacerbated by continuing sea-level rise. (gpsworld.com)
  • Robust erosion and high stream flow emanating from high ridges in the east probably contributed significantly to increased metal concentrations in background levels of stream sediments due to an enhanced presence of minerals with high specific gravities and a correspondingly diminished presence of those with low specific gravities. (gsnv.org)
  • Surface processes (e.g., soil formation, runoff, sediment transport, river incision and deposition, glacial erosion and deposition) not only govern the evolution of the landscapes around us, but also constitute the dynamic link between the geologic record and environmental conditions (climate, lithology, vegetative cover, tectonics). (asu.edu)
  • Geologic maps incorporating subsurface data document the location and geometry of the San Andreas, San Gregorio and Point Reyes fault systems, and show how their interactions led to uplift of Point Reyes and development of a deep sediment-filled basin. (gpsworld.com)
  • Martian geomorphology and surface features provide links to understanding past geologic processes such as fluid movement, local and regional tectonics, and feature formation mechanisms. (usgs.gov)
  • In summary, wetland loss within the basin is largely the result of extensive hydrologic alterations to wetland building and maintenance processes. (lacoast.gov)
  • The Geologic processes are examined in three phases. (redrivergorge.com)
  • These sediments were compacted into rocks and economically important oil and iron deposits result from diagenetic processes. (redrivergorge.com)
  • Understanding earth processes -- Sediments are deposited in many environments on the earth's surface, some of which humans have little familiarity with, such as deep ocean environments. (wvc.edu)
  • Therefore, by examining sedimentary rocks as windows into these environments, we can learn about earth processes that we would otherwise know little about, and deduce details about them such as the chemistry of the air or water with which the sediments were in contact and the physical processes that were occurring in that environment. (wvc.edu)
  • The results are a sort of bird's eye view of these different geologic processes, what Kim refers to as the "evolutionary architecture of sedimentary basins. (utexas.edu)
  • One of the very difficult problems we have in traditional basin interpretation using outcrop studies or seismic lines is it's very hard to distinguish the signature of external forces from internal processes," Kim says. (utexas.edu)
  • This time coring lake sediment successions in Lake Siljan with aim to constrict processes and timing of lage subaqueous slumps detected from previous multi beam scanning of the lake floor. (lu.se)
  • Ten sub-surface sediment samples were collected from the eastern part of the basin, and quartz OSL dating using single-aliquot regenerative-dose protocol was conducted for. (lu.se)
  • Sediment samples were collected from sites in a sampling grid based on depth contours and were analyzed through high-resolution gamma spectrometry. (usp.br)
  • Fault structures and basement conductors are key elements associated with world-class, high-grade, unconformity related uranium deposits such as Cameco Corporation's (TSX: CCO) McArthur River and Cigar Lake mines in the Athabasca Basin. (diamondsnorthresources.com)
  • Several attempts at reconstructing geological settings and palaeoclimatic changes of the siliciclastic deposits of the Dahomey Basin, SW Nigeria, using relative age dating and correlation methods, have resulted in serious discrepancies on the ages. (lu.se)
  • article{9b0d45eb-8060-4c77-b5da-830d2e11e138, abstract = {{Several attempts at reconstructing geological settings and palaeoclimatic changes of the siliciclastic deposits of the Dahomey Basin, SW Nigeria, using relative age dating and correlation methods, have resulted in serious discrepancies on the ages. (lu.se)
  • These deposits are generally associated with Sm sediment type, although Sg, sand with a gravel lag can be present where Qdl has been eroded, which is confirmed from sediment samples and bottom photographs in the depression near Quicks Hole. (usgs.gov)
  • Given Pathfinder is exploring the largest property in the Thelon Basin, recognized as a highly prospective region for hosting high-grade, unconformity related uranium deposits, identification of conductors from the upcoming survey would add considerable value to the project and significantly enhance the Company's strategic position in the region. (diamondsnorthresources.com)
  • Pathfinder is exploring the largest property in the Thelon Basin, recognized as one of the most prospective regions for discovery of high-grade uranium deposits. (diamondsnorthresources.com)
  • The sedimentary rocks deposited in that widespread, long-enduring basin contain considerable mineral deposits and fossil fuel deposits. (wvencyclopedia.org)
  • The Appalachian Basin resources began to be developed in earnest in the mid- and late-1800s and fueled the Industrial Revolution in the United States with oil, gas, and coal deposits, including the high-quality coals needed for production of steel . (wvencyclopedia.org)
  • The commercial coal beds occur only in strata deposited during the Pennsylvanian Period of geologic time, while oil and gas deposits are found in strata from throughout the Paleozoic Era. (wvencyclopedia.org)
  • Quartz-pebble-conglomerate gold deposits represent the largest repository of gold on Earth, largely due to the deposits of the Witwatersrand Basin, which account for nearly 40 percent of the total gold produced throughout Earth's history. (usgs.gov)
  • When Columbus Gold acquired Stevens Basin (where drilling by joint-venture partner Navaho Gold is ongoing), it was recognized that the greater Mahogany Hills area, west and southwest of Eureka, Nevada, presented a favorable geologic setting for Carlin-type gold deposits. (newsreview.com)
  • The Carlin trend, a belt of gold deposits in northeastern Nevada, is of such richness that in the mining industry its name has been attached to sediment-hosted, disseminated gold deposits-a "Carlin-type gold deposit. (newsreview.com)
  • To give one example, by reconstructing depositional environments of certain sediments deposited along the coast of the Pacific Northwest, geologists concluded that great subduction earthquakes and tsunamis (giant waves) created by the earthquakes, were the driving forces of the depositional environment of those sedimentary deposits. (wvc.edu)
  • However, in many continental margin settings, reduced carbon can also be added to sediments from below-for example, from "deep" geologic hydrocarbon reservoirs derived from ancient source rocks or from the decomposition of deeply buried gas hydrate deposits. (yale.edu)
  • The setting for volcanic-sedimentary deposits may have been a rifted oceanic basin. (blogspot.com)
  • Salt deposits, a remnant of an ocean that existed some 200 million years ago, behave in a certain way when overlain by heavy sediments. (bldgblog.com)
  • The Santa Fe Group is the name geologists have given to all the sediments that have accumulated in the Rio Grande Rift, a great crack in the Earth's crust that stretches from central Colorado to the El Paso area and more or less coincides with the valley of the Rio Grande. (kgbudge.com)
  • Reconstructing depositional environments enables geologists to observe climates of the past, life forms of the past, and geography of the past -- the location of mountains, basins, large rivers, and bays of the ocean. (wvc.edu)
  • Geologists and satellite sensors see similar features in Wyoming's Great Divide Basin. (nasa.gov)
  • The use of multivariate analysis showed that the major parameters that explained the water quality variability were the nutrients in the water column, and trace elements in the sediments. (unboundmedicine.com)
  • These results indicate that authigenic carbonate precipitation in these sediments is not centered around the sulfate-methane transition zone (SMTZ), as is seen in many other sedimentary environments but occurs at shallower depths in the sediments and over a relatively broad depth range. (yale.edu)
  • The results presented further here indicate the importance of a deep methane flux from below on sediment biogeochemistry in the shallower sediments, although the exact source of this methane flux is difficult to ascertain with the existing data. (yale.edu)
  • The moving salt fractured and faulted the overlying brittle sediments, in turn creating natural pathways for deep oil and gas to seep upward through the cracks and form reservoirs within shallower geologic layers. (bldgblog.com)
  • Campos and Santos Basins: 40 years of reservoir characterization and management of shallow- to ultra-deep water, post- and pre-salt reservoirs - historical overview and future challenges. (usp.br)
  • We integrate seismic reflection profiles, surface kinematic data and the relocation of seismological data in order to identify and characterize strike-slip active faults geometry at depth in the Valdelsa basin of southern Tuscany. (copernicus.org)
  • Multifold seismic reflection and geologic mapping in part of the eastern branch of the East African Rift system of northern Kenya reveal a major rift structure containing at least 3 km of Neogene sediment fill beneath Lake Turkana. (syr.edu)
  • The channel full of Pilar Formation fragments was subsequently buried by more Chamita Formation sediments. (kgbudge.com)
  • Sediments consist of sandstones of the Jizera Formation (Turonian). (geology.cz)
  • This was followed by the sagging of the granite-greenstone crust and the formation of new sedimentary basins. (blogspot.com)
  • Sediment provenance studies of the Sespe Formation within the Los Angeles Basin region suggest sediment sources within regions as far east-northeast as the present-day Arizona Transition Zone. (stonybrook.edu)
  • A geologic formation or part of a formation (such as gravel, sand, or porous stone) that supplies water to wells or springs. (cdc.gov)
  • When a tectonic phase occurred while sedimentation of new sediments continued, every new layer will have a slightly different dip from the one below. (wikipedia.org)
  • Kim says the tank at the Pickle Research Campus will be one of just three in the world with computer controls that can move and manipulate the unit's floor to replicate tectonic subsidence and its impacts on river basins. (utexas.edu)
  • Using basic variables that simulate tectonic subsidence, sea level, and sediment input, scientists can observe patterns, like the migration of shorelines, the infill of deltas, and the morphology, or changing patterns, of stream channels. (utexas.edu)
  • The Appalachian Basin encompasses much of present Pennsylvania and Maryland, all of West Virginia, and parts of Ohio, Virginia, Kentucky, and Tennessee. (wvencyclopedia.org)
  • The term ''Appalachian Basin'' is commonly used among fossil fuel prospectors and developers to refer to the portion of that ancient sedimentary basin that now contains those fossil fuels and other minerals such as salt and salt brines. (wvencyclopedia.org)
  • The mineral resources of the Appalachian Basin were recognized early in the region's settlement history, and in fact were used to some extent by the native tribes. (wvencyclopedia.org)
  • Mullennex, Ron "Appalachian Basin. (wvencyclopedia.org)
  • Through the application of OSL, the age framework of the uppermost part of sediments in the study area was established. (lu.se)
  • Scientists tuned the Newark Basin astrochronology to the 405 thousand year Milankovitch Cycle and then tied it to the geologic time scale using magnetic polarity reversals and high-resolution radiometric dates from basalt interbedded with the uppermost sediment layers. (wattsupwiththat.com)
  • Navigation channels now dominate the hydrology of the basin. (lacoast.gov)
  • Discussion of current research or advanced topics in landscape evolution, surface hydrology, mechanics of sediment transport, basin analysis, or experimental geomorphology. (asu.edu)
  • These outstanding examples of cataclysmic flood geology, exceptional scenery, and places for scientific research are all part of the Ice Age Floods National Geologic Trail. (nps.gov)
  • But the basic geology is that it's a basin, and over 500 million years, the center of Michigan, which is somewhere in the vicinity of Mount Pleasant, has been slowly sinking, and that's what we call a geologic basin. (greatlakesnow.org)
  • This naturally leads to the need to understand the geologic record and provides a powerful segue to more traditional geology 101 topics. (asu.edu)
  • A depositional environment is a specific type of place in which sediments are deposited, such as a stream channel, a lake, or the bottom of the deep ocean. (wvc.edu)
  • The layers of sediment that accumulate in each type of depositional environment have distinctive characteristics that provide important information regarding the geologic history of an area. (wvc.edu)
  • Computations of sedimentation rates indicate that Pleistocene sediments were deposited from 25 to 500% faster than those in the Recent. (geoscienceworld.org)
  • This Triassic rift basin hosts rhythmically alternating lake and fluvial sediments that reflect lake expansion and shrinkage as the climate changed. (wattsupwiththat.com)
  • This upwelling simultaneously stretched and uplifted the overlying crust, forming the Basin and Range Province and opening the Rio Grande Rift. (kgbudge.com)
  • The basin soils, which are 87 percent organic and support lower salinity marsh vegetation, are infiltrated by the more saline waters. (lacoast.gov)
  • Journal of Soils and Sediments, 12(9), 1479-1495. (usp.br)
  • The ages of geologic material in the Jornada vicinity range from Precambrian granites to Historical eolian and arroyo sediments. (nmsu.edu)
  • In the Sabine Basin, subsidence and sea level rise result in an average water level rise of 0.25 inches per year. (lacoast.gov)
  • Stratigraphic scientists have studied the impacts of "allogenic" forces-subsidence, sediment and sea level-but Kim's work has demonstrated that the internal elements are essential to correctly deciphering the impacts of forces in sedimentary records. (utexas.edu)
  • By 2018, they had produced an identical astrochronology that confirms that no cycles are missing from the Newark Basin section and therefore "cements" its reliability. (wattsupwiththat.com)
  • The sands and other sediments deposited at this time are the materials that have since hardened to form the bedrock of the area. (redrivergorge.com)
  • What we learn about the the geologic history of a region comes mostly from examining the layers of sedimentary rock from the area and determining their depositional environments. (wvc.edu)
  • Sediments have been deposited in the past in environments that do not exist in the present, such as an atmosphere with no free oxygen, or an environment disturbed catastrophically by a gigantic meteorite impact. (wvc.edu)
  • The repetitive occurrence of these pulses of sediment due to change in the Mississippi Rivers course helped to build the systems of cheniers (oak ridges) in the basin. (lacoast.gov)
  • Freshwater inflow to the basin occurs primarily through these lakes via the Calcasieu and Sabine rivers. (lacoast.gov)
  • Flood control projects on the Mississippi and Atchafalaya rivers, and construction of jetties on the Mermentau River, Calcasieu Ship Channel, and at Sabine Pass, have altered long shore sediment transport and sediment availability. (lacoast.gov)
  • Salt filled the basin to depths of thousands of meters until it was opened to the ancestral Atlantic Ocean and consequently regained open marine circulation and normal salinities. (bldgblog.com)
  • August 2020: Reconnaissance for later lake sediment corings around a new-found Stone Age camp site (Mesolithic, c. 9000 years back) at Sammakko, northernmost Sweden. (lu.se)
  • The Aravalli fold mountains are made up of layers of sediments interlayered with volcanic rocks. (blogspot.com)
  • Sediments and interlayered basalt volcanic layers were deposited in contemporaneous basins. (blogspot.com)
  • The result was a complicated terrain with slices of granite gneiss (metamorphosed TTG) interleaved with low to medium grade metamorphic rocks like chlorite and amphibolite schists (metamorphosed basalt and other volcanic rocks and sediments). (blogspot.com)
  • To examine the impact of these two differing reduced carbon inputs on sediment biogeochemistry, a modified reaction-transport model for anoxic marine sediments is described here and applied to data from sediment cores in Santa Barbara Basin to a depth of 4.6 m. (yale.edu)
  • Basin cores off southern California reveal that modern dextral forms have persisted for about 11,000 years and were preceded by sinistral populations in the late Pleistocene, as determined by radiocarbon dating. (geoscienceworld.org)
  • The latter probably have been preferentially flushed down stream because of high transporting capacities for sediment by streams in the east. (gsnv.org)
  • Previously, the mineral endowment of the area was largely unknown and there existed only partial 1:250,000-scale geologic reconnaissance mapping. (cdc.gov)
  • The Petrified Forest/Newark Basin astrochronology has had many important implications. (wattsupwiththat.com)
  • Nd and Pb isotope signatures on the Southeastern South American upper margin: implications or sediment transport and source rocks. (usp.br)
  • Early continental nuclei were separated by oceanic basins. (blogspot.com)
  • Superheavy S isotopes from glacier-associated sediments of the Neoproterozoic of south China: Oceanic anoxia or sulfate limitation? (geoscienceworld.org)
  • The second geological phase is the process of diagenesis and how the sediments were buried and turned into rock. (redrivergorge.com)
  • Sediments & Rocks Carbonates Carbonate Classification Carbonate Petrology Carbonate Facies Diagenesis and Porosity Carbonate Sequences Evolution of Carbonate Seq. (anthonyflood.com)
  • Dr. Flemings' research couples observation with theoretical analysis to study crustal fluid flow at human and geologic timescales. (utexas.edu)
  • He leads an industry-supported research consortium (UT GeoFluids) that combines geomechanical modeling, experimental analysis, and field study to study pore pressure and fluid flow in basins. (utexas.edu)
  • The Permian Basin is almost unique in that it has so many oil and gas producing rock formations stacked one on top of each other, called multiple stacked plays, each of which is more than a thousand feet thick, ranging in depths from a few hundred feet to five miles below the surface (see figure from Tarka ). (forbes.com)
  • With time and the tremendous pressures of burial and later mountain building, the thousands of feet of sediment became rock, containing the great mineral wealth of today's Appalachia. (wvencyclopedia.org)
  • A distribution model of the spatial variation of these isotopes, the frst of its kind for the Basin, supported the interpretation of similar tendencies in their distribution. (usp.br)
  • The geologic strata that occur in that area were deposited as sediments of mud, sand, silt, lime muds, and peat that today are sedimentary rocks such as sandstone, siltstone, shale, limestone, and coal beds. (wvencyclopedia.org)
  • Other sedimentary basins occur in other parts of the United States and around the world, and are the sources of the world's fossil fuel supplies, along with other important mineral resources. (wvencyclopedia.org)
  • However, model results show that linear profiles may also occur when high rates of sulfate reduction occur near the sediment surface (as organoclastic sulfate reduction [oSR]) and in the SMTZ (largely as anaerobic oxidation of methane) with low, but nonzero, rates of oSR in-between. (yale.edu)
  • A , striations on the sea floor are truncated estuarine and marine sediment. (usgs.gov)
  • Elevated levels of radium-226 and radium-228 in marine sediments of the Norwegian Trench ("Norskrenna") and Skagerrak. (usp.br)
  • The primary input of organic matter to almost all marine sediments comes from deposition at the sediment surface. (yale.edu)
  • Some of the world's largest and most valuable manganese resources formed as shallow-marine chemical sediments. (geoscienceworld.org)
  • As geologic time progressed, river deltas and marine microfossils deposited thousands more meters of sediments into the basin, atop the thick layer of salt. (bldgblog.com)
  • Each stratigraphic unit ( fig. 9 ) crops out at the sea floor in the study area ( fig. 16 ), and the areal distributions of the units are closely related to surficial sediment distributions ( fig. 17 ) and physiographic zone ( fig. 19 ) interpretations. (usgs.gov)
  • however, they are outside of the area of the geologic map and are not included in the geospatial data. (usgs.gov)
  • The core of the Red River Basin is the 'Gorge' which has been rightly designated a national 'Geological Area. (redrivergorge.com)
  • Similarities between fault-controlled small basins in the highest portion of the massifs in the study area and the neighboring 1980 Irpinia area (1980 earthquake, M w 6.9) are interpreted as evidence of trans-ridge fault activity. (nature.com)
  • The study area (from the Auletta to Val d'Agri basins) and its surroundings (Fig. 1 ) correspond to one of the most seismically active areas in Italy 3 , 4 . (nature.com)
  • Fugro's MEGATEM II system is a deep penetrating, high-resolution electromagnetic and magnetic geophysical system capable of identifying conductors in basement rocks that can be overlain by thick sandstone basin infill. (diamondsnorthresources.com)
  • By the time excavation had been completed, the team consisting of more than 250 volunteers and 40 project scientists removed approximately 8000 cubic meters of sediment. (wikipedia.org)
  • Stratigraphers "tune" the chronology of a rhythmic rock sequence to Milankovitch Cycle beats and then anchor those beats to the geologic time scale using radiometric and paleomagnetic dates to produce an astrochronology . (wattsupwiththat.com)
  • And geologic basins tend to fill with sediments, but they fill with different kinds of sediments, depending on the environment at the time. (greatlakesnow.org)
  • The basin continued to subside through that tremendously long stretch of time, and to receive sediment from adjacent lands to the west and east. (wvencyclopedia.org)
  • At that time, the Sacramento River drained through the Golden Gate and eroded a valley ("the San Francisco paleovalley") that was filled with sediment during subsequent sea-level rise. (gpsworld.com)
  • Reconstructing earth history -- By analyzing a sedimentary rock, a geologist can deduce what was happening on earth at the place and time the sediment was originally being deposited. (wvc.edu)
  • Changes over time in climate, life forms and geography constitute the geologic history of a region. (wvc.edu)
  • Sedimentary rocks contain sedimentary structures that were formed as the sediments were being deposited. (wvc.edu)
  • The objective of the survey is to identify conductive graphitic sediments that are spatially associated with geologic structures and uranium mineralization. (diamondsnorthresources.com)
  • Sandier sediment is also associated with places where Qmn forms shoals and beaches from modern shorelines and paleoshorelines. (usgs.gov)
  • Once it's completed in summer 2010, Kim and his colleagues will be able to fill the flume tank with water and sediment to simulate how shorelines and deltas take form. (utexas.edu)
  • The thickest young sediment in the region occurs in the "San Andreas graben," a basin that formed by crustal down dropping along the offshore section of the San Andreas fault. (gpsworld.com)
  • TSX-V: DDN) announce that Pathfinder has entered into a contract with Fugro Airborne Surveys to conduct a comprehensive airborne geophysical survey over the Thelon Basin Uranium Project in the Northwest Territories, Canada. (diamondsnorthresources.com)
  • It was originally mudstone rich in organic matter that settled to the bottom of a stagnant basin on what was then the southern edge of North America. (kgbudge.com)
  • The sediments were deeply buried, lithified, and compressed and heated by subsequent mountain-building events ( orogenies ) to become a hard, dense black rock, mostly quartz and mica, but thoroughly permeated with graphite from the organic matter. (kgbudge.com)
  • The first is the accumulation of sediments in an ancient coastal river plain starting about 340 million years ago. (redrivergorge.com)
  • Long before our mountains were formed, the Appalachian geosyncline existed as a low-lying basin, mostly to entirely covered by a shallow sea. (wvencyclopedia.org)
  • Predominant sediment types include Ms, Sm, and S. Sandier sediment is associated with Qfe/Qmn close to shore and close to outcrops of glacial drift where coarse sediment has been reworked and mixed with fine-grained sediment. (usgs.gov)
  • As he studied the Channeled Scabland and the intermountain basins of Montana in 1910, he found high water marks near Missoula, Montana-evidence of a large glacial lake. (nps.gov)
  • Later, in the Camas Prairie of northwestern Montana, he discovered giant ripple marks of sediment made by powerful currents flowing over the bottom of ancient Glacial Lake Missoula. (nps.gov)
  • In total over 36,000 vertebrate fossils (including mammoths , mastodons , ground sloths , horses , camels and deer ), more than 100 species of fossil invertebrates and over 100 species of fossil plants were found in sediments deposited by an alpine lake during the last interglacial period . (wikipedia.org)
  • Application of the Petrified Forest/Newark Basin astrochronology to mid-latitude fossil sites in Argentina and Greenland, and to low-latitude sites in Canada's Fundy Basin and Petrified Forest, now confirm the delay in tropical dinosaur dominance is real. (wattsupwiththat.com)
  • This is usually the case on the margins of geologic basins. (wikipedia.org)
  • As a master's student in South Korea, he completed a three-dimensional computational model for sediment transport. (utexas.edu)
  • The dominant sediment types include G, Gs, Sg, and S, which are associated physiographic zones mapped as Hard-Bottom Plains ( fig. 19 ). (usgs.gov)
  • Whenever the Mississippi River established a westerly course, large quantities of reworked riverine sediment were deposited along the gulf shore, resulting in southerly growth of the shoreline. (lacoast.gov)
  • The [Gulf of Mexico] was initially an enclosed, restricted basin into which seawater infiltrated and then evaporated in an arid climate, causing the hypersalinity (similar to what happened in the Great Salt Lake in Utah and the Dead Sea between Israel and Jordan). (bldgblog.com)
  • Coupled climate and 4-D thermomechanical lithosphere modeling performed to date indicate that the timing of uplift and tilt of the Colorado Plateau (CP) have a significant influence on the source and volume of sediments supplied to the Sespe Delta region. (stonybrook.edu)
  • Three-dimensional stratigraphic-sedimentological forward modeling of an Aptian carbonate reservoir deposited during the sag stage in the Santos basin, Brazil. (usp.br)
  • The purpose of this work was to evaluate the dynamic of the water quality from the Alqueva reservoir (Guadiana River Basin, Portugal) and identify the most important parameters that influence its ecological and chemical status. (unboundmedicine.com)
  • Coal and Uranium Investigation of the Yukon Flats Cenozoic Basin. (cdc.gov)
  • Pitted cones are common features in the northern plains basins of Mars. (usgs.gov)
  • Qfe/Qmn is associated with Nearshore Basin zones and to a lesser extent Nearshore Ramp ( fig. 19 ). (usgs.gov)
  • They have been proposed to have formed from upwelling volatile-rich fluids, such as magma or water-sediment slurries. (usgs.gov)
  • Calcasieu and Sabine lakes are the major water bodies within the basin. (lacoast.gov)
  • Consequently, marshes between Sabine and Calcasieu Lakes have become a large interlinked system with water draining and circulating to the northern, eastern, and western portions of the basin. (lacoast.gov)
  • Many of those ancient landscapes left behind clues in the form of rock layers-sandy or muddy sediments deposited by wind and water that later hardened into rock. (nasa.gov)