The probability of fossilization is investigated by taphonomists and geologists, who have concluded that it usually is very low. |
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Hydrocarbons are divided into groups of which those of especial interest to geologists are the paraffin, cycloparaffin and aromatic groups. |
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The assessment of specific earthquake hazards has involved seismologists, geologists, and earthquake engineers. |
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As I speak, geologists are in the field and continuing to install what will be a total of 50 seismometers. |
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The samples are of particular interest to geologists because they contain large amounts of the element, osmium. |
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A key turning point in church history was caused by a meteorite shower, Swedish geologists have claimed. |
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Company geologists regularly visit stopes and development headings to gather samples, map local geology, and give direction to miners. |
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Nevertheless, it is via this slow accumulation of calcareous ooze on the deep ocean floor that geologists believe chalk beds originally formed. |
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Nineteenth-century geologists, basing their estimate on sedimentary rock strata, gauged Earth's age to be hundreds of millions of years. |
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However, in recent decades geologists have been saying that the gradualistic uniformitarianism of Charles Lyell does not match the evidence. |
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The question of why the plates move gets passed on to the geologists, who appeal to an upwelling of magma that pushes them apart. |
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According to geologists, mountains are formed because of volcanic activity or the movement of the plates of the earth. |
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The age of some of the rocks in the area has been a subject of debate by geologists for over 150 years. |
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Planetary geologists, however, know little about the lower mantle of the Moon, so no one knows whether it is chondritic. |
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Put the question to a group of geologists and they'll mention plate tectonics and volcanic hot spots. |
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But geologists said if a tsunami has not been sighted within three hours local authorities could assume the danger had passed. |
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It is also probably inevitable that six geologists will not stay unanimous for very long. |
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The ground I was walking on was once covered by a vast inland sea, I'm told by the godless geologists. |
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In Greenland, they conducted fieldwork along with other geologists who had come on the same ship. |
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The discovery of Earth's stripes, in the 1960s, led geologists to accept the theory of plate tectonics. |
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And, in early April, geologists had noted that the northern flank of the mountain was beginning to bulge ominously. |
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The society's electronic library regularly publishes technical papers by field geologists. |
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There is a growing belief among the geologists who study world oil supply that world oil production is soon headed into an irreversible decline. |
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The core was recently extracted from beneath the floor of the crater so that geologists could examine the stratigraphic evidence. |
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More than 1,400 scientists, engineers, and geologists from 50 countries downloaded the company's data and started their virtual exploration. |
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The idea of planetary accretion from cold matter was subsequently to be developed by several other geologists and cosmologists. |
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Most geologists are familiar with the occurrence of plant compression fossils in bedded sedimentary rocks. |
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Zircon is rarely present in large quantities in any one rock, making it what geologists call an accessory mineral. |
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Darwin corresponded with numerous biologists, breeders, and geologists in the course of gathering his material. |
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So if we think on that time scale, if we think as far ahead as geologists are accustomed to think backwards into the past, then it's not crazy. |
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At that time, early geologists and naturalists started trying to scientifically study the ways soils and rock layers had accumulated over time. |
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We can't begin to imagine how the geologists survived so long in this wild and desolate place. |
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Because early geologists did not find recent glacial drift in the region, it became known as the Driftless Area. |
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So many blobs are simply the result of stacked geodesics, like Grimshaw's Eden project, a series of bubble-forms that remind me of what geologists call globular clusters. |
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Not only was very little known about the geological features of the earth, but at that time there were no university degrees in geology and no professional geologists. |
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For this reason, we asked local creationist geologists, very familiar with the geology of the area, to show us any apparent field evidence for ancient soils. |
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Echoing Cole's sense of the sublime, geologists saw the landscape as a dynamic expression of inhuman forces operating over vast stretches of time. |
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The naysaying marine geologists who love to point out that there is no geological evidence at all for a sunken continent on the Atlantic Ocean floor are absolutely right. |
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This hidden Eden continues to baffle geologists with its oculus of volcanic stone. |
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Also, I feel sure that professional geologists, mineralogists, and petrologists who read the booklet will see several definitions they would modify. |
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Lectures will cover both species and locality mineralogy and will be presented by professional mineralogists and geologists, mining engineers, and professors. |
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The established idea that granitoid magmas ascend through the continental crust as diapirs is being increasingly questioned by igneous and structural geologists. |
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Ice contact features known to early geologists included kettles and kames. |
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In time, seismograph recordings enabled geologists to determine that Earth has a dense core surrounded by a slowly flowing mantle and a thin outer crust. |
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Seismologists, geologists, and tectonophysicists discuss the dynamics of earthquakes, floods, landslides and severe storms, and how they have shaped the Earth. |
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So far, it is science, not mineral stakes that motivates geologists like Ventura. |
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In the 1980s, geologists in Moscow found several small diamonds and minerals, such as zircon, garnet, and corundum, in the alluvia of the River Karla. |
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Last year six British geologists went diving in Greenland in search of ikaite, a rare form of calcium carbonate, which grows from the fjord floor in columns. |
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Forty years ago, hardly any geologists believed in continental drift. |
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Instead, geologists and paleontologists use stratigraphic names. |
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Later geologists described the lakes as basins scooped out by glaciers. |
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That time, part of an interval of Earth's history called the Devonian Period by scientists such as geologists and paleontologists, is known popularly as the Age of Fishes. |
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Mining engineers are involved in the mineral discovery stage by working with geologists to identify a mineral reserve. |
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He interviews physicists, geologists, firefighters and instructors who teach firewalking at corporate team-building seminars. |
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However, his ideas were not taken seriously by many geologists, who pointed out that there was no apparent mechanism for continental drift. |
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It was only during the 19th century that geologists realized Earth's age was at least many millions of years. |
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Researchers include biologists, geologists, oceanographers, physicists, astronomers, glaciologists, and meteorologists. |
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Pangaea was the most recent supercontinent to have existed and the first to be reconstructed by geologists. |
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Most geologists believe it was composed primarily of nitrogen, carbon dioxide, and other relatively inert gases, and was lacking in free oxygen. |
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However, Gulf Coast geologists do not regard this hypothesis as having any credibility. |
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In the 1960s, geologists discovered and began to propose mechanisms for seafloor spreading. |
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These periods form elements of a hierarchy of divisions into which geologists have split the Earth's history. |
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Later these deposits have the potential to become hydrocarbon seals and are of particular interest to petroleum geologists. |
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According to geologists, the Bay of Bengal holds large untapped gas reserves in Bangladesh' exclusive economic zone. |
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It has become especially useful to metamorphic and igneous geologists where index fossils are seldom available. |
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For an introduction to the radiocarbon dating techniques used by archaeologists and geologists, see radiocarbon dating. |
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The ascent and emplacement of large volumes of granite within the upper continental crust is a source of much debate amongst geologists. |
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At Lyme Regis, for example, geologists have identified 71 layers of rock, each one containing fossils of a different species of ammonite. |
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To study all three types of rock, geologists evaluate the minerals of which they are composed. |
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Some geologists disagree about what created the semicircular feature, known as the Nastapoka arc, of the bay. |
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Previously, geologists could only use fossils and stratigraphic correlation to date sections of rock relative to one another. |
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There have been discrepancies among geologists on the origin of the Patagonian landmass. |
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Visual aids are diagrams that allow geologists to interpret different characteristics about a sandstone. |
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Sedgwick's subsequent investigations and discussions with continental geologists persuaded him that this was problematic. |
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In the late 1960s, UN geologists also discovered major uranium deposits and other rare mineral reserves in Somalia. |
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The military and geologists employ strong sonar and produce an increases in noise in the oceans. |
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A combination of gravity anomaly data and boreholes has permitted geologists to work out the shape of this pluton. |
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Sand fences might also slow their movement to a crawl, but geologists are still analyzing results for the optimum fence designs. |
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The Mars Exploration Rovers will act as robot geologists while they are on the surface of Mars. NASA site. |
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If we look more broadly in Gale Crater, we can see that there is a prominent feature that geologists call an alluvial fan. |
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CheMin uses X-ray diffraction, which is also used by geologists on Earth who operate larger laboratory tools. |
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In the early 1960s, geologists took their first shot at drilling all the way through Earth's crust and into its mantle with the Mohole Project. |
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Chalcopyrite and molybdenite mineralization was observed by site geologists in varying amounts and continuities in a number of the holes drilled. |
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Company geologists believe this block acted as a significant fluid trap in the contact zone with the quartz monzonite to the north-east. |
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Because they evolved rapidly, they aid geologists in dating the surrounding rocks. |
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The evidence for such an erstwhile joining of these continents was patent to field geologists working in the southern hemisphere. |
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Today the geologists of different nations are taking more of an interest in Pleistocene glaciology. |
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The name Devensian glaciation is used by British geologists and archaeologists and refers to what is often popularly meant by the latest Ice Age. |
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On the Island of Hawaii, geologists have long recognized deposits formed by glaciers on Mauna Kea during recent ice ages. |
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The last of the North American proglacial lakes, north of the present Great Lakes, has been designated Glacial Lake Ojibway by geologists. |
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Other geologists, without going to see for themselves and driven by uniformitarian dogma, absolutely refused to accept a catastrophic explanation. |
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Irish geologists, geographers, and archaeologists refer to the Midlandian glaciation as its effects in Ireland are largely visible in the Irish Midlands. |
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Initially, when the ice began melting about 10,300 BP, seawater filled the isostatically depressed area, a temporary marine incursion that geologists dub the Yoldia Sea. |
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In 1839 Charles Barry toured Britain, looking at quarries and buildings, with a committee which included two leading geologists and a stonecarver. |
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Many geologists, however, do not agree on how to separate the triangle parts into the single components so that the framework grains can be plotted. |
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The controversy is over how much they contribute to Earth's overall reserves and how much time and effort geologists should devote to seeking them out. |
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Four chemists and geologists from the Ethiopian Geological Survey were arrested in connection with a fake gold scandal, following complaints from buyers in South Africa. |
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The use of the Nebraskan, Afton, Kansan, and Yarmouthian stages to subdivide the ice age in North America has been discontinued by Quaternary geologists and geomorphologists. |
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Modern geologists surmise that these formations of clay, gravel and rocks are moraines formed by the action of melting glaciers end of the last ice age. |
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By combining these tools, geologists are able to chronicle the geological history of the Earth as a whole, and also to demonstrate the age of the Earth. |
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Although planetary geologists are interested in studying all aspects of other planets, a significant focus is to search for evidence of past or present life on other worlds. |
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Petroleum geologists study the locations of the subsurface of the Earth which can contain extractable hydrocarbons, especially petroleum and natural gas. |
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Biostratigraphy, the use of fossils to work out the chronological order in which rocks were formed, is useful to both paleontologists and geologists. |
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The local record for that time interval is missing and geologists must use other clues to discover that part of the geologic history of that area. |
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Such lakes are also denoted fjord valley lakes by geologists. |
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The consensus among geologists who have studied the geology of the Gulf of Mexico, is that prior to the Late Triassic, the Gulf of Mexico did not exist. |
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This first eruption, in the form of a fissure vent, did not occur under the glacier and was smaller in scale than had been expected by some geologists. |
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In the early 20th century, geologists first noticed that some volcanic rocks were magnetized opposite to the direction of the local Earth's field. |
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Fracture propagation is the mechanism preferred by many geologists as it largely eliminates the major problems of moving a huge mass of magma through cold brittle crust. |
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Many geologists and seismologists believe that the main shock in the 1992 sequence may be a forerunner of a much more powerful earthquake in the Pacific Northwest. |
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Some geologists have argued that Hudson Bay is possibly related to a Precambrian extraterrestrial impact and have compared it to Mare Crisium on the Moon. |
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They were separated by an ocean, called the Iapetus Ocean by geologists. |
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This accretion process is thought by many geologists to be the reason for the crustal growth of western North America and of the uplift that produced the Rocky Mountains. |
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This creates a landscape geologists call karst, which lacks surface drainage but which has all manner of characteristic surface and subsurface features. |
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As the intrusive igneous origin of the Whin Sill was determined in the 19th century, the term 'sill' was adopted by geologists for concordant, tabular intrusive bodies. |
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Many hypotheses have been proposed to explain their origin and this remains a topic of discussion among geologists and geomorphologists, and physical geographers. |
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In the 21st century, however, the preferred usage of ria by geologists and geomorphologists is to refer solely to drowned unglaciated river valleys. |
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The earliest geological period of the Paleozoic era, the Cambrian, takes its name from the Cambrian Mountains, where geologists first identified Cambrian remnants. |
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Transportation through rough terrain is one of many hazards faced by OGS crews out in the field, where geologists and summer students collect data used in mineral exploration. |
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The volume should be of interest to a wide range of readership, from sedimentologists and structural geologists to geochemists, geophysicists and computer modelers. |
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The group consists of approximately 200 persons, 70 percent of whom are degreed professionals, principally geologists, geophysicists and geochemists. |
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Geoscientists, or geologists, are involved in the scientific study of the structure, evolution and dynamics of the Earth and its natural resources. |
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Additionally, tin and tantalum mineralisation, in quartz and pegmatite veins within a granodiorite host, has been identified by on-site geologists in a number of samples. |
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According to UAE geologists, the earthquake risks are slightly higher in the northern and eastern parts of the UAE for their proximity to the Iranian fault line. |
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