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Geofact
A geofact (a portmanteau of ''geology'' and ''artifact'') is a natural stone formation that is difficult to distinguish from a man-made artifact. Geofacts could be fluvially reworked and be misinterpreted as an artifact, especially when compared to paleolithic artifacts. Some of the proposed criteria for distinguishing geofacts from artifacts for paleolithic specimens resembling debitage have been subjected to evaluation by experimental and actualistic studies. If the artifact has two or more of the following, then the artifact is more than likely to be a geofact. Possible examples include several purported prominent ancient artifacts, such as the Venus of Berekhat Ram and the Venus of Tan-Tan The Venus of Tan-Tan (supposedly, 500,000-300,000 BP) is an alleged artifact found in Morocco. It and its contemporary, the Venus of Berekhat Ram, have been claimed as the earliest representations of the human form. Description The Venus of Ta .... These are thought by many in the arc ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Marine Archaeology In The Gulf Of Cambay
Marine archeology in the Gulf of Khambhat - earlier known as Gulf of Cambay - centers around controversial findings made in December 2000 by the National Institute of Ocean Technology (NIOT) under the Gulf of Khambhat, a bay on the Arabian Sea on the west coast of India. The structures and artifacts discovered by NIOT are the subject of contention. The major disputes surrounding the Gulf of Khambhat Cultural Complex (GKCC) are claims about the existence of submerged ''city-like structures'', the difficulty associating dated artifacts with the site itself, and disputes about whether stone artifacts recovered at the site are actually geofacts or artifacts. One major complaint is that artifacts at the site were recovered by dredging, instead of being recovered during a controlled archeological excavation. This leads archeologists to claim that these artifacts cannot be definitively tied to the site. Because of this problem, prominent archeologists reject a piece of wood that was reco ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Eolith 04 Boule
An eolith (from Greek "''eos''", dawn, and "''lithos''", stone) is a knapped flint nodule. Eoliths were once thought to have been artifacts, the earliest stone tools, but are now believed to be geofacts (stone fragments produced by fully natural geological processes such as glaciation). The first eoliths were collected in Kent by Benjamin Harrison, an English amateur naturalist and archaeologist, in 1885 (though the name "eolith" was not coined until 1892, by J. Allen Browne). Harrison's discoveries were published by Sir Joseph Prestwich in 1891, and eoliths were generally accepted to have been crudely made tools, dating from the Pliocene. Further discoveries of eoliths in the early 20th century – in the Red Crag Formation and Norwich Crag Formation of East Anglia by J. Reid Moir and E. Ray Lankester and in continental Europe by Aimé Louis Rutot and H. Klaatsch – were taken to be evidence of human habitation of those areas before the oldest known fossils. The ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Artifact (archaeology)
An artifact, or artefact (see American and British English spelling differences), is a general term for an item made or given shape by humans, such as a tool or a work of art, especially an object of archaeological interest. In archaeology, the word has become a term of particular nuance and is defined as an object recovered by archaeological endeavor, which may be a cultural artifact having cultural interest. Artifact is the general term used in archaeology, while in museums the equivalent general term is normally "object", and in art history perhaps artwork or a more specific term such as "carving". The same item may be called all or any of these in different contexts, and more specific terms will be used when talking about individual objects, or groups of similar ones. Artifacts exist in many different forms and can sometimes be confused with ecofacts and features; all three of these can sometimes be found together at archaeological sites. They can also exist in different t ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Portmanteau
A portmanteau word, or portmanteau (, ) is a blend of wordsGarner's Modern American Usage , p. 644. in which parts of multiple words are combined into a new word, as in ''smog'', coined by blending ''smoke'' and ''fog'', or ''motel'', from ''motor'' and ''hotel''. In , a portmanteau is a single morph that is analyzed as representing two (or more) underlying s. When portmanteaus shorten es ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Rock (geology)
In geology, rock (or stone) is any naturally occurring solid mass or aggregate of minerals or mineraloid matter. It is categorized by the minerals included, its chemical composition, and the way in which it is formed. Rocks form the Earth's outer solid layer, the crust, and most of its interior, except for the liquid outer core and pockets of magma in the asthenosphere. The study of rocks involves multiple subdisciplines of geology, including petrology and mineralogy. It may be limited to rocks found on Earth, or it may include planetary geology that studies the rocks of other celestial objects. Rocks are usually grouped into three main groups: igneous rocks, sedimentary rocks and metamorphic rocks. Igneous rocks are formed when magma cools in the Earth's crust, or lava cools on the ground surface or the seabed. Sedimentary rocks are formed by diagenesis and lithification of sediments, which in turn are formed by the weathering, transport, and deposition of existing ro ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Fluvial
In geography and geology, fluvial processes are associated with rivers and streams and the deposits and landforms created by them. When the stream or rivers are associated with glaciers, ice sheets, or ice caps, the term glaciofluvial or fluvioglacial is used. Fluvial processes Fluvial processes include the motion of sediment and erosion or deposition on the river bed. The movement of water across the stream bed exerts a shear stress directly onto the bed. If the cohesive strength of the substrate is lower than the shear exerted, or the bed is composed of loose sediment which can be mobilized by such stresses, then the bed will be lowered purely by clearwater flow. In addition, if the river carries significant quantities of sediment, this material can act as tools to enhance wear of the bed ( abrasion). At the same time the fragments themselves are ground down, becoming smaller and more rounded (attrition). Sediment in rivers is transported as either bedload (the coarser fr ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Debitage
In archaeology, debitage is all the material produced during the process of lithic reduction – the production of stone tools and weapons by knapping stone. This assemblage may include the different kinds of lithic flakes and lithic blades, but most often refers to the shatter and production debris, and production rejects. Debitage analysis Debitage analysis, a sub-field of lithic analysis, considers the entire lithic waste assemblage. The analysis is undertaken by investigating differing patterns of debris morphology, size, and shape, among other things. This allows researchers to make more accurate assumptions regarding the purpose of the lithic reduction. Quarrying activities, core reduction, biface creation, tool manufacture, and retooling are believed to leave significantly different debitage assemblages. Lithic manufacture from a quarried source, or from found cobbles also leave different signatures. Some claim that they can determine the sort of tools used to crea ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Venus Of Berekhat Ram
The Venus of Berekhat Ram (280,000-250,000 BP) is a pebble found at Berekhat Ram on the Golan Heights. The pebble was modified by early humans and is suggested to represent a female human figure. Description The object was excavated and first described by Naama Goren-Inbar from the Institute of Archaeology, The Hebrew University of Jerusalem. The artifact is a scoria pebble, 35 mm long, 25 mm wide, and 21 mm thick. It weighs approximately 10 g. It was excavated in 1981 at the Acheulian site of Berekhat Ram, Golan Heights. The object is dated 280,000-250,000 BP. Goren-Inbar reported several artificial grooves on the object: one is a transversal groove in the upper third, others are longitudinal grooves on the sides below the traversal groove. Alexander Marshack performed a microscopic study of the object in 1997. He also reported artificial modifications including the transversal and longitudinal grooves found by Goren-Inbar. Finally, Francesco d'Errico and April Nowell re-exa ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Venus Of Tan-Tan
The Venus of Tan-Tan (supposedly, 500,000-300,000 BP) is an alleged artifact found in Morocco. It and its contemporary, the Venus of Berekhat Ram, have been claimed as the earliest representations of the human form. Description The Venus of Tan-Tan was described by Robert G. Bednarik. The object is a 6 cm long, 2.6 cm wide, and 1.2 cm thick, 10 gram quartzite. It was discovered in 1999 during an archaeological survey by Lutz Fiedler, state archaeologist of Hesse, Germany, in a river terrace deposit on the north bank of the Draa River, near the bridge of the N1 national route over the Draa, about 10 km to the northeast of the Moroccan town of Tan-Tan. No dating of the artifact nor of the deposit as a whole has been performed. Both are attributed to the Middle Acheulean, which occurs between 500,000 and 300,000 BP in this region. The object, including its "arms" and "legs", was created by natural geological processes. The horizontal grooves on both sides of the object seem to ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Rock Formations
A rock formation is an isolated, scenic, or spectacular surface rock outcrop. Rock formations are usually the result of weathering and erosion sculpting the existing rock. The term ''rock formation'' can also refer to specific sedimentary strata or other rock unit in stratigraphic and petrologic studies. A rock structure can be created in any rock type or combination: * Igneous rocks are created when molten rock cools and solidifies, with or without crystallisation. They may be either plutonic bodies or volcanic extrusive. Again, erosive forces sculpt their current forms. * Metamorphic rocks are created by rocks that have been transformed into another kind of rock, usually by some combination of heat, pressure, and chemical alteration. * Sedimentary rocks are created by a variety of processes but usually involving deposition, grain by grain, layer by layer, in water or, in the case of terrestrial sediments, on land through the action of wind or sometimes moving ice. Ero ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Lithics
Lithic may refer to: *Relating to stone tools **Lithic analysis, the analysis of stone tools and other chipped stone artifacts **Lithic core, the part of a stone which has had flakes removed from it **Lithic flake, the portion of a rock removed to make a tool **Lithic reduction, the process of removing flakes from a stone to make a tool **Lithic technology, the array of techniques to produce tools from stone *Lithic fragment (geology), pieces of rock, eroded to sand size, and now sand grains in a sedimentary rock *Lithic sandstone, sandstone with a significant component of (above) lithic fragments *Lithic stage, the North American prehistoric period before 10,000 years ago See also *Stone Age **Paleolithic **Mesolithic **Neolithic *Stone carving Stone carving is an activity where pieces of rough natural stone are shaped by the controlled removal of stone. Owing to the permanence of the material, stone work has survived which was created during our prehistory or past time. Work ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Out-of-place Artifacts
An out-of-place artifact (OOPArt or oopart) is an artifact of historical, archaeological, or paleontological interest found in an unusual context, which challenges conventional historical chronology by its presence in that context. Such artifacts may appear too advanced for the technology known to have existed at the time, or may suggest human presence at a time before humans are known to have existed. Other examples may suggest contact between different cultures that is hard to account for with conventional historical understanding. This description of archaelogical objects is used in fringe science such as cryptozoology, as well as by proponents of ancient astronaut theories, young Earth creationists, and paranormal enthusiasts. It can describe a wide variety of items, from anomalies studied by mainstream science to pseudoarchaeology to objects that have been shown to be hoaxes or to have mundane explanations. Critics argue that most purported OOPArts which are not hoaxes ar ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
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