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Topic: Lithic core


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In the News (Tue 5 Jun 12)

  
  Lithic core - Wikipedia, the free encyclopedia
In archaeology, a lithic core is a distinctive artifact that results from the practice of lithic reduction.
In this sense, a core is the scarred nucleus resulting from the detachment of one or more flakes from a lump of source material or tool stone, usually by using a hard hammer percussor such as a hammerstone.
The purpose of lithic reduction may be to rough out a blank for later refinement into a projectile point, knife, or other stone tool, or it may be performed in order to obtain sharp flakes, on which a variety of simple tools can be made.
en.wikipedia.org /wiki/Lithic_core   (243 words)

  
 Lithic reduction - Wikipedia, the free encyclopedia   (Site not responding. Last check: 2007-11-06)
Lithic reduction involves the use of a hard hammer percussor, such as a hammerstone, a soft hammer fabricator (made of wood, bone or antler), or a wood or antler punch to detach lithic flakes from a lump of tool stone called a lithic core.
Lithic reduction may be performed in order to obtain sharp flakes, on which a variety of tools can be made, or to rough out a blank for later refinement into a projectile point, knife, or other object.
The partial Hertzian cones produced during lithic reduction are called flakes, and exhibit features characteristic of this sort of breakage, including striking platforms, bulbs of force, and occasionally eraillures, which are small secondary flakes detached from the flake's bulb of force.
en.wikipedia.org /wiki/Lithic_reduction   (341 words)

  
 CORES
A core is a "Block of raw material from which flakes, blades or bladelets are detached " (Tixier 1974, 14).
Cores can be embryonic, such as a piece of natural unprepared raw material with scar, or scars, reflecting the detachment of one or more flakes" (Crabtree 1982.
Frequently, preparation flakes are removed from the platform to adjust the angle of detachment (Coulson 1986, 21).Although this core type is considered to be primarily for the manufacture of blades, numbers of flakes are also produced during the core preparation and correction stages.
www.hf.uio.no /iakk/roger/lithic/cores.html   (896 words)

  
 Core   (Site not responding. Last check: 2007-11-06)
In astrophysics and geology, a planetary core is the composite material at the centre of a planet.
In economics, the core is a feasible allocation in an economy that cannot be improved upon by any coalition of consumers.
In mathematics, the core of a group is an object appearing in group theory.
www.worldhistory.com /wiki/C/Core.htm   (530 words)

  
 Veldwezelt-Hezerwater
Most of the cores excavated at Veldwezelt-Hezerwater are relatively small and it is difficult to escape the impression that the cores were discarded at or near the end of their use lives.
The lithic assemblages of the VLL and VLB Loci (n = 795 & 687 artefacts respectively) are situated on the slopes of this side-valley.
The lithic assemblage (n = 75) is primarily characterised by the dominance of centripetal core reduction.
www.geocities.com /veldwezelt2003/lithic_variability.html   (4637 words)

  
 Stone tool   (Site not responding. Last check: 2007-11-06)
One simple form of reduction is to strike stone flakess from a nucleus (core) of material using a hammerstone or similar hard hammer fabricator.
If the goal of the reduction strategy is to produce flakes, the remnant lithic core may be discarded once it has become too small to use.
In some strategies, however, a flintknapper reduces the core to a rough unifacial or bifacial preform, which is further reduced using soft hammer flaking techniques or by pressure flaking the edges.
hallencyclopedia.com /Stone_tool   (768 words)

  
 lithic
Lithic, or chipped stone, tools can be made only from a few specific types of rock, all of which are composed largely of silica (SiO2).
Note that with any technique, because the interior surface of the flake and the corresponding surface of the core or unfinished tool were created by a single fracture, all of the characteristics of flakes also appear in an exact negative impression on the core or unfinished tool.
Many lithic tools are produced by a combination of all three techniques, with hard hammer percussion followed by soft hammer percussion and then finished by pressure flaking.
www.utexas.edu /courses/denbow/labs/lithic2.htm   (1036 words)

  
 What is Lithic Analysis?
Cores are a class of lithic artifacts serving as parent material for the production of flakes and are classified based on core configuration.
Core tools are a unique class of lithic tool made on cores instead of flakes and are classified by core type, use wear type, and use wear location.
Angular hammers are often made from exhausted cores or core scrapers; however, because their last use was as a percussive tool, they are classified under a battered tool class.
www.sjc.cc.nm.us /arch/anlaysis.html   (1626 words)

  
 Middle Paleolithic Tool Technologies
The important difference in the Middle Paleolithic is that cores were being carefully shaped to produce flakes of a predetermined size and shape.
The Levallois technique of core preparation and flake removal is the earliest of the core preparation technologies.
Second, the upper surface of the core is trimmed to remove cortex and to produce a ridge running the length of the core, Third, a platform preparation flake is removed from one end of the core to produce an even, flat striking platform for the blow that will detach the flake.
id-archserve.ucsb.edu /Anth3/Courseware/LithicTech/8_Middle_Paleolithic_Tool.html   (658 words)

  
 [No title]
The lower 1.0' of the bench was dull clarain, somewhat intact in the core.
Core was very fractured and wet and shortened somewhat, therefore the description is poor." 119.60 119.81 0.21 "Shale, silty, fl, highly carbonaceous, mottled fl and dark gray silty shale with very disrupted and contorted bedding and occasional inter-fingering 1-10 mm layers of gray siltstone.
The vitrain fragments were small, angular, contorted and fragmental, much smaller than in the bands a" 227.32 227.40 0.08 "Coal, clarain, dull with thick vitrains (one 6mm thick).
pubs.usgs.gov /of/2002/of02-489/USGS2/GeolLog.txt   (406 words)

  
 Encyclopedia: Stone age   (Site not responding. Last check: 2007-11-06)
Due to the prevalence of stone artefacts, which are frequently the only remains which still exist, lithic analysis is a major, and specialised, form of archaeological investigation for the period.
This frequently involves an analysis of the lithic reduction of the raw materials, examining how the artefacts were actually made.
In archaeology, a lithic flake is a thin, sharp fragment of stone that results from the process of lithic reduction.
www.nationmaster.com /encyclopedia/Stone-age   (9149 words)

  
 Body
The lithic assemblages, which compose the bulk of the artifacts recovered from these sites, represent bladelet technologies, with backed bladelets as the main components, numerous notches and denticulates, and a few geometric microliths.
Lithic artifacts (stone tools) are the only artifact category that appear in both Epipaleolithic and Neolithic sites, and therefore are central to resolving this question.
Recent research on lithic artifact variability has indicated that tool form is controlled by a number of factors including the quality and availability of raw materials (Bamforth 1986; Beck and Jones 1990) and the settlement/subsistence patterns and social structure of the people utilizing them (Teltser 1988; Wiant and Hassen 1984).
www.acagle.net /fayum94/narce.html   (3873 words)

  
 Flake Morphology
The cortex of a core or flake is the weathered, outer surface of the rock.
The striking platform is the prepared surface on both the flake and the core where the blow that detached the flake was struck.
For example, on this flake and core, the striking platform has only one surface, and is quite wide, indicating that the flintknapper wanted to detach a large, thick flake.
www.anth.ucsb.edu /faculty/stsmith/classes/anth3/courseware/LithicTech/4_Flake_Morphology.html   (597 words)

  
 Mesa vs Folsom Lithic Technologies
In the core model, the possibility that a biface may ultimately be reduced to a finished biface or projectile point is not important to the knapper.
With the core model, there existed a point in the reduction of a biface when the Mesa knapper decided the desired flake was easier to extract from a new lithic package.
If the core model is correct, then one would expect Folsom to have utilized biface cores to transport their exotic material across a lithic-poor landscape.
www.ele.net /mesa_folsom/mesa_fol.htm   (4213 words)

  
 Articles - Core   (Site not responding. Last check: 2007-11-06)
Core memory or storage is memory made of magnetic toruses.
A core dump is a record of the contents of primary storage.
In Dependency Theory Core countries are in contrast to the periphery.
www.lastring.com /articles/Core   (553 words)

  
 Stone tool
The study of stone tools is called lithics or lithic analysis.
Chipped stone tools are made from cryptocrystalline materials such as chert and obsidian via a process known as lithic reduction, whereby stone flake s are struck from a nucleus of tool stone using a hammerstone or similar hard hammer fabricator.
Often, however, a flintknapper reduces the core to a rough unifacial or bifacial preform, which is further reduced using soft hammer flaking techniques or by pressure flaking the edges.
www.nebulasearch.com /encyclopedia/article/Stone_tool.html   (856 words)

  
 SYLLABUS FOR LITHIC ANALYSIS
Lithic variability and Middle Paleolithic behavior: new evidence from the Iberian Penninsula.
Examining lithic technological organization as a dynamic cultural subsystem: the advantages of an explicitly spatial approach.
a) Save all lithic debitage from third day of knapping, noting at what point in the reduction process each piece was produced (you might separate the debitage into stages as you knapp).
www.public.asu.edu /~cmbarton/Lithic_Analysis.htm   (2835 words)

  
 Lithic Technology
This technique entails using the core as a hammer, and striking the edge of the core against a large, stationary rock (the anvil) in order to remove a flake.
The compression from both ends of the core cause it to shatter into hundreds of flakes, some of which will be large enough, and of the right shape for use as tools.
Striking the core with the baton initiates a fracture according to the cone principle, but the soft hammer material tends to catch the edge of the flake, allowing the experienced flintknapper to actually help pull the flake off of the core.
www.mc.maricopa.edu /~reffland/anthropology/anthro2003/archy/lithictech/lithictech2.html   (1197 words)

  
 wikien.info: Main_Page   (Site not responding. Last check: 2007-11-06)
In an Amway or Quixtar Motivational Organization, Core steps refer to the eight or nine tasks for success.
CORE is an acronym for the Congress of Racial Equality, a civil rights organization.
Core training is when you focus your training to your abdominal and back muscles.
www.hostingciamca.com /index.php?title=Core   (383 words)

  
 Petrophysics Vol 2 No 5 (Sep-Oct)
Key to the understanding of fluid flow within a hydrocarbon reservoir is the acquisition of core, and the measurements of core porosity and permeability.
Therefore, in regions where coring is not viable a local pre-established permeability-porosity relationship may be used for the prediction of permeability from wireline-derived porosity.
Lithic sandstone modes are modified by the presence of shale intraclasts, occurring as pebbles, easily recognized in core, but also as sand-size intraclasts that form part of the detrital grain framework.
www.spwla.org /library_info/abstract/tla/2001/2001TLASO.html   (511 words)

  
 lt.html
Andrefsky Jr., W. 1987 Diffusion and innovation from the perspective of wedge shaped cores in Alaska and Japan.
Hassan, F. 1988 Prolegomena to a grammatical theory of lithic artifacts.
Lithic resource procurement: proceedings from the second Conference on Prehistoric Chert Exploitation, edited by S.C. Vehik.
www.public.asu.edu /~cmbarton/lithic_theory.htm   (1938 words)

  
 East Lydick Creek - Lithic Artifacts   (Site not responding. Last check: 2007-11-06)
Area A lithics clustered between 15 and 45 cm; Area B lithics were so sparse it is hard to notice any particular distribution but they fell entirely between 10 and 70 cm.
When the lithic assemblage is broken down by area and vertical provenience, however (as shown in Figure 10), the distributions of these materials show a certain amount of patterning that may reflect discrete occupation episodes.
One unusual aspect of the lithic assemblage at East Lydick Creek is the appearance of a rather large proportion of Hudson Bay Lowland Chert.
www1.minn.net /~pemerson/annex/lydick4.htm   (1669 words)

  
 Internet Archaeol 4. Reviews. Pettitt
It is quite ironic that, as an archaeologist concerned with ancient (lithic) technology, I should be so ignorant about recent advances in modern technology, particularly in the field of information technology which is having such a profound effect on the nature of academic disciplines.
One might expect such phenomena in situations where materials are unavailable locally or where access is difficult, but their position here, that is, actually on top of a lithic autobank, where one might expect a more profligate use, is very surprising, and would seem to contradict Dibble's model.
A final slideshow is perhaps the most useful of all: a selection of five categories of artefacts (Levallois flakes, scrapers, notched tools, cores and a general category for tools of much lesser frequency) in a total of 126 images.
intarch.ac.uk /journal/issue4/reviews/pettitt.html   (2358 words)

  
 East Lydick Creek - Site Interpretation   (Site not responding. Last check: 2007-11-06)
The same ware was present in Core Areas C-West and C-East, suggesting that the upper part of the deposit in Area B is related to the same occupation that created the archaeological deposits in those areas.
The original distinction that led to the definition of east and west units within the Core Area was an observed lack of ceramics in the eastern half of the area.
All of the diagnostic ceramics from this Core Area are similar to "Bird Lake CWOI and Stamp" as defined for northwestern Ontario; if this perceived similarity is accurate, it indicates a Late Terminal Woodland age for the upper part of the deposit.
www1.minn.net /~pemerson/annex/lydick7.htm   (4280 words)

  
 TeltserP_18_3   (Site not responding. Last check: 2007-11-06)
Generalized core technologies are commonly regarded as relatively unstructured chipped-stone technologies, lacking a standardized set of products; flakes display no consistent set of formal or technological attributes and cores are described as amorphous.
Cores are reduced in a relatively unsystematic manner and flakes are then used, usually without any modification.
The second issue concerns patterns of tool use in generalized core technologies in light of recently developed arguments regarding the procurement, manufacture, and use of lithic materials and the way in which these factors are constrained by the nature of human settlement systems and the distribution of lithic materials across the landscape.
www.bu.edu /jfa/Abstracts/T/TeltserP_18_3.html   (179 words)

  
 [No title]   (Site not responding. Last check: 2007-11-06)
LITHIC CORE density (n/m^3) per excavation unit, within the plankhouse, arranged on the N-S gradient.
LITHIC CORE density (n/m^3) per HOUSE ZONE (North, Central, South).
LITHIC CORE density (n/m^3) per gross analytical unit (House, Midden, Exterior).
www.sfu.ca /~csmith/genstuff/academic/meier/august99.html   (480 words)

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