Eraillure

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In lithic analysis (a subdivision of archaeology), an eraillure is a flake removed from a lithic flake's bulb of force, which is a lump left on the ventral surface of a flake after it is detached from a core of tool stone during the process of lithic reduction.^[1] The mechanics of eraillure formation are related to the propagation of a Hertzian cone of force through the cryptocrystalline matrix of the stone, but the particulars are poorly understood. Eraillures usually form only when a hammerstone is used for lithic reduction, and then only occasionally; use of 'soft' hammer fabricators made from bone, antler, and wood produce different flake characteristics but may also produce an eraillure in rare cases.^{[citation needed]}

References

↑ Hiscock, Peter. (1997).Glossary of Terms used in "Lithic" Analysis." Australian National University. Retrieved 2011-12-14.

Prehistoric technology

Architectural

Ceremonial structures	Earliest religious structure Kiva Pyramid Temple

Dwellings	Neolithic architecture British megalith architecture Nordic megalith architecture Burdei Cave Cliff dwelling Dugout Great house Hut Jacal Lean-to Longhouse Neolithic long house Pit-house Pueblitos Pueblo Rock shelter Roundhouse Stilt house Tent

Water management	Check dam Cistern Reservoir Water well

Other	Archaeological features Burnt mound Causewayed enclosure Henge Mead hall Megalithic architectural elements Midden Timber trackway

Tools

Farming	Neolithic Revolution Ard / plough Celt Digging stick Domestication Goad Irrigation Sickle Terracing

Food processing	Fire Basket Granaries Grinding slab Ground stone Hearth Manos Metate Mortar and pestle Pottery Quern-stone Storage pit

Hunting	Arrow Atlatl Bow and arrow Dart Projectile point Snare trap Spear

Toolmaking	Earliest toolmaking Biface Cupstone Hafting Hand axe Lithic core Lithic reduction Prepared-core technique Striking platform Tool stone

Other tools	Adze Awl Axe Blade Bone tool Bow drill Burin Chopper Cleaver Denticulate tool Fire plough Fire-saw Hammerstone Hand axe Knife Quern-stone Rope Scraper Stone tool Weapons Wheel Ancient maritime history

Arts and culture

Material goods	Basket weaving Beadwork Chalcolithic Clothing Clothing and textiles Hides Pottery Weaving

Prehistoric art	Earliest art Cairn Cave painting Cup and ring mark Geoglyph Guardian stone Ideograms List of prehistoric artworks Megalithic art Petroform Petroglyph Petrosomatoglyph Pictogram Rock art Stone circle

Burial	Burial mounds Chamber tomb Cist Dolmen Great dolmen Jar burial Long barrow Passage grave Funeral pyre Megalithic tomb Mummy Rectangular dolmen Ring cairn Simple dolmen Stone box grave Tor cairn Tumulus Unchambered long barrow Unchambered long cairn

Other cultural	Behavioral modernity Evolutionary origin of religions Music archaeology Prehistoric music

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Eraillure

See also

References