Eraillure

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.

References

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

Prehistoric technology

Tools

Farming

Food processing

Hunting

Arrow Boomerang throwing stick Bow and arrow history Nets Spear Spear-thrower baton harpoon woomera Schöningen Spears

Projectile points	Arrowhead Bare Island Cascade Clovis Cresswell Cumberland Eden Folsom Lamoka Manis Site Plano Transverse arrowhead

Toolmaking

Other tools

Architecture

Ceremonial	Göbekli Tepe Kiva Standing stones megalith row Stonehenge Pyramid

Dwellings	Neolithic architecture British megalith architecture Nordic megalith architecture Burdei Cave Cliff dwelling Dugout Hut Quiggly hole Jacal Longhouse Mud brick Mehrgarh Neolithic long house Pit-house Pueblitos Pueblo Rock shelter Blombos Cave Abri de la Madeleine Sibudu Cave Stone roof Roundhouse Stilt house Alp pile dwellings Wattle and daub

Water management	Check dam Cistern Flush toilet Reservoir Water well

Other architecture	Archaeological features Broch Burnt mound fulacht fiadh Causewayed enclosure Tor enclosure Circular enclosure Goseck Cursus Henge Thornborough Oldest buildings Megalithic architectural elements Midden Timber circle Timber trackway Sweet Track

Arts and culture

Material goods	Baskets Beadwork Beds Chalcolithic Clothing/textiles timeline Cosmetics Glue Hides shoes Ötzi Jewelry amber use Mirrors Pottery Cardium Grooved ware Linear Jōmon Unstan ware Sewing needle Weaving Wine Winery wine press

Prehistoric art	Art of the Upper Paleolithic Art of the Middle Paleolithic Blombos Cave List of Stone Age art Bird stone Bradshaw rock paintings Cairn Carved Stone Balls Cave paintings painting pigment Cup and ring mark Geoglyph Golden hats Guardian stones Megalithic art Petroform Petroglyph Petrosomatoglyph Pictogram Rock art Stone carving Sculpture Statue menhir Stone circle list British Isles and Brittany Venus figurines

Burial	Burial mounds Bowl barrow Round barrow Mound Builders culture U.S. sites Chamber tomb Severn-Cotswold Cist Dartmoor kistvaens Clava cairn Court tomb Cremation Dolmen Great dolmen Funeral pyre Gallery grave transepted wedge-shaped Grave goods Jar burial Long barrow unchambered Grønsalen Megalithic tomb Mummy Passage grave Rectangular dolmen Ring cairn Simple dolmen Stone box grave Tor cairn Tumulus Unchambered long cairn

Other cultural	Astronomy sites lunar calendar Behavioral modernity Origin of language Prehistoric medicine trepanning Evolutionary musicology music archaeology Prehistoric music Alligator drum flutes Divje Babe flute gudi Prehistoric numerals Origin of religion Paleolithic religion Prehistoric religion Spiritual drug use Prehistoric warfare Symbols symbolism

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Eraillure

See also

References