Fractures In Knapping

Author: Are Tsirk
ISBN: 9781784910228
Size: 30.50 MB
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This book is for students and practitioners of not only knapping, lithic technology and archaeology, but also of fractography and fracture mechanics.

Fractography Of Glasses And Ceramics Vi

Author: James R. Varner
Publisher: John Wiley & Sons
ISBN: 1118432983
Size: 57.34 MB
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Consultant Upper Montclair, NJ, USA ABSTRACT Knapping entails the
production of fractures by flaking. The crack propagation is almost always
subcritical.* The great variety of fractures in knapping is not encountered in
laboratory research nor in industrial applications. Brief references are made to a
number of fracture markings and other fracture features observed, along with
suggested explanations for their ...

Crafting History In The Northern Plains

Author: Mark D. Mitchell
Publisher: University of Arizona Press
ISBN: 0816599831
Size: 25.23 MB
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Limited knowledge of fracture mechanics Numerous knapping errors, including
stacked step fractures, hinge fractures, poor platform placement, and multiple
hammer strikes. Tool is usually unintentionally asymmetrical, in both plan and
cross section. Moderate knapping ability Some knapping errors, such as step
fractures or poor platform placement. Poorly sequenced flake removals. Errors
likely limited the recyclability or use life of the tool, but not its initial function. Some
tools in this ...

Prehension And Hafting Traces On Flint Tools

Author: Veerle Rots
Publisher: Universitaire Pers Leuven
ISBN: 9058678016
Size: 61.55 MB
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All fracture causes are examined, including those resulting from knapping,
retouch and transport. Intentional fractures are not included as these
systematically proved to show a clear bulb (Geerts 1999). Four fracture locations
are considered: proximal extremity, proximal (e.g., in the haft), medial (e.g., at the
haft limit), distal extremity (generally a partial fracture, i.e. intense scarring). For
each of these locations, it is examined whether hafting fractures have differing
attributes 39 Even ...

Archaeological Concepts Techniques And Terminology For American Prehistoric Lithic Technology

Author: Wm Jack Hranicky
Publisher: AuthorHouse
ISBN: 1481751743
Size: 41.10 MB
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Flaking (Fracture or Failure Errors) - the following are common knapping
mistakes: 1) This variable is strongly correlated with Manufacturing Condition
above since most of the evidence for abandonment during manufacture derives
from the nature of fractures and failures (referred to as Breakage Patterns and
Knapping Errors in Collins, et al. 1979). 2) Hinge fracture exhibits a flake scar or
scars with abruptly upward curving termination (Johnson 1981). Step fractures, a
subset with ...

Lithic Technology

Author: Earl Herbert Swanson
Publisher: Walter de Gruyter
ISBN: 3111390373
Size: 71.55 MB
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Many illustrations of knapping show angles of impact which any knapper knows
to be impossible (e.g. Bordaz 1970: Figures 4 and 8; Semenov 1964: Figure 4,
Number 2; Figure 5, Number 2; Figure 15, Number 4) or interpretations of the
formation of use wear on an edge in ways that contradict all of the physical laws
of the fracture of lithic materials. I don't know how many knappers share with me
the experience of having done an analysis of a lithic collection before learning to
knap ...

Lithics In The Land Of The Lightning Brothers

Author: Chris Clarkson
Publisher: ANU E Press
ISBN: 1921313293
Size: 45.46 MB
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... the various procedures and strategies knappers employed to gain control over
the material being worked and determine their frequency in archaeological
assemblages. From this we may determine their significance in relation to other
features of the assemblage (such as the geographic location of the assemblage
relative to the occurrence of raw materials, the type and quality of raw materials,
etc.). By briefly reviewing the methods of stone fracture and its many intertwined
variables ...

High Resolution Archaeology And Neanderthal Behavior

Author: Eudald Carbonell i Roura
Publisher: Springer Science & Business Media
ISBN: 9400739222
Size: 74.38 MB
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Interpretation of Main Uses of Cobbles Based on the primary morphological and
weight groups and their wear traces or fractures, knapping activities can be
attributed to objects weighing less than 600 g. Those weighing between 40 and
195 g would rarely have been used for activities other than knapping (except nut-
cracking, maybe). The smallest objects, always on category-5 polyhedral forms
can be more precisely linked to retouch or perhaps more commonly to small core

The Emergence Of Pressure Blade Making

Author: Pierre M. Desrosiers
Publisher: Springer Science & Business Media
ISBN: 1461420032
Size: 67.88 MB
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Trapeze styles could also be influenced by the removal sequence: a marked
transversal curve of the knapping production surface results in greater elongation
of the blades as well as a higher relative thickness, the latter facilitating
microburin fractures. Knapping blades produced by small series of four to six
items, produce include a high ratio (1/2–1/3) of lateral blades versus central ones
. As the 'best' central products are selected for making microliths, the visibility of
pressure is less if ...

Multidisciplinary Approaches To The Study Of Stone Age Weaponry

Author: Radu Iovita
Publisher: Springer
ISBN: 9401776024
Size: 73.43 MB
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This makes the assessment of frequencies of impact fractures in the Maisières-
Canal collection difficult, but there are still some clues that suggest that a
projectile function for at least some of the tanged tools is possible. One line of
evidence is the percentage of the tanged tools (9%) with multiple impact fractures
, a percentage that is significantly higher than those produced in knapping
experiments (0.6%) but still lower than those from hunting experiments (30%) (
Pargeter 2013).