Lab Quiz 2 Flashcards
Why stone tools?
- Stone tools, and the debris from the process of their manufacture, are among the most frequently found artifacts in arky sites
- lithos artifacts provide info on tool making and activities closely related to the use of these tools
- stone tools have been around longer than modern humans, and are prevalent in arky assemblages around the world
What archaeologists can learn from stone tools:
- Technology: tools might preserve whole product they were used to make has vanished
- activities practiced within a culture: clustering of specific stone tools at specific locations suggest that certain activities were restrict d to defined areas
- function of a site: from activities determined
- settlement pattern of a human group: movement of tool types
- trade
- ideology/ religion
- maybe even the development of the human brain: with complexity and efficiency of tools
Classification
Lithos artifacts are classified into different types based on:
- Material
- Method of manufacture: chipped/ flaked, ground/pecked
- Form (shape, dimensions)
- Function (projectile point, Knife, scraper, Burin)
Materials with a fine grained texture are manufactured through a process of
Chipping or knapping because they will easy flake and crack (think of glass)
Materials with a coarse grain are manufactured through a process of
Abrading or grinding because the will not easily flake or crack
Manufacturing chipped stone
- a piece of hard stone is needed, known as a core
- flakes are removed by striking the edge of the core with a sharp, forceful blow. This is known as chipping or flaking. It requires the knowledge and ability..
- the core itself can become a tool or the flakes can become tools
Methods of flaking
- direct percussion
- indirect percussion
- pressure flaking
Direct percussion
- involves striking the core directly with another object. Can be with a hard (stone) or soft (antler) hammer
Indirect percussion
- involved the use of an object between the striking hammer stone and the rock being shaped
Pressure flaking
Used for the finishing stage of tool manufacture, or to reshape the tool when the edge gets broken or becomes dull
Stages of flake removal
- primary flakes
- secondary flakes
- tertiary flakes
Primary flakes
- flakes with cortex present on surface, but no flake scars
Secondary flakes
a flakes with diminishing traces of cortex. Have scars of previous flake removal
Tertiary flakes
No cortex present
Dorsal
Outer surface