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Stone Tools and Archaeology. Common throughout prehistoryOnly durable tool until metallurgy (over 2 million years)Reductive technology: manufactured by removing material from core (creates substantial residue: debitage)Inorganic: do not decaySame basic process for manufacture used across all of prehistoryPercussion (grinding
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1. Typology I Lithics: Stone Tools
3. Stone Tools: Raw Materials Needs specific types of stone
Non-crystalline; homogenous; Cryptocrystalline
Conchoidal fracture
Molecular edge
Ideal: natural glass (obsidian)
Chert/flint; quartzite; basalt; quartz
4. Conchoidal Fracture
5. Raw Materials
6. Stone Tools vs. Metal Stone: Sharper (up to 1000x); ubiquitous raw materials
Brittle; high breakage rate
Metal: Durable; more flexible
Require complex technology (smelting, alloying (natural cold hammering inferior to stone tools)
7. Stone Tool Manufacture Percussion:
using hard or soft hammer to remove flakes from core
Subsequent hammering to shape flake or core to desired shape
Pressure flaking for final shaping and sharpening
Flintknapping
8. Debitage Waste flakes left over from tool manufacture
Most common artifact throughout most of prehistory
Analysis:
Reconstruct production sequence
Utilization (retouch, polish)
9. Flake Morphology
10. Debitage
11. Projectile Points Projectile Point, not just Arrow Heads
Knives, spears, darts, Drills also
Most common type of formal stone tool
Formal: defined shape, extensive shaping, curated
Informal: expedient tools; disposable (flake, utilized debitage)
Change over time; size, shape, hafting
Correlating point changes with stratigraphy or absolute dates: seriation; point chronology
12. Stone Tool Typology Typology: formation and analysis of groups of similar artifacts (types)
Can be used spatially (to distinguish between different archaeological cultures)
Can be used temporally (to interpret changes in tools over time)
Seriation
13. Projectile Point
14. Typology Example (1)
15. Typology Example (2)
16. Typology Example (3)
17. Typology II Pottery and Ceramics
18. Ceramics and Archaeologists Comparatively recent development
Clay figurines (Europe) 30,000 BP
True pottery: 10,000 BP (Japan); 8,500 BP (Anatolia); 7,000 BP (Iran); 4,800 BP (China); AD 500 (Mexico)
Relationship to agriculture?
Additive technology (less residue)
Fragile but durable
Plastic medium: lots of possible variation
Pottery vs. Ceramic
19. Impact of Pottery container revolution
Widespread durable vessel form
New cooking techniques
Storage
New medium for expression and symbolism
First durable plastic medium
20. Basic Nomenclature Jar vs. Bowl
narrow vs. wide opening; storage vs. consumption
Sherd: fragment
Body vs. Base vs. Rim
Rim: most useful for typology
Glaze, Slip
Decorations
Painting, appliqu, incising, cord impressions
21. Pottery Manufacture Clay + Temper
Clay: provides strength (<0.002 mm)
Temper: flexibility; prevents breakage during firing
Grit, Grog, Shell, Straw, Sand, etc.
Firing: causes clay particles to sinter (adhere to each other)
Properties related to size of clay and temperature of firing
<1000 C = Terra Cotta
900-1200 C = Earthenware
1200-1350 C = Stoneware
1350 C + = Porcelain
22. Manufacture Techniques Vessel formation
Pinching
Coiling
Slab Form
Wheel Thrown
Surface modification (Incising, Punctates, etc.)
Drying
Surface Treatment (slip, glaze, paint)
Firing (open fire, covered fire, kiln)
23. Pottery Examples
24. What can Pottery Tell Us? Chronology
Type seriations (same as for stone tools)
Technology
Crude, coarse earthenwares vs. High-fired Porcelain
Craft Specialization
25. What can Pottery Tell Us? Trade/Social Interaction
Pottery types regionally specific
Example:
Pennsylvania types (Shenks Ferry) occur in Southern New York (AD 1000-1300) along with New York types (Owasco)
Wife Stealing Hypothesis (Marital Exogamy)
Assumption of female potters supported by ethnohistoric sources
Open question: hostile abduction or willing exchange between neighboring populations
26. Pennsylvania vs. New York Pottery Types
27. What can Pottery Tell Us? Iconography (Ideology)
Effigies (human, zoomorphic), Painted images
Examples:
Valdiva Phase pottery (South America); entoptic imagery related to hallucinogenic visions
28. What can Pottery Tell Us? Subsistence (food production and consumption)
Analogy: certain types of vessels historically used for certain foods; may have been the same in prehistory?
Residue Analysis (Lipids, Alkaloids)
GC/MS + related chromatographic techniques
Phytolith analysis
Raman microscopy
Alkaloids: medicinal/psychoactive
Nicotine, Morphine, Caffeine, etc.
29. Non-Vessel Pottery Plasticity and Flexibility of pottery amenable to a variety of functions
Artistic (figurines, etc.)
Industrial (Spindle Whorls, etc.)
Mortuary (e.g., Terra Cotta Sarcophagi)
Smoking: pottery smoking pipes vs. stone smoking pipes
North American Example: did the shift to pottery smoking pipes after 500 AD lead to a secularization of tobacco smoking, as opposed to its initial sacred context?
30. Stone vs. Ceramic Pipes