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  • Home
  • People
    • Primary Investigators
    • Grad Students
  • Internships
    • About internship
    • Previous interns
  • Research
    • Publications
  • Resources
    • Ground Stone Use-Wear
    • News
  • Gallery
  • Contact Us

Basalt and Andesite

gO TO sANDSTONE

Natural Andesite Surface

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Natural andesite cobble, 20x
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Natural andesite cobble, 20x (Focus Stacked)
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Natural and Pecked Surfaces

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Natural andesite cobble, 20x
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Pecked surface of andesite cobble, 20x
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​Natural basalt cobble with patina, 20x
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Pecked surface of basalt handstone, unused, magnified 20x
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Pecked surface of basalt handstone, unused, magnified 40x

Basalt Handstone, Indian Ricegrass Seed (Achnatherum hymenoides)

Tool Material: Basalt, pecked surface
Processed Material: Indian Ricegrass Seed
Processing Motions: Primarily grinding, some crushing
Use time: 8 hours
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Basalt handstone use-surface, Indian ricegrass, 10x
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Basalt handstone use-surface, Indian ricegrass, 10x (focus stacked)
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Basalt handstone use-surface, Indian ricegrass, 20x
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Basalt handstone use-surface, Indian ricegrass, 20x (focus stacked)
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Basalt handstone use-surface, Indian ricegrass, 40x
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Basalt handstone use-surface, Indian ricegrass, 40x (focus stacked)

Basalt Handstone, Black Oak Acorn (Quercus kelloggii)

Tool Material: Basalt, pecked surface
Processed Material: Black Oak Acorn
Processing Motions: Crushing and grinding
Use time: 6 hours
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Basalt handstone use-surface, acorn, 10x 
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Basalt handstone use-surface, acorn, 10x (focus stacked)
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Basalt handstone use-surface, acorn, 20x 
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Basalt handstone use-surface, acorn, 20x (focus stacked)
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Basalt handstone use-surface, acorn, 40x 
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Basalt handstone use-surface, acorn, 40x (focus stacked)

Basalt Conical Pestle Use-Surface, Indian Ricegrass Seed ​(Achnatherum hymenoides)

Tool Material: Basalt
Processed Material: Indian Ricegrass Seed
Processing Motions:
Primarily grinding, some crushing
Use time: 8 hours
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Basalt conical pestle use-surface, Indian ricegrass, 10x ​
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Basalt conical pestle use-surface, Indian ricegrass, 10x (focus stacked)
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Basalt conical pestle use-surface, Indian ricegrass, 20x 
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Basalt conical pestle use-surface, Indian ricegrass, 20x (focus stacked)
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Basalt conical pestle use-surface, Indian ricegrass, 40x ​
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​Basalt conical pestle use-surface, Indian ricegrass, 40x (focus stacked)

Basalt Conical Pestle Use-Surface, Black Oak Acorn (​Quercus kelloggii)

Tool Material: Basalt
​Processed Material: Black Oak Acorn
Processing Motions: Primarily pounding, some grinding
Use time: 6 hours
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​Conical pestle use-surface, acorn processing, 10x
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Conical pestle use-surface, acorn processing, 10x (focus stacked)
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Conical pestle use-surface, acorn processing, 20x 
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Conical pestle use-surface, acorn processing, 20x (focus stacked)
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Conical pestle use-surface, acorn processing, 40x
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​Conical pestle use-surface, acorn processing, 40x (focus stacked)

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