Porphyritic obsidian from the Indian Rock source (AKA Unknown Variety A). The geologic location of this source,
one which was occasionally identified in geochemically characterized artifact collections from southcentral Washington
and northcentral Oregon, eluded archaeologists for many years. It was finally located by chance in 2004.
Washington Obsidian Sources
SOURCE NAME: Most commonly-used source name for the geochemical source
OTHER NAMES: Alternate names or names of source outcrops belonging to same geochemical source group
Click on active SOURCE NAME links below for additional available information
Click HERE for Washington obsidian reference list
|
| SOURCE NAME (CHEMICAL GROUP) |
OTHER NAME(S) |
| Agnes Creek A |
Agnes Creek |
| Agnes Creek B |
Agnes Creek |
| Bickleton Ridge |
-- |
| Chelan Butte |
-- |
| Cleman Mountain Tachylyte |
-- |
| Copper Ridge A |
Copper Ridge #1 |
| Copper Ridge B |
Copper Ridge #2 |
| Copper Ridge C |
Copper Ridge #3 |
| Copper Ridge D |
Copper Ridge #4 |
| Elk Pass |
-- |
| Hosko A |
Brooks Park
Brooks Memorial State Park |
| Hosko B |
Brooks Park
Brooks Memorial State Park |
| Indian Rock |
Unknown A
Unknown Variety A |
| Nasty Creek Tachylyte |
Rocky Coulee |
| Satus Creek |
-- |
| Stray Gulch Tachylyte |
-- |
| Toppenish Ridge |
-- |
| Yakima |
-- |
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Last Updated: 02/26/2008
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