The Web Pages of

Bieling & Psota

Archaeological Consultants

Based in Sonoma County, California

These Pages Last Updated 22 February 2009

For summaries of recent archaeological studies conducted, visit the following page:

Archaeological Consulting

Archaeological Studies page

The Obsidian Hydration process
These pages provide information about the use of obsidian hydration. The technique of specimen preparation and measurement is described on the first page. Links to other pages show results of various studies and summaries of hydration results.

A Page of Connections

A Sliver of Marble

More about Marble


 Links to other relevant Web Sites:


We are certified in Field Research by the former Society of Professional Archaeologists and meet the professional qualifications standards established by the Secretary of the Interior for Prehistoric Archaeologist with over twenty-seven years experience in the region.

Our professional interests include prehistoric Western North America, cultural resources management, California & Western Nevada obsidian studies, technological organization of flaked stone, historic textiles, fasteners, and ornaments.

For further information, email us at: and

David G. Bieling & Sunshine Psota

Space for this page and linked pages provided by