Characterization ofNew England Chert Sources     by Neutron Activation                                  Matthew T. Boulang...
Champlain Valley Chert►   Often used by    archaeologists working    outside the state to    imply long-distance    trade ...
• Hathaway                  Geological                   Context                    Northern Valley             ►   Radiol...
Geological                      Context                Central & Southern Valley                ►   Upper Cambrian–Lower  ...
Champlain Valley                              Burlington►4   known quarries  Northern Valley      ►Brooks Farm      ►Lazy...
Neutron Activation Analysis► Sample  is crushed► Resulting fragments are selected► 2 analytical samples are:   Prepared  ...
Future Directions►   Refine & Expand Database     Additional samples from these      sources     Identify new quarries, ...
Characterization of New England Chert Sources by Neutron Activation
Characterization of New England Chert Sources by Neutron Activation
Characterization of New England Chert Sources by Neutron Activation
Characterization of New England Chert Sources by Neutron Activation
Characterization of New England Chert Sources by Neutron Activation
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Characterization of New England Chert Sources by Neutron Activation

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Invited presentation at the Winter Meeting of the American Nuclear Society. November 12-16, 2006. Albuquerque, New Mexico

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Characterization of New England Chert Sources by Neutron Activation

  1. 1. Characterization ofNew England Chert Sources by Neutron Activation Matthew T. Boulanger Robert J. Speakman Michael D. Glascock Archaeometry Laboratory, Missouri University Research Reactor
  2. 2. Champlain Valley Chert► Often used by archaeologists working outside the state to imply long-distance trade  Typically in Paleoindian contexts► Identified visually► Generally black, sometimes mottled
  3. 3. • Hathaway Geological Context Northern Valley ► Radiolarian chert within Mid–Upper Ordovician shale ► Hathaway formation ► Melange-type deposit ► Chert is black  Sometimes mottled grey- green
  4. 4. Geological Context Central & Southern Valley ► Upper Cambrian–Lower Ordovician dolomites ► Ticonderoga, Whitehall, and Cuttings (Great Meadows) formations ► Bedded chert within dolomite• Cuttings ► Chert is black• Whitehall  Sometimes mottled• Ticonderoga
  5. 5. Champlain Valley Burlington►4 known quarries  Northern Valley ►Brooks Farm ►Lazy Lady Island  Central Valley ►Thompsons Point Middlebury  Southern Valley ►Mount Independence
  6. 6. Neutron Activation Analysis► Sample is crushed► Resulting fragments are selected► 2 analytical samples are:  Prepared  Irradiated  Counted ► Immediately (8 short-lived elements) ► After 1 week (7 medium-lived elements) ► After 3 weeks (17 long-lived elements)► Statistical analyses of elemental data
  7. 7. Future Directions► Refine & Expand Database  Additional samples from these sources  Identify new quarries, and correct the existing site survey  Sources elsewhere in New England► Incorporate petrographic studies► Expand study to include artifact analysis► Develop & test hypotheses to move beyond gross generalizations

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