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REP17182
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Last modified
8/24/2016 11:46:16 PM
Creation date
11/27/2007 2:03:57 AM
Metadata
Fields
Template:
DRMS Permit Index
Permit No
M1993041
IBM Index Class Name
Report
Doc Date
3/1/1994
Doc Name
PREHISTORIC HISTORIC & GEOLOGIC PROPERTIES PRESERVATION PLAN DOW FLAT BOULDER CNTY COLO
Media Type
D
Archive
No
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<br />1 <br />' Table 1 <br />Prehistoric Chronology Applicable to the Dowe Flats Study Area <br />1 <br />1 <br /> <br /> <br /> <br /> <br /> <br /> <br /> <br /> <br />1 <br />1 <br />1 <br /> <br /> <br />Years Before Cultural Period Environmental <br />Present Conditions <br />12,000 - 7,500 Paleo-Indian Generally <br /> cooler, savannah <br />7,500 - 5,000 Early Archaic Continental <br /> warming trend <br />5,000 - 3,000 Middle Archaic Cooler than <br /> previous episode <br />3,000 - 2,000 Late Archaic Moister; Triple <br /> Lakes glaciation <br /> on Front Range. <br />2,000 - 1,000 Early Ceramic Expansion of <br /> sage-grassland <br /> vegetation zone. <br />1,000 - 275 Middle Ceramic Auduobon Cirque <br /> glaciations on <br /> Front Range <br />275-150 Protohistoric/ Predominately <br /> Contact modern <br /> conditions. <br />27 <br /> <br />
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