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Posts on ‘March 20th, 2017’

Pottery Times

The period names in classifying pottery have very little to do with the pottery itself. Instead the names refer to cultural changes based on migration and developments in agricultural techniques and architecture. Basketmaker II          50 B.C.-A.D. 450 Baskemaker III           A.D. 450-700 Pueblo I       […]

The wild world of sand dunes

The San Luis Valley’s Great Sand Dunes is one of the more unusual landscapes in the United States. In fact, so unusual that it’s protected by the National Park Service. But how unique are these dunes? Geologist Andrew Valdez will describe how Great Sand Dunes formed and then compare them to other dunes in the […] is powered by WordPress µ | Spam prevention powered by Akismet