Geologic Unit: Hampden
Hampden Basalt of Newark Supergroup (MA*,CT*)
Forms the strong foothill ridge east of the Mount Tom Range, Hampden Co., MA (Emerson, 1898).
Unit Name History:
Named Hampden Diabase (Emerson, 1898). Revised to unit of Granby Tuff (Balk, 1957). Revised to Hampden lava member of Meriden formation (Rodgers, 1959). Revised to Hampden Basalt of Newark Group (Lehmann, 1959). Revised to Hampden Basalt of Meriden Group (Sanders, 1968). Age changed (Cornet and others, 1973). Revised to Hampden Basalt (Zen and others, 1983). Assigned to Newark Supergroup (Rodgers, 1985).
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Asterisks (*) indicate usage by the U.S. Geological Survey. Other usages by state geological surveys.
"No current usage" implies that a name has been abandoned or that it has fallen into disuse. Former usage and, if known, replacement name given in parentheses ().
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Last modified: 15-Jan-2013