Lithotectonic assemblages as portrayed on the new bedrock geologic map of Massachusetts.
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Abstract
Scale of 1:250,000. The map units are grouped into eight lithotectonic packages. Five "zones" of older rocks that cover the whole state are, from west to east, the Taconic-Berkshire, Rowe-Hawley, Bronson Hill, Nashoba, and Milford-Dedham. In central and western Massachusetts, these zones are overlain by the Connecticut Valley and Merrimack "belts" of Silurian-Devonian, and local Carboniferous, strata; the two belts are distinguished from each other on the basis of the lithofacies of the Silurian strata. In eastern Massachusetts, the Milford-Dedham Zone also includes Silurian-Devonian, Carboniferous, Mesozoic, and Tertiary strata. A Mesozoic "basin" is separately identified in the Connecticut Valley region
Study Area
Publication type | Article |
---|---|
Publication Subtype | Journal Article |
Title | Lithotectonic assemblages as portrayed on the new bedrock geologic map of Massachusetts. |
Series title | American Journal of Science |
DOI | 10.2475/ajs.284.9.1026 |
Volume | 284 |
Issue | 9 |
Year Published | 1984 |
Language | English |
Publisher | American Journal of Science |
Description | 9 p. |
First page | 1026 |
Last page | 1034 |
Country | United States |
State | Massachusetts |
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