Title: Petrology and tectonic significance of Mesozoic mafic dikes of the coastal New England igneous province, Massachusetts
Abstract: The northeast-trending composite swarm of Mesozoic mafic dikes in eastern Massachusetts consists of tholeiitic olivine dolerites, transitional-alkalic dolerites, alkaline dolerites, and alkaline lamprophyres. Chemical subtypes thus far identified among the dolerites include dikes relatively high (>9.00 wt%) or low in MgO as well as dikes having relatively low TiO2(<3.00 wt%) and low P2O5 (<1.00 wt%) contents. The low-MgO dolerites also include high-TiO2 and high-P2O5 varieties.
Publication Year: 1992
Publication Date: 1992-01-01
Language: en
Type: book-chapter
Indexed In: ['crossref']
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Cited By Count: 7
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