Acadian synorogenic mafic intrusions in the Maine Appalachians

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ID: 303212
1984
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Abstract
Two belts of syn-Acadian mafic intrusions. The Central Maine Belt is progressively more altered and metamorphosed toward the southwest. At the northeast end, the Moxie Pluton represents the least altered and most important example in the belt. Forsterite contents of the most primitive olivines are consistent with the derivation of the earliest magma from a largely unfractionated mantle melt. The Coastal Maine Belt is spatially associated with the Siluro-Devonian coastal volcanics. The age difference, however, between the volcanics and plutonics suggests that they may not be directly related. The important Pocomoonshine Gabbro appears to represent the well layered roof zone of a major fractionated body. Mineral compositions are similar to those in the Moxie Pluton and suggest a similar primary magma. Intrusions in both belts have complex contacts, pronounced contact aureoles, and were all deformed by late Acadian deformation.--Modified journal abstract.
Reference Key
openalex_W2319628088 Use this key to autocite in the manuscript while using SciMatic Manuscript Manager or Thesis Manager
Authors John F. Thompson
Journal american journal of science
Year 1984
DOI
10.2475/ajs.284.4-5.462
URL
https://doi.org/10.2475/ajs.284.4-5.462
Keywords Keywords not found

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