The Nature of Triassic Continental Rift Structures in the Gulf of Maine.
WOODS HOLE OCEANOGRAPHIC INSTITUTION MASS
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An interpretation of seismic reflection profiles made across the Gulf of Maine and Georges Bank reveal the region underwent a major period of crustal rifting during the Triassic period. Three rift systems are delineated and a detailed comparison is made between the three systems and the Triassic Neward series onshore. A stress-strain analysis of the Triassic fault pattern in the Gulf of Maine is made and observed structures and related stress conditions are related to a sequence of six tectonic episodes beginning with initial graben formation in Late Triassic and ending with regional collapse and the onset of geosynclinal deposition in Middle Jurassic to Early Cretaceous.
- Geology, Geochemistry and Mineralogy