A guide to continent-ocean transect E-1: Adirondacks to Georges Bank

GSA's DNAG Continent-Ocean Transect Series 17
By: , and 
Edited by: James B. Thompson Jr.Wallace A. BothnerPeter Robinson, and Kim D. Klitgord



The geologic strip-map for Transect E-l cuts a swath from the Thousand Islands region on the New York-Ontario border to the Atlantic Ocean floor off Georges Bank (see Fig. 1). It includes portions of New York, Ontario and of all of the New England states. The western part, mainly in New York, belongs to the North American craton. The remainder of the onland portion, east of Logan's Line, belongs to the Appalachian Orogen.

Southeastward from Logan's Line the transect crosses a series of distinctive terranes. Several of these terranes are believed to be exotic, and to have been accreted to the North American craton during the Paleozoic. Superposed on these are several grabens and half-grabens containing early Mesozoic sediments and mafic volcanics. There are also Mesozoic eruptive complexes of an alkalic nature cutting across the Appalachian Orogen from southern Quebec, across New England, and continuing as a chain of seamounts offshore. Cenozoic rocks are limited to a small, but significant occurrence near Brandon, Vermont (BL on Fig. 2) and a few occurrences in the Cape Cod region and on the adjacent islands in southeastern Massachusetts.

Additional publication details

Publication type Book chapter
Publication Subtype Book Chapter
Title A guide to continent-ocean transect E-1: Adirondacks to Georges Bank
Series title GSA's DNAG Continent-Ocean Transect Series
Series number 17
ISBN 9780813754369
DOI 10.1130/DNAG-COT-E-1.1
Volume 17
Year Published 1993
Language English
Publisher Geological Society of America
Contributing office(s) Woods Hole Coastal and Marine Science Center
Description 43 p.
Larger Work Type Book
Larger Work Subtype Monograph
Larger Work Title E-1 Adirondacks to Georges Bank (GSA's DNAG Continent-Ocean Transect Series, volume 17)
Country United States