Extensional processes in continental lithosphere

C Ruppel - Journal of Geophysical Research: Solid Earth, 1995 - Wiley Online Library
Since Vening‐Meinesz's realization that the East African Rift represented an extensional, not
compressional, feature and since the widespread acceptance of plate tectonics two decades …

[PDF][PDF] A late Neoproterozoic eastern Laurentian superplume: Location, size, chemical composition, and environmental impact

JH Puffer - American Journal of Science, 2002 - ajsonline.org
A database consisting of 25 data-sets has been compiled that includes published chemical
analyses of most known eastern North American occurrences of late Neoproterozoic …

Geochemistry of mafic dikes in the Adirondack mountains: implications for late Proterozoic continental rifting

RA Coish, CW Sinton - Contributions to Mineralogy and Petrology, 1992 - Springer
Mafic dikes of late Proterozoic age which cut Grenvillian crust in the northeastern
Adirondack Mountains are mostly mildly alkaline basalts except for a few tholeiitic examples …

[PDF][PDF] U-Pb zircon age of metafelsite from the Pinney Hollow Formation; implications for the development of the Vermont Appalachians

GJ Walsh, JN Aleinikoff - American Journal of Science, 1999 - ajsonline.org
The Pinney Hollow Formation of central Vermont is part of a rift-clastic to drift-stage
sequence of cover rocks deposited on the Laurentian margin during the development of the …

A model for Iapetan rifting of Laurentia based on Neoproterozoic dikes and related rocks

WC Burton, S Southworth, RP Tollo… - From Rodinia to …, 2010 - books.google.com
Geologic evidence of the Neoproterozoic rifting of Laurentia during breakup of Rodinia is
recorded in basement massifs of the cratonic margin by dike swarms, volcanic and plutonic …

The Caldwell Group lavas of southern Quebec: MORB-like tholeiites associated with the opening of Iapetus Ocean

JH Bédard, R Stevenson - Canadian Journal of Earth Sciences, 1999 - cdnsciencepub.com
The Caldwell Group belongs to the Internal Nappe Domain of the Humber Zone and
consists of basaltic lavas, quartzo-feldspathic sandstones, and mudslates. The lavas are …

[PDF][PDF] Mafic whole-rock geochemistry and neodymium isotopes, Green Mountain and Rowe/Prospect Rock slices, Vermont Appalachians

IW Honsberger, RA Coish, J Laird… - American Journal of …, 2019 - ajsonline.org
Mafic rocks containing sodic-calcic amphibole in the Green Mountain slice (GMS) and
Rowe/Prospect Rock slice (R/PRS), Vermont Appalachians were originally subalkaline …

Late stage rifting of the Laurentian continent: evidence from the geochemistry of greenstone and amphibolite in the central Vermont Appalachians

R Coish, J Kim, N Morris… - Canadian Journal of Earth …, 2012 - cdnsciencepub.com
Metamorphosed mafic rocks from west-central Vermont crop out in tectonic slices of the
Stowe Formation within the Rowe–Hawley Belt of New England. The rocks include …

Magmatism in the Vermont Appalachians

RA Coish - From Rodinia to Pangea: The Lithotectonic Record of …, 2010 - books.google.com
ABSTRACT The Vermont Appalachians expose metamorphosed magmatic rocks ranging in
age from Late Proterozoic to Cretaceous. Geochemistry, in concert with stratigraphic …

Rift and ocean floor volcanism from the Late Proterozoic and early Paleozoic of the Vermont Appalachians

RA Coish - Geological Society of America Memoirs, 1997 - pubs.geoscienceworld.org
Greenstone bodies from the western Vermont Appalachians and dikes intruding the
Adirondack massif comprise metavolcanic rocks that originated as basalt formed during …