Lesson plan
Champlain Thrust
The Champlain Thrust is a 200-mile long fault extending from southern Quebec, down through western Vermont in the Champlain Valley, and into eastern New York in the Catskills/Hudson Valley. This east dipping thrust fault transports Cambrian-Ordovician passive margin shelf rocks westward by about and places them on top of Middle Ordovician rocks. The Middle Ordovician accretion of the one or more island arcs terranes drove the initial thrusting during the Taconic Orogeny, though reactivation of the fault may have occurred during the middle Devonian Acadian Orogeny. The Champlain Thrust marks the most westerly thrust of the Taconic Orogeny.
Article summary
The Champlain Thrust is a 200-mile long fault extending from southern Quebec, down through western Vermont in the Champlain Valley, and into eastern New York in the Catskills/Hudson Valley. This east dipping thrust fault transports Cambrian-Ordovician passive margin shelf rocks westward by about and places them on top of Middle Ordovician rocks. The Middle Ordovician accretion of the one or more island arcs terranes drove the initial thrusting during the Taconic Orogeny, though reactivation of the fault may have occurred during the middle Devonian Acadian Orogeny. The Champlain Thrust marks the most westerly thrust of the Taconic Orogeny.
Key claims
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Discussion questions
- Summarise the article in your own words. Which single claim would you verify first, and why?
- Which claim in this article is most likely to be revised as the sources update? How would you check its current status?
- If two sources disagreed about one of these facts, what would you need in order to trust one over the other?
Bibliography
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Key claims and bibliography are generated from the same tracked claims and sources as the article page.