John Tuzo Wilson first proposed these regions to support mantle plume theory since they form “tracks” with relatively little movement. For 10 points each:
[10m] Name these regions found under Réunion and Iceland that form linear island chains anchored by an active leading volcano.
ANSWER: hotspots
[10h] The mantle plume theory of hotspots is supported by isotope analysis of the “flood” type of this rock that results from extensive volcanic eruptions. The Deccan and Siberian Traps are “provinces” made up of this rock.
ANSWER: basalt [prompt on large igneous provinces]
[10e] The earliest evidence for hotspots dates to this geological period that followed the Jurassic. The dinosaurs went extinct at the end of this third and final period of the Mesozoic era.
ANSWER: Cretaceous period
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