North Mountain basalt (201 Ma, Nova Scotia, Canada)
The basal member of the North Mountain basalt (201 Ma, earliest Jurassic) at Economy Mountain at the northern end of the Bay of Fundy, Nova Scotia rests on Late Triassic Blomidon sandstone. A fault has dropped the basalt to a lower level in the foreground. The Tr-J boundary (and mass extinction horizon) lies within the bleached zone just beneath the basalt in the cliff face. The North Mountain basalt group covers the Mesozoic Fundy Basin with more than 6,000 km3 of flows, and it represents a small part of one of the major volcanic events of the northern section of the Central Atlantic Magmatic Province, which extends across at least 10,000,000 km2 within four continents that were later rifted from Pangaea. Photo taken in June of 1999 by J. G. McHone.
Hames, W.E., McHone, J.G., Ruppel, C., and Renne, P., eds., 2003. The Central Atlantic Magmatic Province: American Geophysical Union Monograph 136, 267 p.
Stevens, G.R., 1987. Jurassic basalts of the northern Bay of Fundy region, Nova Scotia, in Roy, D.C., ed., Centennial Field Guide - Northeastern Section: Geological Society of America, v. 5, p. 415-418.