Mount Royal is the deep extension of a vastly eroded ancient volcanic complex, which was probably active about 125 million years ago. As a result, some tourist guidebooks, such as the Michelin Guide to Montreal, state that it is an extinct volcano. The mountain, along with the other mountains of the Monteregian Hills, was formed when the North American Plate moved westward over the New England hotspot by a process known as intrusion: magma intruded into the sedimentary rocks underneath the area, producing at least eight igneous stocks. The main rock type is a gabbrocomposed of pyroxene, olivine and variable amounts of plagioclase. During and after the main stage of intrusion, the gabbros and surrounding rocks were intruded by a series of volcanic dikes and sills. Subsequently, the surrounding softer sedimentary rock was eroded, leaving behind the resistant igneous rock that forms the mountain.
Explored Mount Royale Park, excellent hiking through the forests. Then took Dash to Old Montreal to walk along the old streets. Saint-Paul street closed off to vehicular traffic, had lunch at a very nice restaurant. Hot and humid but an absolute eye-full of history and wonder. Took a pick to nip 2 oiseaux avec un roche. Poutine with Smoked Meat!
Off to Quebec City tomorrow.