Nipper's Harbour, Newfoundland. 8/4 Day 12
TO NIPPER'S HARBOUR
It is beautiful here! The four teenagers from this town met us in their green pickup truck, after following Jitney 23 for a brief period of time, and led us on a short hike to a scenic waterfall (see picture to right). They then took us to "Lions Head" which is a formation just off the rocky coastline, that loosely resembles the body of a lion. These Newfies truly have accents, referring to the city of St. Anthony as "St. Antny" and the three girls referred to their male friend Riley as "Roley." A great afternoon! Back to geology...
Minerals & Rocks:
This green stone is known as a green schist. Chlorite is the mineral that gives the rock a green hue and the lime/yellow green color is due to the presence of epidote. This particular schist is a low-grade metamorphic rock; meaning it was 'only' heated to 200-300 degrees celsius and put under 1-2 kilobars of pressure during formation..
Did This Get Here?
Quick facts: How a dike is formed: When a fracture occurs on the ocean floor, magma pushes through, rapidly cooling on all sides and forms a dike. How the ophiolite complex is formed: If dike formation happens repeatedly, a massive complex will form (up to 4 km). **link? to vocab page?**
This is a sheeted dike; a part
of the tilted, broken and shifted ophiolite complex. We are in the Dunage
terrain; no longer the Grenville Basement material! There is a higher
degree of metamorphism. It is an ophiolite complex that differs chemically
from any other ocean-ridge basalts. This did not form at the spreading
divergent region of the ocean floor.
Click on any picture for a bigger view!