In 2000, the cliffs at Green Point were approved as the Global Stratotype Section and Point for the base of the Ordovician system by the International Union of Geological Sciences. The boundary is a section 60m thick composed of layers of shale and limestone with overturned beds dipping 60-70 degrees to the South East. It is marked by the first appearance of Iapetognathus fluctivagus, a conodont fossil, 4.8m below the earliest known planktic graptolite fossil, Rhabdinopora praeparabola.[2]
Cliffs layers viewed from the side.
The shales represent a 30 million year record of deep-ocean sediments laid in a base-of-slope environment in the Iapetus Ocean. The limestone layers indicate periodic avalanches from the shallower waters. Portions of the same limestone avalanches that came to rest further up the coastal slopes are featured at Cow Head. There, the individual rocks in the limestone conglomerate are much larger.[3]
Exposed cliff layers.
Campgroundedit
There are 31 drive-in campsites at Green Point.[1]
^ abCooper, R. A., Nowlan, G. S., and Williams, S. H. (2001). Global Stratotype Section and Point for Base of the Ordovician System. Episodes, 24(1). Retrieved August 18, 2008, from http://www.stratigraphy.org/Tremadocian.pdf
^Burzynski, M. (1999). Gros Morne National Park. St. John's, NL: Breakwater Books. p.44 ISBN1-55081-135-5
External linksedit
Overview of Global Boundary Stratotype Sections and Points
green, point, newfoundland, labrador, green, point, located, north, town, rocky, harbour, gros, morne, national, park, west, coast, newfoundland, home, small, summer, fishing, community, drive, campground, 2000, green, point, designated, global, stratotype, se. Green Point is located 12 km north of the town of Rocky Harbour in Gros Morne National Park 1 on the west coast of Newfoundland It is the home to a small summer fishing community and a drive in campground In 2000 Green Point was designated the Global Stratotype Section and Point GSSP representing the division between the Cambrian and the Ordovician systems 2 Green Point at low tide Contents 1 Geology 2 Campground 3 See also 4 References 5 External linksGeology editIn 2000 the cliffs at Green Point were approved as the Global Stratotype Section and Point for the base of the Ordovician system by the International Union of Geological Sciences The boundary is a section 60m thick composed of layers of shale and limestone with overturned beds dipping 60 70 degrees to the South East It is marked by the first appearance of Iapetognathus fluctivagus a conodont fossil 4 8m below the earliest known planktic graptolite fossil Rhabdinopora praeparabola 2 nbsp Cliffs layers viewed from the side The shales represent a 30 million year record of deep ocean sediments laid in a base of slope environment in the Iapetus Ocean The limestone layers indicate periodic avalanches from the shallower waters Portions of the same limestone avalanches that came to rest further up the coastal slopes are featured at Cow Head There the individual rocks in the limestone conglomerate are much larger 3 nbsp Exposed cliff layers Campground editThere are 31 drive in campsites at Green Point 1 See also editGros Morne National Park List of Global Boundary Stratotype Sections and PointsReferences edit a b Gros Morne National Park Visitor information 2007 Retrieved August 18 2008 from http www pc gc ca pn np nl grosmorne visit visit4 e asp 04 a b Cooper R A Nowlan G S and Williams S H 2001 Global Stratotype Section and Point for Base of the Ordovician System Episodes 24 1 Retrieved August 18 2008 from http www stratigraphy org Tremadocian pdf Burzynski M 1999 Gros Morne National Park St John s NL Breakwater Books p 44 ISBN 1 55081 135 5External links editOverview of Global Boundary Stratotype Sections and Points Gros Morne National Park of Canada49 40 56 N 57 57 19 W 49 68222 N 57 95528 W 49 68222 57 95528 Retrieved from https en wikipedia org w index php title Green Point Newfoundland and Labrador amp oldid 918422342, wikipedia, wiki, book, books, library,
