Geoscape Link: https://dcc.ilc.org/ses4u/locker/ses4u_20_ottawagatineau_geoscape_p.pdf

Qno.1
There are three main types of rocks.
1. Igneous rocks: (From fire)
Formed when molten rock (lave or magma) is cooled and hardens (eg granite)
2. Sedimentary rocks
Formed when pieces of existing rocks break off, are carried away, are deposited and become compressed or cemented together (eg sandstone, limestone)
3. Metamorphic rocks: (Changed form)
Formed when existing rocks are changed due to extremely high temperature and pressure (eg., marble, gneiss)
2. Rock-forming minerals in Ottawa-Gatineau rocks are: Granite contains quartz, K-feldspar, plagioclase, and small amounts of dark minerals, either mica or hornblende. Limestone contains calcite. Sandstone contains mostly grains of quartz.
3. The succession of Cambrian to Ordovician age sedimentary rocks in the Ottawa area, consists of sandstone, limestone, dolostone and shale units deposited in terrestrial to shallow marine environments associated with a widespread epeiric sea that transgressed the margins of the Precambrian Canadian Shield during the early Paleozoic.
4. Whales once swam in the sea covering the Ottawa ll Russell Low levels Little or no uranium Shawville Buckingham VI Quyon ll valley. The great weight of the ice sheet depressed the land surface by hundreds of metres, and, as the Al glacier retreated, about 12 000 years ago, the Atlantic ? Did you know? ... Landlocked marine fish 1732 monte Manotick Renf rew Arnpri or Gatineau Ot 1944 The major mineral resources of the region are crushed stone, sand, and V Crushed stone quarry Radon is estimated from Ocean flooded the Ottawa valley, forming the t Richmond awa G.R. Brooks (GSC 2004-060) levels of naturally occurring uranium in the top 10 to 30 cm of soil or rock. Champlain Sea. As the glacially depressed lands gradually rose, the sea receded, finally leaving the No detailed sampling Calabogie i this area Kana Potential maximum Protecting Ourselves earthquake intensity ta n Lake Ontario survive today in the Ottawa–Gatineau R. Harington, Canadian Museum of Nature 0 20 km Ottawa valley about 10 000 years ago. Beaches and deltas, now lying 220 m above present sea level, and a widespread blanket of marine mud (Leda clay) Manotick area. Trapped in isolated basins as sea level dropped, a marine-type stickleback in Pink Lake, Gatineau Park, and ‘red’ trout, a gravel. This aggregate is used Dried peat is vacuumed from bog surface by the construction Homeowners concerned about indoor radon levels should ? Did you know?... All rocks and sediments are naturally radioactive to varying degrees. By evaluating the local history of earthquakes and the local Over 50 years, there is a 10% chance that a site will experience geology, seismologists can produce maps predicting maximum ground shaking exceeding the intensity shown here. ground motion or intensity for a region. Seismological data are Landsat TM (5/7) shaded relief fusion. Landsat TM 7 Data collected by Bones of a young beluga whale found in a well excavation near Pakenham containing fossils ranging from tiny seashells to whale bones, are evidence of this sea in the present OTTAWA RIVER: A Vital Resource industry to make concrete and build Peat is plant material that slowly accumulates and form of salmon found throughout the area, decomposes in bogs. Peat moss, an important have their homes tested, Intensity VI:...