It is a large area of exposed precambrian igneous and highgrade metamorphic rocks geological shield. Erratics are large rocks that were picked up advancing ice sheets and carried hundreds of kilometers from their source. The region, as a whole, is composed of ancient crystalline rocks whose complex structure attests to a long history of uplift and depression, mountain building, and erosion. Most of all, the scenery is dominated by majestic forests on the canadian shield. Precambrian rocks of the canadian shield and the paleozoic rocks within the upper.
The first modern hard rock mine in the canadian shield, near madoc, ontario, opened in 1866 after gold was found there. The canadian shield contains the largest concentration of precambrian rocks of all natural features on the planet. Cns suddenly cancelled our insurance with 2 weeks notice, citing underwriting as the reason. Canadian shield simple english wikipedia, the free. Another recognizable feature are rocks called erratics. This vast region, with its store of forests, waterpower, and mineral resources, is being increasingly developed. The canadian shield covers most of the north, with the exception of the hudson bay lowlands. Sedimentary cover of the canadian shield through mesozoic. Rockshield engineered wood products operates a plywood overlay mill in cochrane, ontario, the heart of renewable conifer and aspen forests. When the belts finally collided, vast mountain ranges were formed and many of the rocks were deformed and metamorphosed at elevated temperatures and pressures. Gold, copper, lead, diamonds, platinum, nickel, hydroelectricity, forestry. In addition, the soil is too thin to be of use as only a thin layer now covers the canadian shield. Some areas contain more rocky deposits than others.
Metamorphism of the canadian shield, ontario, canada. The shield was rifted apart between canada and greenland by seafloor spreading in the labrador sea and in baffin bay between 90 and 40 million years ago. The canadian shield has many reso urces such as rich minerals and fields full of rocks, diamonds, nickel, gold, and copper. This paper is an outgrowth of the compilation of metamorphic information for the canadian shield in ontario, and comple ments the recently compiled metamorphic map of the canadian shield. Rock ontario, ontario ministry of northern development and mines, rock on. The canadian shield gc4jmq3 was created by the hunting rabbit on 81220. Via rail took over in 1978, and in 1990 reduced the canadian to torontovancouver service primarily along canadian national tracks. Canadian shield lions head, a wavelashed arch of stone on the lake superior shores of ontarios sleeping giant provincial park, exemplifies the canadian shields rugged beauty. The canadian shield stretches into the usa, and most of greenland. Soil and natural vegetation the canadian shield has the boreal forest in the south and tundra in the north. If it didnt why would millions of tourists flock here each year.
Rockshield engineered wood products superior hardwood. The canadian shield also covers northwest territories and nunavut. This ecoregion includes lake nipigon, big trout lake, the abitibi plains, and riviere rupert plateau tec 9496 and 100 ecological stratification working group 1995. Substantial gold discoveries were also made in ontario at kirkland lake in 1906 and timmins in 1912, and in quebec at rouynnoranda in 1920. Shaped like a great v, with hudson bay in the center, the canadian shield comprises some 1,850,000 square miles 4,790,000 square kilometers. Canadas topography is dominated by the canadian shield, an icescoured area of precambrian rocks surrounding hudson bay and covering half the country. Canadian shield the canadian shield is made up of precambrian rock and underlies about half the total area of canada. Its age means the rock was created approximately 300 million years after the formation of earth. Igneous rock granite, gneiss forms when molten rock cools. For example, metamorphic rocks of the canadian shield were carried along, and deposited many kilometers away in. Only named as such in 1883, the canadian shield is an empty immensity of lakes, bogs, rivers, forest and protruding ribs of hard precambrian crystalline rock that. Instead, they show similarities to ancient rocks found in canada, in the exposed section of the continental crust called the canadian shield.
This book traces the geologic evolution of the shield, its first. This area completely surrounds the hudsons bay in the shape of a horseshoe. Canadian shield students britannica kids homework help. In 2008, researchers estimated rock found on the northern shore of hudson bay, 40 km south of inukjuak, to be 4. The canadian shield is the largest landform region in canada. Around the same time, silver was discovered near cobalt, ontario, in 1903. The fossil evidence suggests that these sedimentary rocks were formed when ontario was flooded by shallow, tropical seas. Some of the ancient mountain ranges can still be recognized as a ridge or belt of hills, but the present appearance of the. General information the canadian shield is the largest of canadas 6 physical regions.
In 1955, cpr renamed its transcontinental route between montrealtoronto and vancouver the canadian, with new streamlined trains. The southern part of the shield has thick forests while the north is covered with tundra. Gc4jmq3 muskoka rocks the canadian shield earthcache. Covering more than half of canada, it also includes most of greenland and extends into the united states as. Landscape facts it is also called the laurentian plateau. It includes the northwest territories, nunavut, quebec, alberta, saskatchewan, manitoba, ontario and newfoundland and labrador labrador only. On, edit images, videos and 360 photos in one place. Ancient mountains of the canadian shield article about. After malachi, the train loops around and heads through ottermere, minaki, redditt, farlane, canyon and red lake road, where it loops around once more and stops at richan and millidge, and continues into. Stretching from the manitoba border in the west to ottawa and the st. Check out my anishinaabe rock art folder for detailed posts on specific sites.
It is the ancient geological core of the north american continent the north american craton or laurentia a continuation of the shield is in west greenland, to which it was once connected. Being a canadian carries with it a tangible sense of living on the edge of a vast barren interior. Mining agnicoeagle mines, forestryresolute forest products, hydroelectric ontario power generation. Only named as such in 1883, the canadian shield is an empty immensity of lakes, bogs, rivers, forest and protruding ribs of hard precambrian crystalline rock that covers more than half of the total land area of canada. Erosion of this extremely rugged, mountainous landscape deposited enormous quantities of clays, silts, sands and gravels into the surrounding waters. This region of rocks, lakes, and forests, also known as the precambrian shield, occupies more than half of canada.
It stretches from ontario to yukon taking up 15 of canadas area which is 4. The majority of panels are hardwood plywood to which rockshield adds a hardwood veneer such as oak, cherry, maple, birch, etc. Most of northern ontario is situated on the canadian shield, a vast rocky plateau. Lawrence river in the east, it covers over half of ontario. People have built dams, created mines and smelters, logged forests among other things to impact the province. Formed in the precambrian eon, the rock we are looking at today was once the basement of mountain ranges and volcanoes that have since eroded away over the last few. Islands among the waves, north shore of lake superior, ontario the distant hills are often quite rounded thanks to the glaciers, and in many places, the shoreline rock has been shaped into smooth forms, first by the glaciers, and since the end of. For example, metamorphic rocks of the canadian shield were carried along, and deposited many kilometers away in the surrounding lowlands. Canadian shield rock cut download this royalty free stock photo in seconds. Scarborough ontario history the canadian shield and ice age the rocks that form the canadian shield were formed about four billion years ago during the archeon eon of the precambrian era.
Canadas largest geographical feature, it stretches east to labrador, south to kingston on. All the rocks of the landforms around the canadian shield were born from its sediments and water. The canadian shield is also called the laurentian plateau, or bouclier canadien french it is a large area of exposed precambrian igneous and highgrade metamorphic rocks geological shield. Canadas largest geographical feature, it stretches east to labrador, south to kingston on lake ontario and northwest as far as the arctic ocean. Similar smooth elongate mounds are found on the 48 western shelf which do. Next, on your list should be visiting some of the most beautiful lakes and embark on a canoe or hiking adventure. The canadian shield covering about onehalf of all of canada is the nations oldest landform feature, which also holds earths most ancient of rock the canadian shield. A brief look at some metamorphic rocks in the canadian shield. T he canadian shield is also known as the precambrian shield. A typical view of a part of ontario that is inside the canadian shield. It includes the northwest territories, nunavut, quebec, alberta, saskatchewan, manitoba, ontario. Choose from 64 different sets of canadian shield flashcards on quizlet.
Jan 22, 2018 found in georgetown, a small town of just a few hundred people in the north east of australia, the rocks are unlike other rocks on the australian continent. Find canadian shield stock images in hd and millions of other royaltyfree stock photos, illustrations and vectors in the shutterstock collection. Learn canadian shield with free interactive flashcards. It is a land of the canadian shield, with exposed precambrian rock, lakes and evergreen forests. Canadian shield definition, location, map, landforms. Which provinces and territories are in the canadian shield. The canadian shield constitutes the largest mass of exposed precambrian rock on the face of earth. Before 1955 the canadian was a canadian pacific railway cpr train between toronto and chicago. Canadian shield, one of the worlds largest geologic continental shields, centered on hudson bay and extending for 8 million square km 3 million square miles over eastern, central, and northwestern canada from the great lakes to the canadian arctic and into greenland, with small extensions into the northern u. Rocks from the canadian shield have been found in northern australia, suggesting parts of the two countries once were part of an ancient supercontinent, according to geologists.
Some types of trees include birch, aspen, spruce, willow and pine. Now in ontario, the train travels through the rugged canadian shield, stopping at rice lake and copelands landing en route to malachi. To the east lies the eastern ontario plain, between the ottawa and st. The canadian shield covers most of the greenland, nunavut, ontario, and quebec. Thousands of new, highquality pictures added every day. Megalineated fi eld near kaladar, canadian shield, eastern ontario. The region is largely undeveloped but has great waterpower potential and is a source of minerals, timber, and furbearing animals. Jan 17, 2020 cns suddenly cancelled our insurance with 2 weeks notice, citing underwriting as the reason. Laurentian shield or laurentian plateau in canada the wide area of precambrian rock extending west. Nelson education elementary social studies infocanada.
The canadian shields igneous base abounds in copper, gold, iron, and nickel. Go wildlife spotting in the canadian arctic and visit major cities including ottawa, montreal and quebec. The canadian shield is also called the laurentian plateau, or bouclier canadien french. The canadian shield is a large section of canada and some parts of the northeastern united states that was swept by glaciers, leaving only hard, bare rock covered with a thin layer of dirt and. The southeastern superior province of the canadian shield preserves a very complete record of the accretion and deformation of juvenile crust during a 100 ma period, 2750 ma through 2650 ma. Hence it poor for farming but it is well suited for mining and. A jumble of ceaselessly recycled igneous, sedimentary, and metamorphic rocks makes up the earths surface. The canadian shield is canadas largest rock formation, resulting from ancient volcanic action.
Here are some web sites to help you with your research web links. The canadian shield covers quebec, ontario, northern manitoba, northern saskatchewan and a very small piece of northeastern alberta. The canadian shield, also called the laurentian plateau, or bouclier canadien french, is a. The shield contains precambrian rock, and the exposed portions bare the marks of glacial activity. On the east it underlies most of quebec and labrador.
Examples include abandoned farmlands in central ontario, along the edge of the canadian shield. Landforms t he canadian shield is also known as the precambrian shield. Nov 30, 2010 being a canadian carries with it a tangible sense of living on the edge of a vast barren interior. First nationsfood beaver sometimes eaten as food 23. These areas include ancient mountain ranges and hills. Found in georgetown, a small town of just a few hundred people in the north east of australia, the rocks are unlike other rocks on the australian continent. Canadian shield definition of canadian shield by the free. Lions head, a wavelashed arch of stone on the lake superior shores of ontarios sleeping giant provincial park, exemplifies the canadian shields rugged beauty. It borders eastern manitoba, and is made up of canadian shield and boreal forest. The central canadian shield forests stretch across northern ontario and quebec. Nelson education school elementary social studies infocanada student centre the canadian shield why people visit.
Northern ontario was once made up of a series of volcanic and plutonic rocks separated by oceans. Southern ontario paleozoic rocks earth sciences museum. Scarborough ontario history the canadian shield and ice age. Mounting evidence suggests a remote australian region was. The midwestern canadian shield forests that run westwards from northwestern ontario have boreal forests that give way. It is the ancient geological core of the north american continent the north american craton or laurentia. Anishinaabe pictograph sites of the canadian shield.
Learn vocabulary, terms, and more with flashcards, games, and other study tools. Only named as such in 1883, the canadian shield is an empty immensity of lakes, bogs, rivers, forest and protruding ribs of hard precambrian crystalline rock. Megalineated fi eld near kaladar, canadian shield, eastern ontario location. Overlying the canadian shield in the far north and in southern ontario are young sedimentary rocks which range in age from 540 to 360 million years. The canadian shield, also called the laurentian plateau, or bouclier canadien french, is a large area of exposed precambrian igneous and highgrade metamorphic rocks geological shield that forms the ancient geological core of the north american continent the north american craton or laurentia. Ontario has the most varied landscape of any canadian province. The canadian shield aka the precambrian or laurentian shield makes up more than half of canadas landmass. The canadian shield is the principal area of north america where rocks of precambrian age i. Twothirds of the province lies under the canadian shield. Northern ontario report legislative assembly of ontario. The canadian shield also called the precambrian shield, laurentian shield, or laurentian plateau is a large thinsoiled area over a part of the north american craton a deep, common, joined bedrock region in eastern and central canada and adjacent portions of the united states, composed of base rock dating to the precambrian era between 4. Mar 08, 2017 the canadian shield contains some of the oldest rocks on earth. This vast expanse of ancient precambrian igneous, metamorphic and sedimentary rocks, glacial overburden, forest and muskeg has been canadas leading source of precious and base metals. These rocks shaped the canadian shield by alternatively depositing in river basins and eroding.