The Canadian Shield refers to the exposed portion of the continental crust underlying North America. The crust, also known as the North American Craton, consists of rock from the Archean and Proterozoic eons and extends from Mexico to Greenland. The Canadian portion runs from central Ontario<span> north to the </span>Arctic Archipelago, and fromLabrador<span> west to the </span>Northwest Territories<span>. The Shield includes some of the oldest rocks on Earth (possibly more than 4 billion years old). While at times a barrier to settlement, the Shield has also yielded great resources, including </span>minerals<span>, </span>coniferous forests<span> and the capacity for</span>hydroelectric<span> developments.</span>
Answer:
Explanation:
1. made from a dissolved mineral called calcite limestone
Limestone is a sedimentary rock derived from precipitation of the mineral calcite from a solution.
2. made of large grains of sand sandstone
Sandstone is a sedimentary rock derived from aggregates of sand grains.
3. made of very tiny grains of clay shale
Shale is a sedimentary rock made from very fine grain of clay minerals.
4. formed from sandstone quartzite
Quartzite is a metamorphic rock derived from a protolith of sandstone. When sandstone is subjected to pressure and temperature beyond that of metamorphism.
5. fine-grained rock with few or no crystals basalt
Basalt is an igneous rock dark in color and fine grained.
Neither
hope this helps!!!
Answer:
Earth is older than pretty much all fossils, but you can use the age of fossils to track the history and geography of Earth.
Explanation:
