Western cordillera’s geologic history
The world has been shaped, moved, and hurt in many ways today we are going to learn about its pacific side history the western cordillera. The major influence on the western cordillera is the enormous ocean. There are four main parts to it. First the margin phase the land is being moved across to form the great continents. The ocean island phase is when in the early Jurassic period there are subductions all over the world causing great big islands and arcs so the continents slowly retreat. The collisional phase starts now when the continents collided with each other and that caused faulting. As in the Precambrian era [now] the Rockies are decreasing in size.
Some people ask what the western cordillera means it means in Spanish a very long range of mountains in this case. The western cordillera is divided into three subdivisions. First are the West Coast Mountains spreading along British Colombia. Second is the interior plateaux and last would be ---------- the Rockies
The Rockies--------- beautiful place to be it borders from Mexico all the way into Canada the sad thing is that they are slowly decreasing in size. These landform monsters were carved out by huge glaciers moving along the crust to form them they were also made by colliding tectonic plates driving them upwards. Two forces working at one thing. The Rockies you might say have very thick vegetations just like in the Appalachians.
The Yukon River starts from the Yukon all the way into Alaska and into the northern pacific in all around 3200 miles long. Around this river there are many different communities and wildlife. This wonderful northerly oasis holds many different species of wildlife.
West Coast Mountains located along the shores of British Colombia they were made by oceanic plates moving under the continental plates they are very prone to earth quakes some of the volcanoes were earlier formed than others and all the mountains are covered with lush.
The interior plateaux it is a very highland flat all over British Colombia in the mountains are located farms, ranches, and small communities. The interior plateau is a very big tourist sight.
