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落基山脈占北美大陸西部大高原體系的大部地區.整體而言,落基山系所包含的各條山脈從亞伯達省北部和不列顛哥倫比亞省向南延伸,經美國西部至墨西哥邊境,全長約4,800公里。界線大多不易確定,尤其是西北邊遠地區,經常將阿拉斯加的布魯克斯山脈歸入落磯山系.這里有終年積雪的山峰、茂密的針葉森林、寬廣的山谷、清澈的溪流、開闊的天空和豐富的礦藏資源.大部分山脈平均海拔達2000到3000 米,有的甚至超過了4000 米,如埃爾伯特峰高達4399 米,加尼特峰高達4202 米,布蘭卡峰高達4365米.
Earth, a unique planet, restless and dynamic, continents shift and clash, volcanoes erupt, glaciers grow and recede, titanic forces that are constantly at work, leaving a trail of geological mysteries behind.
In this episode, we investigate the formation of the Rockies, the North American mountain range shrouded in mystery, flanked by huge slabs of rocks with ancient sea fossils buried high in its slopes, and crowned by jagged peaks that geologists believe were once double the height they are today. Scientists piecing together their story, uncover evidence of 1 ice sheets, collapsing mountains and explosive volcanic eruptions. A geological history that brings us one step closer to understanding HOW THE EARTH WAS MADE.
The Rockies, a 2 mountain range, towering high above the American West. It's the longest chain in North America, and the third longest in the world, stretching over 3,000 miles, from New Mexico, through Colorado, Wyoming and Montana, and north into Canada.
For decades, geologists have been puzzled about how this giant mountain range rose from the plains. The investigation begins with a specific type of rock.
"Here we are, in the heart of the Rocky Mountains; we're in an amazing place to begin with. And right here, at Red Rocks, we're in the midst of an amphitheatre of rock."
Thirteen miles west of Denver, Colorado, two 300-foot-high sandstone monoliths slope 45 degrees into the sky, each is taller than Niagara Falls. Together they form the walls of a unique musical venue.
課后題目: 學習完后，你能告訴我文章中空缺的單詞嗎？
