The deformation of sedimentary strata in the American West during the Jurassic Period was caused by the Farallon plate subducting beneath the North American plate.
<h3>What purpose served the Farallon plate?</h3>
About 100 million years ago, the Farallon oceanic plate was placed between the diverging Pacific & North American plates, which later united to form the San Andreas fault. The Farallon was subducted beneath North America and then plunged deep into the mantle when those plates clashed, causing a significant component of the structure to disappear.
<h3>When did the Farallon plate go under the ocean?</h3>
50 million years ago, at the start of the series, the Farallon plate started to press against the North American continent, sinking beneath it and forming mountain ranges like the Rocky Mountains. The Farallon plate was subducting as a single unit along the entire length of North America, from Alaska down past Mexico.
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Answer: C. Region B
Explanation:
Region B is the North American continent which includes the United States. Land here is quite fertile and resources are plentiful as the continent boasts of vast farmlands, timber and an abundance of coal.
The people of this continent therefore need not import a lot of things. They do however have to import oil. Even though there are rich oil deposits present, these are sometimes quite expensive to extract which is why the region needs to import some of the oil that its people need.
Answer:
704 million years in Geology.
Explanation:
Lead-207 would be the daughter.
From largest to smallest:
Biosphere, biome, ecosystem, habitat
Answer:
at the bottom of a deep valley
Explanation: