Why are granitic rocks found in Tibet? Why are shallow marine sedimentary rocks present in the higher parts of the
Himalaya? What will be an ideal response?
Granitic plutons resulted from subduction and partial melting of the Indian plate beneath
Eurasia. Upon impact of India with Eurasia, India’s low density and resistance to subduction
caused it to be underthrust about 2000 km beneath Asia. This underthrusting caused
sedimentary rocks formed in the sea south of Asia to be thrust northward into Tibet.
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Lakes severely impacted by acidification will most likely
A) be clear and blue, but with few fish or other animals. B) be dark, muddy, and full of crustaceans and the larvae of insects. C) have abundant surface vegetation and many insects but few fish. D) be reddish in color due to the dissolved iron from nearby soils.
A typically green mineral with no cleavage is
A. olivine. B. muscovite. C. plagioclase feldspar. D. biotite. E. quartz.
The duration of strong ground shaking in the 1964 Alaskan Good Friday earthquake was 70 minutes.
Answer the following statement true (T) or false (F)
Atmospheric water vapor is both a greenhouse gas and affects human comfort level
Indicate whether the statement is true or false