List the most common biogenic and chemical sedimentary rock types, and describe the depositional environments that favor deposition of each sediment type
What will be an ideal response?
Limestone is made of inorganic and organic (skeletal) calcite. Chert is composed of inorganic and organic (skeletal) quartz. Dolostone is composed of calcite in which Mg2+ is substituted for Ca2+, often through interaction of groundwater with limestone. Evaporites such as halite and gypsum form in evaporative environments such as lagoon or desert lakes. Coal is formed from thick accumulations of organic matter that occurs in swamps.
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Shear, or drag, velocity can be described as:
a. wind velocity at the maximum height of sand transport b. wind velocity at the average height of sand transport c. wind velocity at ground surface d. the velocity gradient above the land surface
The European Union has twenty-three official languages. Which language is the unofficial standard for communication and official documents, with currently about 65% of all documents drafted in this language
a. German b. Italian c. French d. Greek e. English
Tornadoes are most often generated along the cold front of a middle-latitude cyclone
Indicate whether the statement is true or false
The Pacific Rim economy accounts for how much of the world's GDP?
A) 45% B) 58% C) 65% D) 73% E) none of the above