Sediment sorting and selective concentration of minerals via currents in a coastal environment that are mechanically concentrated by water are called
A. placer deposits.
B. ore deposits.
C. hydrothermal deposits.
D. metasomatic deposits.
Answer: A
You might also like to view...
Which of the following does NOT represent one of the United States' 3 main eras of immigration?
A) involuntary migration from Sub-Saharan Africa in the seventeenth and eighteenth centuries B) voluntary migration from the British Isles due to religious persecution in the seventeenth and eighteenth centuries C) Ellis Island became a major immigration processing center in the late nineteenth and twentieth centuries. D) Early twentieth century immigrants from southern and eastern Europe coincided with the diffusion of the Industrial Revolution through continental Europe. E) The leading sources of twenty-first century Asian immigration are the result of climate change in places such as Bangladesh, Oceania, or the Maldives.
Studies have shown that the sea level:
A) should drop over the next 100 years. B) has risen about 25 centimeters since 1870. C) should not change significantly over the next 100 years. D) has not changed measurably over the last century.
Which of these numbers is near a site with active seafloor spreading?
A. 1 B. 2 C. 3 D. 4 E. None of these choices are correct.
Judge the following sentence according to the criteria given below: Most of the physical properties of pure water and seawater are very similar BECAUSE seawater is 96.5% water
A) The assertion and the reason are both correct, and the reason is valid. B) The assertion and the reason are both correct, but the reason is invalid. C) The assertion is correct, but the reason is incorrect. D) The assertion is incorrect, but the reason is correct. E) Both the assertion and the reason are incorrect.