Which of the following substances contains F- ions?
A) PF3
B) F2
C) CF4
D) CaF2
E) all of the above
D
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A(n) ____________________ is a break in the geologic record resulting, at times, from erosion. Fill in the blank(s) with the appropriate word(s)
Islands that are geologically part of a continent are called ____
a. atolls b. continental islands c. barrier islands d. oceanic islands
Which of the following best illustrates the connection between climate and geologic processes?
A) Water coming off a cooling magma emplaces metallic ores B) Hydrothermal vents near a mid-ocean rift create chimneys of mineral deposits C) Heavy rainfalls trigger debris flows D) Arid climates make sea level drop
The ore-forming process of ________ occurs as early-forming minerals settle to the bottom of a cooling magma.
A. mica and quartz B. hydrothermal solution C. gravity deposition D. residue formation E. crystal settling