About 88 percent of geologic time is represented by the time span called the ________ era
A) Mesozoic B) Phanerozoic C) Precambrian D) Paleozoic
C
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What is the significance of foliation in a metamorphic rock? (Not what is foliation, but what does it
mean in terms of the rock's history?) What will be an ideal response?
You are on vacation in San Francisco and you find a rock called a serpentinite near the Golden Gate Bridge. You remember that serpentinites are metamorphic rocks commonly found in oceanic crust
The serpentinite contains the mineral serpentine [Mg3Si2O5(OH)4], which forms by reacting water (H2O) to olivine (Mg2SiO4). Your serpentinite formed by: a. contact metamorphism b. hydrothermal metamorphism c. regional metamorphism
Fresh water, excluding glaciers and icecaps, accounts for about how much of the earth's total water?
a. 1% b. 3% c. 10% d. 50%
Sea surface temperatures increased at an average annual rate of 0.07 C° (0.13 F°) from 1901 to 2012
Indicate whether the statement is true or false