In adjacent rocks that show a gradual increase in metamorphic intensity, the first appearance of a
particular index mineral indicates
a. the location of the minimum pressure and temperature conditions needed for the formation
of that mineral.
b. the location of the maximum pressure and temperature conditions needed for the
formation of that mineral.
c. the rocks formed under the same broad conditions of temperature and pressure.
d. the location on Bowen’s reaction series where that mineral is in equilibrium.
A
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The three most commonly spoken languages in the Middle East and North Africa are
A) Arabic, Berber and Turkish B) Arabic, Turkish and Persian (Farsi) C) Arabic, Kurdish and Persian (Farsi) D) Arabic, Kurdish and Hebrew E) Arabic, Hebrew and Turkish
Werner invited his students to see a particular rock type in France, whereby their viewpoint about the formation of all rocks changed. Why was this so?
A) They saw lava flows that clearly had not issued from the volcanoes and were composed of a rock called basalt; Werner believed that basalt was volcanic. B) They saw lava flows that clearly had issued from the volcanoes and were composed of a rock called basalt; Werner didn't believe that basalt was volcanic. C) They saw sandstone that contradicted their Neptunist beliefs. D) They saw metamorphic rocks that contradicted their Neptunist beliefs.
The states of matter in which water exists is primarily determined by ________
A) density B) salinity C) chlorinity D) temperature E) pH
A major contributing factor to the lack of precipitation for the Namib and Atacama deserts are
A. cold ocean currents. B. rain shadow. C. distance to the sun. D. distance to ocean.