What does this welded texture indicate about the formation of this rock?
A. It formed from an explosive pyroclastic eruption.
B. The magma formed some crystals before rising closer to the surface and solidifying.
C. The rock solidified at great depth.
D. The magma had abundant dissolved gas.
Answer: A
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Which of the following places is a Russian exclave within Eastern Europe?
A) Estonia B) Lithuania C) Kaliningrad D) Armenia E) Latvia
Which calculation was done to determine the rate of calcite accumulation in soils in Gile and Grossman's experiment?
A) the number of kilograms of calcite found in the soil column divided by time (calculated by radioactive carbon dating) B) the number of kilograms of calcite found in the soil column (estimated by comparison with known sources) multiplied by time (estimated by comparison with similar rock layers elsewhere) C) time (calculated by radioactive carbon dating) divided by the number of kilograms of calcite found in the soil column (measured in the lab) D) time (calculated by using known fossils) divided by the number of kilograms of calcite found in the soil column
Gravitational water is water bound to soil by gravity
Indicate whether the statement is true or false
Which of the following depositional features is produced
a. Marine terrace b. Sea stack c. Spit d. Sea arch e. Wave-cut platform