What is the importance of a marker bed? What will be an ideal response?
Marker beds are important because they can be used for correlation. Ashfalls provided good marker
beds that connect marine and nonmarine sequences, and they often spread far. Lava flows are also
good marker beds because they spread far and are distinctive
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For the following acid-base reaction, identify which salt is formed. HCl + NaOH ? ? + H2O
A) NaCl B) H3OCl C) NaOH2 D) NaOH2Cl E) none of the above
Explain how coastal dune fields need not originate in desert climates. What will be an ideal response?
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?
Put the following steps in the correct sequence according to how one would take a survey reading
1. The angle between the line sighted to the star and a line drawn directly toward Earth's center permits calculation of latitude. 2. Surveyors sight a telescope on the North Star, which is almost directly above Earth's rotation axis. 3. A table is set up with its level surface perpendicular to a line directed towards Earth's center. A) 1, 2, 3 B) 2, 1, 3 C) 3, 2, 1 D) 3, 1, 2