TEST YOUR KNOWLEDGE Answers on Page 36
Robert G. Font, CPG-03953
robertfontphd@gmail.com
1. Two minerals that crystallize first from the cooling of an original mafic magma include: a) Olivine and quartz. b) Olivine and anorthite. c) Orthoclase and quartz d) Horrorblend and bitetite
2. “Covalent bonding” defines: a) A linkage formed by shifting electrons from one atom to another. b) A linkage maintained by weak residual charges between atomic sheets. c) A linkage formed by sharing electrons. d) An online dating site for chemists.
3. This hydrocarbon from the alkane family is represented by the formula C3H8: a) Propane.
b) Ethane. c) Butane. d) Stinkane.
4. A core shows Kimmeridgian strata overlying Campanian rocks. What can we conclude? a) The stratigraphic sequence reveals a nonconformity. b) The stratigraphic section is inverted. c) The stratigraphic sequence contains Triassic and Jurassic lithologic units. d) The rocks must be really ugly, dude.
5. Consider an inclined earth block of a given lithologic unit with volume “bcd” that slides over a detachment surface. Let: • “b”, “c” and “d” = length, width and thickness of the block, respectively.
h” = horizontal force acting on the block.
• “” = the coefficient of friction along the detachment surface. • “p” = rock density; “g” = acceleration of gravity.
h” required to move the earth block?
h h h d) Dude, I beecaame a gigiligist not todoo dis kiind uf zing.
34 TPG •
Jan.Feb.Mar 2021
www.aipg.org
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