TEST YOUR KNOWLEDGE Answers on Page 46
Robert G. Font, CPG-03953
robertfontphd@gmail.com
1. Which type of plutonic intrusive body is massive, concordant, lenticular and depressed in its central region? a) Laccolith b) Lopolith c) Dike d) Batholith
2. We perform a strength test for a rock of interest in the laboratory. The stress-strain curve is shown below.
Which of the choices below best applies? a) Saturated clay compressed at low strain rate. b) Limestone tested under high pressure and temperature conditions. c) Quartzite tested under unconfined compression at high strain rate. d) Halite deformed at intermediate temperatures at low strain rate.
e) Dude, that’s a graph of my mind as it snaps when I try to answer these questions!
3. “Casagrande’s Plasticity Chart” is helpful in separating and identifying key silty and clayey soil or sediment types. It is based on values of liquid limit and plasticity index. In reference to Casagrande’s chart and using the “Unified Soil Classification System”, which of the choices below indicate an earth material that falls above the “A Line” and to the left of the “B line”?
a) CH b) MH c) CL d) ML e) Dude, I could tell you about the “big house chart.” As you can see, I am multilingual. You should be impressed, man…
4. In terms of stream drainage patterns, a “trellis pattern” is characteristic of flat or gently-sloping land: a) True b) False
40 TPG •
Jul.Aug.Sep 2024
www.aipg.org
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