TEST YOUR KNOWLEDGE Answers on Page 41
Robert G. Font, CPG-03953
robertfontphd@gmail.com
1. We are documenting the presence of sedimentary structures in our study area and encounter “lebensspurren.” What have we found?
a) A type of trough crossbedding. b) Sedimentary structures created by living organisms that include burrows, borings, trails, tracks and coprolites.
c) Asymmetric ripple marks with gentle up-current slopes and steeper down-current slopes formed by flowing water or wind moving in a generally-uniform direction.
d) Lobes, bulges and lumps that form along bedding planes and which hang down from the upper sedimentary layer into the lower one.
e) Star graduate student at D.U.M.B. University says: Easy one, dude; it’s the sound a family of lebens makes when purring!
2. “Trottoir” refers to: a) A narrow (sidewalk-like) intertidal, reef buildup separating the sea from the shoreline. b) A Cretaceous land-dwelling tortoise. c) A gently-sloping surface produced by wave erosion that extends far into the sea (or lake) from the base of a wave-cut cliff. d) A sodium-rich, non-marine evaporite mineral refined into soda ash with chemical formula [Na2CO3*NaHCO3*2H2O]. e) A bunch of dudes riding on trotting horses.
3. “Albian” relates to: a) The Proterozoic Eon or youngest division of the Precambrian. b) The youngest or uppermost stage or age of the Lower Cretaceous Period. c) The oldest or earliest stage or age of the Late Cretaceous Period. d) The oldest or earliest stage or age of the Lower Cretaceous Period. e) Man, it’s either a dude from Albany, NY, or one from Albania.
Albany or Albania?
4. “Graptolites” were colonial, filter-feeding organisms that lived from Cambrian time to the end of the Cretaceous. a) True. b) False.
5. A roughly linear relationship has been established between two geologic parameters in your field study area. What is the equation of the line of best fit in your X-Y plot, if the line contains the points (0, -1) and (5, 1)?
a) Y = 4.0X + 1 b) Y = 0.4X - 1 c) Y = 4.4X - 1 d) Y = 44X + 1 e) Dude, you and your equations! Exasperating!
36 TPG •
Jan.Feb.Mar 2026
www.aipg.org
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