Limestone Classification and Interpretation - Warm-Up
Your Name
Essay Question
The Folk and Dunham classifications of limestones, while similar in many respects, differ in the fundamental observation(s) that must be made in order to use them. What is (are) the difference(s)?
Multiple Choice Questions
Which of the following limestone types is (are) deposited by relatively high-energy currents?
lime mudstone
biosparite
skeletal grainstone
oolitic packstone
biomicrite
intraclast wackestone
Which of the following situations is (are) likely to create ambiguity in the classification of a limestone?
matrix-supported limestone with microspar between the grains
limestone made of coarsely crystalline calcite with a few "ghosts" of skeletal particles visible
grain-supported oolitic limestone with crystals of calcite in the pore spaces, oriented perpendicular to the ooids and coarsening toward the center of the pores
grain-supported skeletal limestone with very finely crystalline calcite between the grains
hand specimen of grain-supported intraclast limestone with small fragments of fossil hash between the larger intraclasts
hand specimen of matrix-supported skeletal limestone