Université d'Ottawa
University of Ottawa Faculté des arts Faculty of Arts
Géograhie Geography
GEG2301
Lab #4
Karstic geomorphology
Nov. 1
st
; total: 13 points
Due: Nov. 10
th
before 4 PM
During this field outing, you’ll visit the largest Canadian Shield cave: Laflèche Cave. Use what
you’ve learned during the field trip to answer the following questions:
A. Cave formation
1) What is the type of rock in which the cave and tunnel were dug? [2 points]
2) A horizontal notch is developed on the tunnel wall in the upper section of the cave. How was it formed? [2 points]
B. Sediments
3) The lower-level sediments were excavated. What was the origin of these sediments?
[2 points]
C. Speleothems
4) In several places, there are white deposits on the walls. What is their origin, and what dating method can be used to infer when those were formed? [3 points]
5) Vermiculations are also observed on some of the cave walls what is their origin?
[2 points]
6) What are some of the animals that inhabit the cave? How do they orient themselves in the cave? [2 points]
