Lecture 02-15-2017

Question 1

What are some of the major geological issues related to the creation of hydroelectric dams?

Answer 1

1. Evaporation and seepage
2. Capture of mineral and sediment intended for downstream
3. Disruption of aquatic species’ migration patterns
4. Earthquake frequency

Question 2

Pleistocene epoch: __ millions years BP to ___ years BP

Answer 2

Pleistocene epoch: 2.6 millions years BP to 11,700 years BP

Question 3

Last ice sheets retreated _____ years ago

Answer 3

10,000

Question 4

Where is isostatic readjustment still occurring in the Windsor Essex Region? Why?

Answer 4

1. Great Lakes Drainage Basin

2. Retreat of glaciers

Question 5

In regard to changing sea level due to Global Climate Change, what are the two contrasting geomorphological effects taking place?

Answer 5

1. Uplift of shoreline from isostatic rebound from retreat of glaciers
2. Sea level rise from the melting of ice

Question 6

Solifluction

Answer 6

1. The gradual movement of wet soil or other material down a slope,
2. especially where frozen subsoil acts as a barrier to the percolation of water.

Question 7

Raised beaches

Answer 7

An ancient beach from when sea level was higher at one time (they are really far from the actual beach).

Question 8

Zone of Ablation

Answer 8

1. The area of a glacier where snow and ice experience an annual net loss
2. due to melting or evaporation.

Question 9

Moraine

Answer 9

Any glacially formed accumulation of unconsolidated glacial debris (soil and rock).

Question 10

What’s another name for glacial till?

Answer 10

Boulder clay, because it’s a chaotic mixture of a huge range of particle sizes (including clay and boulders).

Question 11

Outwash plain

Answer 11

1. The area in front of a glacier
2. consisting of gravel, sands and clays
3. deposited by meltwater streams

Question 12

Lacustrine

Answer 12

Relating to or associated with lakes.

Question 13

Varve

Answer 13

1. A pair of thin layers of sediment of contrasting colour and texture that
2. represent the deposit of a single year (summer and winter) in a lake.
3. Such layers can be used to determine the chronology of glacial sediments.

Question 14

Advantageous or hazardous to build in areas with a wide range of sediment coarseness?

Answer 14

Hazardous; unpredictable.