GSCI 100 Lecture #44 - - Fall 2010

Welcome to Intro Geology!

GSCI 100 - Intro Geology
Fort Hays State University
Fall 2010

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Lecture #44

Podcasts: Section A (MWF 9:30am) | Section B (MWF 10:30am)
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Clerical:

All Homeworks MUST be completed by midnight this FRIDAY (5/7/10).

Homework #10 (Graded) was due last Friday (4/30/10). Please complete it ASAP if you haven't already done so.

Quizzes 17-20 are due by Noon on Wednesday, 5/12/10.

The (Final) Exam #5 Study Guide is posted. The final exam will be given at the following times:

Section A: Wednesday, May 12^th, 2010, 10:30am-12:10pm in 201 Rarick Hall
Section B: Monday, May 10^th, 2010, 11:30am-1:10pm in 201 Rarick Hall

Themes of the Day:

Glacial Depositional Landforms
Glacial Evidence of Climate Change

Glacial Depositional Landforms

Ice-contact deposits are generally poorly-sorted
Depositional Landforms:
- till (ground moraine)
- Moraines
  - end (terminal and recessional)
  - lateral - alpine glaciation
  - medial - alpine glaciation
  - interlobate - continental glaciation
- drumlin
- esker
- pitted outwash plain with kames and a kettle lake
- erratic boulder
- varves

Illustrated Glossary of Alpine Glacial Landforms

Test your knowledge of Glacial Landforms.

Glacial Evidence of Climate Change

Ice Ages - fundamental changes in global climate - Icehouse vs. Greenhouse - "Snowball Earth"
- orbital variations - Milankovich Cycles
- atmospheric circulation patterns - Himalayas
- ocean circulation patterns - Damming the Strait of Gibraltar
- global climate changes
- sea level changes
- isostatic changes
Evidence of past climate change from ice cores in Greenland and Antarctica
Where are we headed? Icehouse or Greenhouse?

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