Test 4.docx

2 Pages
Unlock Document

University of Toronto Scarborough
Environmental Science
Nick Eyles

TEST 4: EES C31 Oct 9, 2013 1. What happened close to the Columbia Glacier in Alaska in March 1989? Exxon Valdez Oil Spill: the oil tanker (Exxon Valdez) with full load of oil sailed through Valdez Narrows, the captain changed his sea line in order to avoid icebergs from Columbia Glacier, and it leaded to devastating oil spill. 2. How was the glacier involved? It is because of retreating of Columbia Glacier in 1980s, large amount of icebergs were released and floating on the sea. The icebergs related to Exxon Valdez Oil Spill is one of the Columbia Glacier icebergs, wind and ocean current drove it to Valdez Narrows and met Exxon Valdez. 3. How many glaciations in the last 3 million years? Around 50 4. What is a plume in a glaciomarine setting? It is a current of turbid water which as a result of a large meltwater stream underneath an ice entering a sea or an ocean. 5. Pock mark? A crater created by vertical escape of gas or overpressure fluid water come up from deep below the sea floor which triggered by ice bergs. The process creates a tube, and then sediments fall in, a crater forms. 6. IRD? IRD refers to ice rafted debris. It is sediment which transported by floating ice and released into water body. 7. Ichnofossil? It is a structure of sediments left by organisms, a trace fossil. 8. Shelf edge? It is the boundary between continental shelf and continental slope, and it is also the farthest line a glacier could expand to. 9. Leda Clay? It is highly sensitive unconsolidated sediment that was deposited in the Champlain Sea at the end of the last Ice Age. It is made of clay size particles but not make by clay mineral, in other words, it soft as clay but non-cohesive. 10. What does ‘co-seismic’ mean? The term used to describe earthquake triggered (event), being where earthquake wa
More Less

Related notes for EESC31H3

Log In


Don't have an account?

Join OneClass

Access over 10 million pages of study
documents for 1.3 million courses.

Sign up

Join to view


By registering, I agree to the Terms and Privacy Policies
Already have an account?
Just a few more details

So we can recommend you notes for your school.

Reset Password

Please enter below the email address you registered with and we will send you a link to reset your password.

Add your courses

Get notes from the top students in your class.