EAS100 Lecture 15: EAS 201 - Midterm Review & Intro to Cryosphere

93 views2 pages
EAS 201: Lecture 15
February 8, 2019
Midterm Review
Lithosphere records ‘magnetic stripes’ of normal and reversed rocks.
Magnitudes: energy released of magnitude 7 is ____ times greater than magnitude 5 =
Increasing distance from a mid-oceanic ridge means rocks are older.
Polar-wander curves on continents show how continents have moved, or drifted,
relative to the magnetic poles.
Half-life of carbon-14 is ~ 5000 years, log found dated at 15000 years, what fraction of c-
14 remains (1/2 x ½ x ½ = 1/8).
The planets formed from the same cloud of gas & dust as the sun.
Inner and outer planets of solar system’s differences result of gradient in temperature
during formation.
Feldspar is dominant silicate in Earth’s crust.
Earth is ~ 4.5 billion years old.
Obsidian is NOT a mineral…
Amplitude of ground movement in magnitude 7 earthquake is 100 times greater than
magnitude 5.
Frost wedging is a physical weathering that increases surface area of rocks.
Rate of plate movement is ~ 2-5 centimeters per year.
Lecture Notes (borrowed from Karlis Muehlenbachs’ slides February 8, 2019)
Cryosphere: Glaciers & Glaciation
o Mass balance & glacier formation.
o Formation of glacier ice.
o Glacier flow & types.
o Glacial geology & geomorphology.
o Ice sheets & glaciation.
o Ice cores.
Glaciers are formed when the accumulation of snow is greater than its removal
(ablation) annually.
Unlock document

This preview shows half of the first page of the document.
Unlock all 2 pages and 3 million more documents.

Already have an account? Log in

Get access

Grade+20% OFF
$8 USD/m$10 USD/m
Billed $96 USD annually
Homework Help
Study Guides
Textbook Solutions
Class Notes
Textbook Notes
Booster Class
40 Verified Answers
$8 USD/m
Billed $96 USD annually
Homework Help
Study Guides
Textbook Solutions
Class Notes
Textbook Notes
Booster Class
30 Verified Answers