Class Notes (835,873)
United States (324,281)
Geography (207)
GEOG 2110L (50)


5 Pages
Unlock Document

GEOG 2110L
David Stanley

INTRODUCTION TO GEOMORPHOLOGY Definition: The science of landforms; their origin, evolution, form, and spatial distribution * The development and changes on the earth’s surface over time. Basic Terms: Landform: individual element of a landscape EX: a mountain, a river, a hill, etc. Topography: Earth's ridges, valley's & other surface features; the change in elevation over the Earth’s surface Uniformitarianism: the theory that geologic events (and others) are caused by natural processes, many of which are operating at the present time * and that the processes we see today operate in the same way today as they did in the past EX: the way a volcano operates today is the same as it did 1000 yrs ago, or 1million years ago, or 1 billion years ago ** Types of Landforms: Tectonic: developed by therearrangement of the Earth’s crust, driven by internal energy Fluvial: those developed by moving liquid water Glacial: those developed by glacial ice(solid water) Coastal: those developed by waves Eolian: those developed by wind ** Landforms and systems change, but tend to be in some form of an equilibrium state, when viewed over geologic time. Steady-state: little change, with inputs and outputs equal Dynamic Equilibrium: fluctuates around an average value, but demonstrates a trend over time Geomorphic Processes: relationship between external and internal processes and forces * Internal Processes: those processes which occur or originate within Earth’s crust; volcanism, diastrophism (mountain building), plate tectonics (massive crustal rearrangements) * External Processes: those processes which occur on the Earth’s surface; weathering & erosion by fluvial, glacial, eolian, & coastal EARTH'S INTERNAL STRUCTURE Characteristics: * arranged in concentric layers * heavier elements towards the center * each layer distinct in chemical composition or temperature * result of cooling since formation of the earth, some 4.6 billion years before present(BYBP) ** How do we know? --- only by indirect evidence; Seismic waves * by analyzing the behavior of seismic waves; their speed and direction * waves change with changes in the Tº and density of material **cooler=higher velocity; hotter=slower velocity ** density may reflect or refract the waves ** 3 types of seismic waves: P waves: push or compressio
More Less

Related notes for GEOG 2110L

Log In


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.