{[ promptMessage ]}

Bookmark it

{[ promptMessage ]}

March 17, 2008 - o Tectonics disruption of a planet's...

Info icon This preview shows pages 1–2. Sign up to view the full content.

View Full Document Right Arrow Icon
March 17, 2008 o Tectonics: disruption of a planet’s surface by internal stresses o Convection of the mantle creates stresses in the crust called tectonic forces o Can be global or just local o Plate tectonics may be unique to earth o Rocks act like silly putty o Behavior depends on the time scales of the stresses Long time scales => flows Short time scales => breaks o Also depends on temperature High temp => rock flows easily Low temp => rock more brittle, breaks and cracks o Erosion o Erosion is the wearing down or building up of geological features by wind, water, ice and other phenomena of planetary weather Weather is key to erosion Without weather there would be no movement of wind water and ice Colorado river continues to carve Grand Canyon Glaciers carved the Yosemite valley o Connecting erosion to formation properties Erosion requires an atmosphere What kinds of planets create and atmosphere?
Image of page 1

Info icon This preview has intentionally blurred sections. Sign up to view the full version.

View Full Document Right Arrow Icon
Image of page 2
This is the end of the preview. Sign up to access the rest of the document.

{[ snackBarMessage ]}