Warning: Use of undefined constant referer - assumed 'referer' (this will throw an Error in a future version of PHP) in /usr/home/essaywo/public_html/essays on line 102

Warning: Use of undefined constant host - assumed 'host' (this will throw an Error in a future version of PHP) in /usr/home/essaywo/public_html/essays on line 105

Warning: Cannot modify header information - headers already sent by (output started at /usr/home/essaywo/public_html/essays:102) in /usr/home/essaywo/public_html/essays on line 106

Warning: Cannot modify header information - headers already sent by (output started at /usr/home/essaywo/public_html/essays:102) in /usr/home/essaywo/public_html/essays on line 109
Plate Tectonics - Papers

Plate Tectonics

The main features of are:
The Earth's surface is covered by a series of crustal plates.
The ocean floors are continually, moving, spreading from the center, sinking at the edges, and being regenerated.
Convection currents beneath the plates move the crustal plates in different directions.
The source of heat driving the convection currents is radioactivity deep in the Earths mantle.
Advances in sonic depth recording during World War II and the subsequent development of the nuclear resonance type magnometer (proton-precession magnometer) led to detailed mapping of the ocean floor and with it came many observation that led scientists like Howard Hess and R. Deitz to revive Holmes' ...

Want to read the rest of this paper?
Join Essayworld today to view this entire essay
and over 50,000 other term papers

underwater mountain ranges have a deep trench which bisects the length of the ridges and in places is more than 2000 meters deep. Research into the heat flow from the ocean floor during the early 1960s revealed that the greatest heat flow was centered at the crests of these mid-oceanic ridges. Seismic studies show that the mid-oceanic ridges experience an elevated number of earthquakes. All these observations indicate intense geological activity at the mid-oceanic ridges.

Geomagnetic Anomalies

Peridically, the Earth's magnetic field reverses. New rock formed from magma records the orientation of Earth's magnetic field at the time the magma cools. Study of the sea floor with magnometers revealed "stripes" of alternating magnetization parallel to the mid-oceanic ridges. This is evidence for continuous formation of new rock at the ridges. As more rock forms, older rock is pushed farther away from the ridge, producing symmetrical stripes to either side of the ridge. In the ...

Get instant access to over 50,000 essays.
Write better papers. Get better grades.

Already a member? Login

CITE THIS PAGE:

APA
MLA
Chicago
Turabian

Plate Tectonics. (2005, March 25). Retrieved October 3, 2025, from http://www.essayworld.com/essays/Plate-Tectonics/24273

"Plate Tectonics." Essayworld.com. Essayworld.com, 25 Mar. 2005. Web. 3 Oct. 2025. <http://www.essayworld.com/essays/Plate-Tectonics/24273>

"Plate Tectonics." Essayworld.com. March 25, 2005. Accessed October 3, 2025. http://www.essayworld.com/essays/Plate-Tectonics/24273.

JOIN NOW

Join today and get instant access to this and 50,000+ other essays

PAPER DETAILS

Added: 3/25/2005 03:55:27 PM
Category: Science & Nature
Type: Premium Paper
Words: 819
Pages: 3

Save |

Report

SHARE THIS PAPER

SAVED ESSAYS

Save and find your favorite essays easier