McAfee SECURE sites help keep you safe from identity theft, credit card fraud, spyware, spam, viruses and online scams

Home » Teaching Plate Tectonics » Transform Boundaries

Transform Plate Boundaries

Teaching
Plate
Tectonics


Transform Plate Boundaries are locations where two plates slide past one another. The fracture zone that forms a transform plate boundary is known as a transform fault. Most transform faults are found in the ocean basin and connect offsets in the mid-ocean ridges. A smaller number connect mid-ocean ridges and subduction zones.


Transform Plate Boundary

transform plate boundary


A Strike-Slip Fault is NOT a Transform Fault


Transform faults can be distinguished from the typical strike-slip faults because the sense of movement is in the opposite direction (see illustration at right). A strike-slip fault is a simple offset, however, a transform fault is formed between two different plates, each moving away from the spreading center of a divergent plate boundary. When you look at the transform fault diagram above, imagine the double line as a divergent plate boundary and visualize which way the diverging plates would be moving. A smaller number of transform faults cut continental lithosphere. The most famous example of this is the San Andreas Fault Zone of western North America. The San Andreas connects a divergent boundary in the Gulf of California with the Cascadia subduction zone. Another example of a transform boundary on land is the Alpine Fault of New Zealand. Both the San Andreas Fault and the Alpine Fault are shown on our Interactive Plate Tectonics Map.

Transform faults are locations of recurring earthquake activity and faulting. The earthquakes are usually shallow because they occur within and between plates that are not involved in subduction. Volcanic activity is normally not present because the typical magma sources of an upwelling convection current or a melting subducting plate are not present.

Contributor:
Publisher, Geology.com
 
Strike-slip fault vs transform-fault




Teaching
Plate
Tectonics


Find it on Geology.com




More from Geology.com


gem photos
100+ Gems - Photos of over 100 beautiful gems ranging from the popular to the obscure.
volcanic explosivity index
Volcanic Explosivity: Learn about some of the most explosive volcanic eruptions.
Diamonds from Coal
Biggest Misconception: Lots of people think that diamonds form from coal. Not True!
Iolite
Iolite is the gem variety of the mineral cordierite. An alternative to sapphire and tanzanite.
Sea Level Rise Map
Sea Level Rise Map: A Google map that shows where flooding will occur as sea level rises.
Tallest Mountain
Tallest Mountain: Everest has rivals in tallness, altitude and distance to the center of Earth.
Olivine
Olivine is a rock-forming mineral found in the crust, the mantle, and in some meteorites.
diatomite
Making Beer With Rocks - Do you know which fossiliferous rock is used to make beer?


© 2005-2015 Geology.com. All Rights Reserved.
Images, code and content of this website are property of Geology.com. Use without permission is prohibited. Pages on this site are protected by Copyscape.