The Action is at The Edges - Public Domain image, National Parks Galle...
Earth’s outer shell is broken into tectonic plates that move relative to one another. The plates rip apart at divergent plate boundaries, crash together at convergent plate boundaries, and slide past each other... More
Transform Plate Boundaries—Pinnacles National Park, California
Located near the San Andreas Fault along the boundary of the Pacific Plate and the North American Plate, is an excellent example of tectonic plate movement. Some 23 million years ago multiple volcanoes erupted,... More
West Coast Tectonic Evolution—Today
The Cascades are the modern volcanic arc developing where the Juan de Fuca Plate subducts beneath the North American Plate. The Sierra Nevada are the eroded remnants of the volcanic arc developed when the Faral... More
![West Coast Tectonic Evolution—Today [3 of 3]](https://cache.getarchive.net/Prod/thumb/cdn2/L3Bob3RvLzIwMTkvMDEvMDEvd2VzdC1jb2FzdC10ZWN0b25pYy1ldm9sdXRpb250b2RheS0zLW9mLTMtNzgxOTZhLTEwMjQuanBn/40/42/webp "West Coast Tectonic Evolution—Today [3 of 3]")
West Coast Tectonic Evolution—Today [3 of 3]
The Cascades are the modern volcanic arc developing where the Juan de Fuca Plate subducts beneath the North American Plate. The Sierra Nevada are the eroded remnants of the volcanic arc developed when the Faral... More
NPS Landscapes Developed at Transform Plate Boundaries
Shaded relief map of United States, highlighting National Park Service sites at Transform Plate Boundaries. Letters are abbreviations for NPS sites.
Greater Pacific Northwest—Three Types of Plate Boundaries and a Hotspo...
The Yellowstone Hotspot track is superimposed on other tectonic provinces of the Pacific Northwest. The hotspot first surfaced 17 million years ago as massive outpourings of fluid basalt lava in the Columbia Pl... More