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The central Snake River plain is similar to the eastern plain but differs by having thick sections of interbedded lacustrine (lake) and fluvial (stream) sediments, including the Hagerman fossil beds. Island Park and Yellowstone Calderas formed as the result of enormous rhyolite ignimbrite eruptions, with single eruptions producing up to 600 ...
The Snake River Plain ecoregion is a Level III ecoregion designated by the United States Environmental Protection Agency (EPA) in the U.S. states of Idaho and Oregon.It follows the Snake River across Idaho, stretching roughly 400 miles (640 km) from the Wyoming border to Eastern Oregon in the xeric intermontane west.
The Snake River Plain is the largest area without mountains, but it still features rugged terrain, being crisscrossed by canyons formed by the Snake River and its tributaries. [1] [30]: 604–606 Due to the rain shadow effect of the Cascades, precipitation as a whole is scant, averaging 14 inches (360 mm) across the entire watershed. Most ...
Wilson Butte Cave is located on the Snake River plain in Jerome County, northeast of Twin Falls and southeast of Shoshone, Idaho.It is an archeological site listed on the National Register of Historic Places and maintained by the Bureau of Land Management (BLM).
The eastern Snake River Plain is a topographic depression that cuts across Basin and Range Mountain structures, more or less parallel to North American Plate motion. Beneath more recent basalts are rhyolite lavas and ignimbrites that erupted as the lithosphere passed over the hotspot.
The Snake River Aquifer is a large reservoir of groundwater underlying the Snake River Plain in the southern part of the U.S. state of Idaho. Most of the water in the aquifer comes from irrigation recharge. Measuring about 400 miles (640 km) from east to west, it is an important water source for agricultural irrigation in the Plain.
The Snake River Plain of 4 million years ago in the Pliocene differed greatly from today. With respect to climate, there was much lower temperature seasonality and the humidity was much higher. [ 1 ] Much of the western Plain was submerged under the waters of Lake Idaho, which encompassed an area as large as Lake Ontario and covered the low ...
Melon Gravel on the Snake River plain at Hagerman, ID. Although the peak of the flood lasted a few weeks at most, erosion at Red Rock Pass continued for a few years before water ceased to spill over. The flood drained the top 351 feet (107 m) of Lake Bonneville, which constituted about 1,200 cubic miles (5,000 km 3 ) of water, and lowered the ...