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The Bruneau-Jarbidge volcanic field, also known as the Bruneau-Jarbidge eruptive center [1] is located in present-day southwest Idaho. The volcano erupted during the Miocene , between ten and twelve million years ago, spreading a thick blanket of ash in the Bruneau-Jarbidge event .
Big Southern Butte is the largest and youngest (300,000 years old) of three rhyolitic domes formed over a million years near the center of the Eastern Snake River Plain in the U.S. state of Idaho. [5] It is one of the largest volcanic domes on earth. [4]
Mount Lindesay (New South Wales), Australia; is part of the remnants of the Nandewar extinct volcano that ceased activity about 17 Ma after 4 million years of activity. Oxaya Ignimbrites, northern Chile (around 18°S); 19 Ma; 3,000 cubic kilometers (720 cu mi) of tephra. [4] Pemberton Volcanic Belt was erupting about 21 to 22 Ma. [85]
The Challis Arc was an Eocene volcanic field that stretched from southwestern British Columbia through Washington to Idaho, United States. [1] The volcanic field extended between 42 and 49 degrees north latitude and was about 1500 kilometers in length. It exhibited volcanic activity for about 10 million years. [2] Remnants of the Challis Arc ...
Columbia River Basalt Province: Yellowstone hotspot sets off a huge pulse of volcanic activity, the first eruptions were near the Oregon-Idaho-Washington border. Columbia River and Steens flood basalts, Pueblo, and Malheur Gorge-region, Pueblo Mountains , Steens Mountain , Washington, Oregon, and Idaho; most vigorous eruptions were from 14 to ...
The Hell's Half Acre lava plain is located in Bingham and Bonneville counties in the state of Idaho. The site is about 150 square miles (390 km 2) in size. [1] The area where a former lava lake existed is marked by a 875-yard (800 m) long by 328-yard (300 m) wide depression near the summit of the lava field. [7]
The buttes rise about 800 feet (250 m) above the surrounding Snake River plain and are late Pleistocene in age, dating to approximately 10,000 YBP (Years Before Present). The South Menan Butte is currently in private hands, however North Menan Butte is publicly owned and has been designated as a National Natural Landmark and a Research Natural ...
The average household size was 2.86 and the average family size was 3.36. In Teton Valley, the population was widely distributed with 31.80% under the age of 18, 8.10% from 18 to 24, 33.80% from 25 to 44, 18.90% from 45 to 64, and 7.50% who were 65 years of age or older. The median age was 36 years. For every 100 females there were 113.4 males.