Malheur Butte is an extinct volcano located in Malheur County, Oregon. Between 20 and 15 million years ago, the region from north-central Washington to northeastern California experienced a series of volcanic eruptions and basalt lava floods that covered thousands of square miles. These ancient lava floods often dammed streams, creating lakes and swamps that may have lasted for millions of years before filling with sediment or draining as erosion slowly lowered their outlets. The western Snake River plain contained many such lakes, and geologists believe that between 8 and 2 million years ago, "Lake Idaho" covered much of central eastern Oregon. Sediment deposited in this lake once covered Malheur Butte, and during the last 2 million years the Malheur River and other eroding forces slowly
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| - Butte Malheur (fr)
- Malheur Butte (en)
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| - Malheur Butte is an extinct volcano located in Malheur County, Oregon. Between 20 and 15 million years ago, the region from north-central Washington to northeastern California experienced a series of volcanic eruptions and basalt lava floods that covered thousands of square miles. These ancient lava floods often dammed streams, creating lakes and swamps that may have lasted for millions of years before filling with sediment or draining as erosion slowly lowered their outlets. The western Snake River plain contained many such lakes, and geologists believe that between 8 and 2 million years ago, "Lake Idaho" covered much of central eastern Oregon. Sediment deposited in this lake once covered Malheur Butte, and during the last 2 million years the Malheur River and other eroding forces slowly (en)
- La butte Malheur, en anglais Malheur Butte, est un ancien volcan qui s'élève dans la partie orientale de l'État de l'Oregon aux États-Unis. Le butte Malheur fait partie de la chaîne volcanique qui couvre le nord-ouest des États-Unis, depuis la Californie au sud, à l'État de Washington au nord. Bien que la butte Malheur soit inactive depuis des millions d'années, le comté de Malheur, dans lequel est situé ce volcan, profite de l'activité géothermique souterraine permanente sous forme de sources thermales. (fr)
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| - Malheur Butte is an extinct volcano located in Malheur County, Oregon. Between 20 and 15 million years ago, the region from north-central Washington to northeastern California experienced a series of volcanic eruptions and basalt lava floods that covered thousands of square miles. These ancient lava floods often dammed streams, creating lakes and swamps that may have lasted for millions of years before filling with sediment or draining as erosion slowly lowered their outlets. The western Snake River plain contained many such lakes, and geologists believe that between 8 and 2 million years ago, "Lake Idaho" covered much of central eastern Oregon. Sediment deposited in this lake once covered Malheur Butte, and during the last 2 million years the Malheur River and other eroding forces slowly exposed and shaped today's landmark. Although Malheur Butte has been inactive for millions of years, Malheur County is still alive with geothermal activity in the form of hot springs. The rock is slightly over 100 meters higher than the surrounding plains and the peak is 790 meters above sea level. (en)
- La butte Malheur, en anglais Malheur Butte, est un ancien volcan qui s'élève dans la partie orientale de l'État de l'Oregon aux États-Unis. Le butte Malheur fait partie de la chaîne volcanique qui couvre le nord-ouest des États-Unis, depuis la Californie au sud, à l'État de Washington au nord. Ce volcan inactif ne doit pas son nom en raison d'une quelconque catastrophe éruptive. Sa dénomination provient de la toponymie locale (rivière Malheur, comté de Malheur, lac Malheur) qui remonte au temps des trappeurs canadiens français qui parcouraient la région en quête de peaux de castor. Un important stock de fourrure fut dérobé par les Amérindiens et les trappeurs nommèrent cet endroit ainsi. Bien que la butte Malheur soit inactive depuis des millions d'années, le comté de Malheur, dans lequel est situé ce volcan, profite de l'activité géothermique souterraine permanente sous forme de sources thermales. De nos jours, la ville de Vale, siège du comté, utilise l'énergie géothermique grâce à son usine de captation des sources chaudes, afin d'utiliser cette source énergétique unique dans toute la région. Le volcan fut érodé avec le temps, notamment par les eaux de la rivière Malheur qui passe en contrebas de son cône volcanique. (fr)
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| - POINT(-117.08516693115 44.010997772217)
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