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・ Grandham
・ Grandhi Mallikarjuna Rao
・ Grandhi Srinivas
・ Grandhi Venkata Reddy Naidu
・ Grandhotel
・ Grandhotel (novel)
・ Grande Rivière des Vieux-Habitants
・ Grande Rivière du Nord
・ Grande Rocheuse
・ Grande Rochère
・ Grande Rock
・ Grande Ronde
・ Grande Ronde Aquifer
・ Grande Ronde Hospital
・ Grande Ronde River
Grande Ronde Valley
・ Grande Roue de Paris
・ Grande Rousse
・ Grande Ruine
・ Grande Région
・ Grande Saline
・ Grande Saline, Saint Barthélemy
・ Grande Sauldre
・ Grande Seca
・ Grande Semaine d'Aviation de la Champagne
・ Grande Sertão Veredas National Park
・ Grande Sido
・ Grande sonate 'Les quatre âges'
・ Grande sonnerie
・ Grande Sports World


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Grande Ronde Valley : ウィキペディア英語版
Grande Ronde Valley

The Grande Ronde Valley is a valley in Union County in northeastern Oregon, United States. It is surrounded by the Blue Mountains, and is drained by the Grande Ronde River. La Grande is its largest community. The valley is long, north to south, from Pumpkin Ridge to Pyles Canyon, and wide, east to west, from Cove to the Grande Ronde River's canyon. Its name, fittingly, means "great circle".
==Geology==

The Grande Ronde Valley is part of the Columbia River Plateau. The Columbia River Plateau was created by a series of basalt flood eruptions. These happen when a long crack in the Earth's crust spews floods of lava. The molten rock then hardens and creates layers of basalt. The Grande Ronde Valley floor began to sink from this plateau at a rate of about .07-.18 millimeters per year about nine million years ago.〔(【引用サイトリンク】title= Recent Faculty and Student Geology Research )

抄文引用元・出典: フリー百科事典『 ウィキペディア(Wikipedia)
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