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Lake Leonard : ウィキペディア英語版 | Lake Leonard
Lake Leonard is a small freshwater crater lake in Mount Leonard (also known as Leonard Kniaseff), an andesitic-to-dacitic stratovolcano complex in the Leonard Mountain Range which is located 60 km northeast of Davao City, Davao del Norte Province, Philippines. ==Origin== Volcanic activity began 1.1 million years ago in the area and a series of lava domes in the region surrounding the lake were created in about 290,000 years ago. One of the biggest of these domes collapsed leaving a caldera that in time filled with water and transformed into a freshwater lake capable of sustaining life. Solfataras (fumaroles that emits sulfuric gases) occurring on its southwest rim is evident that under this lake is a sleeping active volcano. Active solfataras, fumaroles, and hot springs are also found in the Amacan-Gopod thermal area south of the lake. The Manat thermal area is located north of Lake Leonard.
抄文引用元・出典: フリー百科事典『 ウィキペディア(Wikipedia)』 ■ウィキペディアで「Lake Leonard」の詳細全文を読む
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