katmai volcano造句

• During June 6 to 9, 1912, the most spectacular Alaskan eruption in recorded history and the twentieth century's largest measured volcanic eruption resulted in the formation of a large summit caldera at Katmai volcano.
• Named for St . John the Theologian, it was built soon after Perryville was founded in 1912, by survivors from the community of Katmai, Alaska, after it was destroyed in the 1912 Katmai volcano eruption.
• Katmai volcano is built on the sedimentary rocks of the Naknek Formation of Late Jurassic age, which are exposed just west of the caldera rim at an elevation of about, as well as north and southeast of the crater.
• At the end of the Kuskokwim expedition he made the first scientific observations of the Mount Katmai volcano, and the valley that later became known as the " Valley of Ten Thousand Smokes . " During these expeditions he encountered Native Americans, Aleuts, traders, missionaries, prospectors, whiskey smugglers and various con artists.