کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
4716875 1638728 2010 8 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Rapid development of the great Millennium eruption of Changbaishan (Tianchi) Volcano, China/North Korea: Evidence from U–Th zircon dating
موضوعات مرتبط
مهندسی و علوم پایه علوم زمین و سیارات ژئوشیمی و پترولوژی
پیش نمایش صفحه اول مقاله
Rapid development of the great Millennium eruption of Changbaishan (Tianchi) Volcano, China/North Korea: Evidence from U–Th zircon dating
چکیده انگلیسی

The Changbaishan (Tianchi) volcano extending across the border of northeast China and North Korea erupted ~ 100 km3 peralkaline rhyolites around 1000 AD. This Millennium eruption of the Changbaishan volcano is one of the two largest explosive eruptions in the past 2000 years. Here we report the results of uranium–thorium dating of zircons from the Changbaishan volcanic rocks. Our data indicate that the rhyolitic magmas were stored in the crust for only 8.2 ± 1.2 ka prior to eruption. Based on titanium-in-zircon geothermometer and alkali feldspar-glass geothermometer, the rhyolitic magmas were formed at a relatively low temperature (~ 740 ± 40 °C). This storage time is very short compared with other large volume catastrophic silicic eruptions. This work demonstrates that peralkaline rhyolitic magmas from the Changbaishan volcano can develop into a catastrophic eruptive phase quite quickly.

Research Highlights
► Changbaishan volcano had a huge (magnitude 7) explosive eruption in ~ 1000 AD.
► Zircons from the huge Millennium eruption are only 9000 years old.
► Magma storage time for the huge Millennium eruption is short (8000 years).
► Magma temperature was low (740 °C).
► The Changbaishan volcano is still a dangerous volcano.

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Lithos - Volume 119, Issues 3–4, October 2010, Pages 289–296
نویسندگان
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