利用氣體成份監測台灣北部潛在的岩漿活動
Other Title
Geochemical surveillance of fumaroles and bubble gases for
the potential magma activity in N. Taiwan
the potential magma activity in N. Taiwan
Date Issued
2001
Date
2001
Author(s)
楊燦堯
DOI
892116M002040
Abstract
It is a three-year monitoring project on
potential magma activity by geochemical
method in northern Taiwan. We have focused
on the gas sources of the Tatun Volcano Group in the first year. Helium, carbon and
nitrogen isotopic ratios results show that
large amount of mantle derived components
are involved in the gas samples in this area.
The highest helium isotopic ratio is obtained from Da-Yiou-Keng.. Up to 90% of
magmatic component was estimated for its gas sources. It implies that there may be
magma reservoir underneath Tatun Volcano area. However, no significant anomalous
variations of helium isotopic ratios of the gas
samples have been observed during last two years. It suggests that the de-gassing system
in this area is relatively steady in the period.
Subjects
Tatun Volcanoes
Kueishantao
fumaroles
hot springs
surveillance
Publisher
臺北市：國立臺灣大學地質科學系暨研究所
Type
report
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