Study on Source of Lava Flows Forming the Manjanggul Lava Tube
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Publication Date
September 2009
Abstract
The lava flows forming the Manjanggul lava tube are commonly said to have a potential source from the Geomunoreum scoria cone. We inferred the source of lava flows with the Manjanggul lava tube, based on many studies about lava tubes within lava flows of active volcano in the world. We made a lava flow field map from lithofacies, features and latitude of lava surfaces in the northeastern part of Jeju Island, and then examined closely the distribution and mutual relation of lava tubes in each lava flow field. As result, the Geomunoreum lava tube system is divided into a series of master tubes(Utsanjeungul, Bukoreumgul, Daerimdonggul, Manjanggul, Gimnyeonggul, Yongcheondonggul and Dangcheomuldonggul lava tube), a complicated networks of small tubes(Bengdwigul lava tube), and a series of unitary tubes(Gimyeongbilemotgul~Gaeusaemgul lava tube) in Geomunoreum lava flows. Particularly a canyon, 2km in length to NNE direction from the Geomunoreum scoria cone, is interpreted to be collapse trench of lava tube roof that belongs to an upflow part of the master tube in the Geomunoreum lava tube system, according to the location and direction. Accordingly, the source of lava flows, forming the Manjanggul lava tube, is the Geomunoreum scoria cone.
Keywords
Lava Flow Map, Geomunoreum Lava Tube System, Master Tube Line, Collapse Trench, Geomunoreum Scoria Cone
Document Type
Article
Notes
The Journal of the Petrological Society of Korea, Vol. 18, no. 3 (2009-09-30).
Identifier
SFS0072505_00001
Recommended Citation
Ahn, Ung-San and Hwang, Sang-Koo, "Study on Source of Lava Flows Forming the Manjanggul Lava Tube" (2009). KIP Articles. 5257.
https://digitalcommons.usf.edu/kip_articles/5257