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The geological map of studied area showing the lava unit distribution and sampling location.

The geological map of studied area showing the lava unit distribution and sampling location.

Source publication
Conference Paper
Full-text available
Andesitic lavas in Kalibawang area are part of Old Andesite Formation (OAF). These lavas represent the first cycle of volcanism in Sunda arc, which marked the earliest development of Sunda arc. The samples were collected from three locations in the east of Kulon Progo mountains. Detailed petrographic observation is used to characterize the sample...

Context in source publication

Context 1
... samples were collected from three locations in the east of Kulon Progo mountains (Fig. 1). The samples were taken at the upper and lower part of the outcrop, except in the third location. The dyke remnant in third location have homogenous texture and composition. The thin section preparation is conducted at Central Laboratory at Geological Engineering Department of Gadjah Mada University. Petrographic analysis of the ...

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