Abstract
A plug of parataxitically welded tuff, with an elliptical (700 × 400 m) cross section, crops out in Weolseong district, Republic of Korea. It intrudes late Cretaceous granodiorite and extrusive tuffs of the Chisulryoung Volcanic Formation and displays a steeply inclined welding foliation, concordant with the intrusive contacts, and a subvertical stretching lineation. These fabrics are interpreted as resulting from laminar shearing in a boundary layer during deposition of the tuff by agglutination along the walls of a vent which served as a feeder for extrusive ignimbrites.
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Reedman, A.J., Park, K.H., Merriman, R.J. et al. Welded tuff infilling a volcanic vent at Weolseong, Republic of Korea. Bull Volcanol 49, 541–546 (1987). https://doi.org/10.1007/BF01080448
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DOI: https://doi.org/10.1007/BF01080448