Study on the Igneous Activity and Mineralization In the Vicinity of the Tongnae-Eonyang, Pusan

부산시일원(釜山市一圓)(언양(彦陽)-동래지역(東萊地域))의 화성활동(火成活動)과 광화작용(鑛化作用)에 관한 연구(硏究)

The region is composed of Cretaceous volcanic and sedimentary rocks; andesites and granites, It is clarified by the writers that most formations ever known as andesites are not igneous origin but hornfelsic sedimentary rocks. Refering to this fact, broad areas in the south-eastern part of the Kyeong-Sang Namdo which are colored as andesites in the geologic maps scale 1/50,000, published by Geological Survey of Korea should be rechecked. In this area, four granite plutons are isolated by the hornfelsic sedimentary formation, andesites and alluvium. Each plutons are zoned by the lithological facies.