Gravity Exploration Inferring the Source Granite of the NMC Moland Mine, Jecheon, Chungbuk

Abstract

NMC Moland mine, which is classified as a contact replacement or skarn deposit, has been interpreted to have been formed by Daebo igneous activity which intruded into the Joseon Supergroup, because it is quite closely located to Jecheon granite. However, an alternative interpretation was recently suggested that the mine could be related with the hydrothermal fluid originated from Cretaceous granitic rocks, bringing about skarnization and Mo mineralization. Here we present an interpretation on the source granite of the mine based on the gravity exploration: the gravity anomaly, unlike the surface geology, shows that the Muamsa granite could be the related granite of the mine, because its hidden subsurface structure is expected to be more widely extended to surrounding area of the mine and deeper than the Jecheon granite.

Gravity Anomaly around Boam Deposit, Uljin: Implications on Economic Geology

“…Shin et al, 2014). 따라서 이 번 중력탐사 결과는 광상 주변에서 관찰되지 않는 잠두 화성암체의 존재를 규명하고, 생산성화강암을 찾기 위한 지구화학적 벡터링 연구에 활용될 수 있을 것으로 사료된다.…”