コメント頂いた北の王試掘の件
https://www.japangold.com/index.php/news/2019/444-
Ikutahara Project: Kitano-o Prospect Drilling and Geophysical Programs
The Phase 1, six-drill hole program which commenced in late July has completed three holes, while two holes are ongoing and a final hole will be completed in December. In addition to drilling at the Kitano-o prospect, detailed gravity and geophysical surveys including controlled source audio-magnetotellurics (CSAMT) have been completed.
The Kitano-o prospect gravity data has delineated the location of a series of major structures including the graben margin on the eastern edge of the prospect. Several major east-west and northeast oriented gravity gradients are indicated which parallel and or mimic known mineralized trends. These gravity gradients may indicate faults or offsets in the underlying basement and are inferred to be related to plumbing of the rhyolite domes and feeder structures to the epithermal vein system at the Kitano-o prospect. [See Figures 1 and 2 for locations of the Ikutahara Project and Kitano-o prospect.]
CSAMT data collected at the Kitano-o prospect has further refined drill targeting by mapping resistive and conductive features coincident with known gravity structures and defined potential new structures. Resistive features may indicate silicification related to vein systems and rhyolite dome margins which are also prime structural locations for epithermal vein development. The current drill program at the Kitano-o prospect will test some of these structure coincident CSAMT anomalies.
6本ボーリングして云々～と
