Petersen_et_al.,_2005.pdf (3.1 MB)
Shallow drilling of seafloor hydrothermal systems using the BGS rockdrill: Conical seamount (New Ireland fore-arc) and PACMANUS (Eastern Manus Basin), Papua New Guinea
journal contribution
posted on 2023-05-16, 17:43 authored by Petersen, S, Herzig, PM, Kuhn, T, Franz, L, Hannington, MD, Monecke, T, John GemmellJohn GemmellFrom September to October 2002, shallow drilling, using the submersible (5 m) Rockdrill of the British Geological Survey and the German R/V Sonne revealed critical information on the subsurface nature of two distinct hydrothermal systems in the New Ireland fore-arc and the Manus Basin of Papua New Guinea, Drilling at Conical Seamount significantly extends the known surface extent of the previously discovered vein-style gold mineralization (up to 230 g/t Au) at this site. Drilling the conventional PACMANUS volcanic-hosted massive sulfide deposit recovered complexly textured massive sulfide with spectacular concentrations of gold in several core sections including 0.5 m 28 g/t Au, 0.35 m 30 g/ t Au, and 0.20 m 57 g/t Au. Shallow drilling is a fast and cost efficient method that bridges the gap between surface sampling and deep (ODP) drilling and will become a standard practice in the future study of seafloor hydrothermal systems and massive sulfide deposits. Copyright © Taylor & Francis Inc.
History
Publication title
Marine Georesources & GeotechnologyVolume
23Pagination
175-193ISSN
1064-119XDepartment/School
School of Natural SciencesPublisher
Taylor & Francis Inc.Place of publication
USARepository Status
- Restricted