| Title | Clay mineralogical study of indurated seafloor sediment samples from the Lihir area, Papua New Guinea |
| Download | Downloads |
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| Licence | Please note the adoption of the Open Government Licence - Canada
supersedes any previous licences. |
| Author | Obina, B; Percival, J B ; Hunt, P A |
| Source | Geological Survey of Canada, Current Research (Online) no. 2001-D21, 2001, 22 pages, https://doi.org/10.4095/212175  Open Access |
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| Year | 2001 |
| Publisher | Natural Resources Canada |
| Document | serial |
| Lang. | English |
| Media | paper; on-line; digital; CD-ROM |
| Related | This publication is contained in Current Research 2001,
winter release |
| File format | pdf |
| Area | Lihir Island; Papua New Guinea |
| Lat/Long WENS | 146.0000 154.0000 -1.0000 -7.0000 |
| Subjects | mineralogy; sedimentology; clay analyses; clay mineralogy; marine clays; sea sediment geochemistry; seamounts; submarine hydrothermal vents; hydrothermal systems; smectite; calcite; hydrothermal
alteration; petrographic analyses; x-ray diffraction analyses; scanning electron microscope analyses; electron probe analyses; Conical Seamount; Edison Seamount; Tubaf Seamount |
| Illustrations | sketch maps; bathymetric profiles; images; photomicrographs; tables |
| Released | 2001 01 01 |
| Abstract | Detailed studies of samples collected from two seafloor cruises to the Lihir area in Papua New Guinea continue. In 1994, a detailed study of the Tabar-Lihir-Tanga-Feni island chain in the New Ireland
fore-arc basin was con- ducted aboard the R/V Sonne (cruise SO-94). The discovery of four new seamounts led to further investigations in 1998 (cruise SO-133). Edison Seamount was determined to be hydrothermally active and marked a new type of setting
on the seafloor for shallow-marine hot springs. Conical Seamount, a dormant cone, is characterized by dis- tinctive epithermal-style gold mineralization. Two unusual indurated sediment samples from Conical Seamount were the focus of this study. They
are com- posed of amorphous silica/glass and/or iron oxide layers (crusts), iron-bearing smectite and calcite. These miner- als occur in a low-temperature hydrothermal environment, indicating that these samples are the end product of submarine
hydrothermal alteration and sea-water/rock interactions. |
| GEOSCAN ID | 212175 |
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