Potential linkage between thermal degradation and mineral magnetic properties of Cu-rich chimneys in the Southwest Pacific

DC Field Value Language
dc.contributor.author 김원년 -
dc.contributor.author 문재운 -
dc.contributor.author 이경용 -
dc.date.accessioned 2020-07-16T03:51:30Z -
dc.date.available 2020-07-16T03:51:30Z -
dc.date.created 2020-02-11 -
dc.date.issued 2014-09-26 -
dc.identifier.uri https://sciwatch.kiost.ac.kr/handle/2020.kiost/26017 -
dc.description.abstract Deep-sea hydrothermal vents (hereafter chimneys) are commonly found in the new crust forming divergent plate boundaries. Related to the chimney cycle from birth to death, it is hard to define the growth stage of the chimney due to a brief life span venting hydrothermal plume. Here we try to categorize the mineral magnetic properties of the chimneys according to their venting fluid-temperatures. Hydrothermal sulfide deposits in the Southwest Pacific were explored in 2012 and chimneys were collected using remotely operated vehicle (ROV) and Grab with AV camera (GTV). In the present study, mineral magnetic properties of three Cu-rich chimneys were measured: a high-temperature chimney showing a venting fluid-temperature of about 200°C (ROV01) a low-temperature chimney of about 80°C (GTV01) and an inactive chimney (ROV02). The chimneys were sliced to ~1 cm intervals from core to outer. Magnetic properties of ROV01 are dominated by pyrrhotite, except for the most outer that experienced severe oxidation. Concentration and grain-size of pyrrhotite are relatively low and fine. In the GTV01, pyrrhotite, dominant in the core, is gradually mixed with hematite toward the outer of the chimney due to secondary oxidation.ife span venting hydrothermal plume. Here we try to categorize the mineral magnetic properties of the chimneys according to their venting fluid-temperatures. Hydrothermal sulfide deposits in the Southwest Pacific were explored in 2012 and chimneys were collected using remotely operated vehicle (ROV) and Grab with AV camera (GTV). In the present study, mineral magnetic properties of three Cu-rich chimneys were measured: a high-temperature chimney showing a venting fluid-temperature of about 200°C (ROV01) a low-temperature chimney of about 80°C (GTV01) and an inactive chimney (ROV02). The chimneys were sliced to ~1 cm intervals from core to outer. Magnetic properties of ROV01 are dominated by pyrrhotite, except for the most outer that experienced severe oxidation. Concentration and grain-size of pyrrhotite are relatively low and fine. In the GTV01, pyrrhotite, dominant in the core, is gradually mixed with hematite toward the outer of the chimney due to secondary oxidation. -
dc.description.uri 1 -
dc.language English -
dc.publisher UMI2014 -
dc.relation.isPartOf Harvesting Seabed Minerals Resources in Harmony with Nature -
dc.title Potential linkage between thermal degradation and mineral magnetic properties of Cu-rich chimneys in the Southwest Pacific -
dc.type Conference -
dc.citation.conferencePlace US -
dc.citation.endPage 297 -
dc.citation.startPage 295 -
dc.citation.title Harvesting Seabed Minerals Resources in Harmony with Nature -
dc.contributor.alternativeName 김원년 -
dc.contributor.alternativeName 문재운 -
dc.contributor.alternativeName 이경용 -
dc.identifier.bibliographicCitation Harvesting Seabed Minerals Resources in Harmony with Nature, pp.295 - 297 -
dc.description.journalClass 1 -
Appears in Collections:
Marine Resources & Environment Research Division > Ocean Georesources Research Department > 2. Conference Papers
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