Whole-rock and sulfide lead-isotope data from the hydrothermal JADE field in the Okinawa back-arc trough

P. Halbach, W. Hansmann, V. Köppel, B. Pracejus

Research output: Contribution to journalArticle

30 Citations (Scopus)

Abstract

The mineralization of the active hydrothermal JADE field resembles in many aspects the Kuroko-type mineralization. The JADE field is located in a back-arc graben and is associated with a bimodal volcanism. Lead isotope data from igneous rocks, sediments, and ores further emphasize the similarities with the Kuroko ores and suggest that both sediments and volcanic rocks contributed comparable amounts of lead to the deposit. When compared to the sediments, a much larger volume of volcanic rocks must have contributed lead to the deposit, because of the considerably lower lead concentration of volcanic rocks. In contrast to the crustal type lead of the JADE field and the Kuroko-type sulfide deposits the lead isotope signatures of VMS-type deposits at mid-ocean ridges is distinctly different. In the absence of a sedimentary cover it reflects the composition of the mantle source, whereas in the presence of a sedimentary cover it is either a mixture of mantle and sedimentary lead or it may even be completely dominated by the latter.

Original languageEnglish
Pages (from-to)70-78
Number of pages9
JournalMineralium Deposita
Volume32
Issue number1
Publication statusPublished - 1997

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lead isotopes
lead isotope
troughs
Volcanic rocks
Isotopes
sulfides
volcanic rock
trough
Deposits
arcs
deposits
Rocks
sulfide
rocks
volcanology
Sediments
sediments
rock
mineralization
sediment

ASJC Scopus subject areas

  • Geochemistry and Petrology
  • Geophysics

Cite this

Whole-rock and sulfide lead-isotope data from the hydrothermal JADE field in the Okinawa back-arc trough. / Halbach, P.; Hansmann, W.; Köppel, V.; Pracejus, B.

In: Mineralium Deposita, Vol. 32, No. 1, 1997, p. 70-78.

Research output: Contribution to journalArticle

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