title: Composition and Formation of Gabbro-Peridotite Hosted Seafloor Massive Sulfide Deposits from the Ashadze-1 Hydrothermal Field, Mid-Atlantic Ridge
metadata.name: dc.contributor.author
metadata.value: Firstova, Anna
metadata.lang: -
metadata.name: dc.contributor.author
metadata.value: Stepanova, Tamara
metadata.lang: -
metadata.name: dc.contributor.author
metadata.value: Cherkashov, Georgy
metadata.lang: -
metadata.name: dc.contributor.author
metadata.value: Goncharov, Alexey
metadata.lang: -
metadata.name: dc.contributor.author
metadata.value: Babaeva, Svetlana
metadata.lang: -
metadata.name: dc.date.accessioned
metadata.value: 2016-05-12T17:00:33Z
metadata.lang: -
metadata.name: dc.date.available
metadata.value: 2016-05-12T17:00:33Z
metadata.lang: -
metadata.name: dc.date.issued
metadata.value: 2016-03
metadata.lang: -
metadata.name: dc.identifier.citation
metadata.value: Minerals 2016, 6, 19; doi:10.3390/min601001
metadata.lang: -
metadata.name: dc.identifier.uri
metadata.value: http://hdl.handle.net/11701/2263
metadata.lang: -
metadata.name: dc.description.abstract
metadata.value: This paper presents mineralogical and geochemical data on seafloor massive sulfides (SMS)
  from the Ashadze-1 hydrothermal field at the Mid-Atlantic Ridge (MAR). The Ashadze-1 deposit is
  associated with the uplifted lower crust and upper mantle (oceanic core complex, OCC) of the MAR
  segment characterized by asymmetric mode of accretion. The OCC is represented by deep-seated
  gabbro-peridotite rocks exhumed on the rift valley slope along the detachment fault, during seafloor
  spreading. Hydrothermal processes in OCC environments result in different deposit composition and
  morphology compared to basalt-hosted systems. Abundant chimneys and enrichment in particular
  metals, including copper, zinc, gold, cobalt and tin are typical for this type of SMS deposit. The
  Ashadze-1 deposit is considered an example of a hydrothermal system in the initial stage of evolution
  marked by the young age of the sulfides (<7.2 kyr). The mineralogy of Ashadze-1 reflects primary
  ore-forming processes unaffected by post formation alteration. We propose a model for the primary
  ore-forming hydrothermal process in an ultramafic-hosted environment on the modern seafloor.
metadata.lang: en_GB
metadata.name: dc.language.iso
metadata.value: en
metadata.lang: en_GB
metadata.name: dc.title
metadata.value: Composition and Formation of Gabbro-Peridotite Hosted Seafloor Massive Sulfide Deposits from the Ashadze-1 Hydrothermal Field, Mid-Atlantic Ridge
metadata.lang: en_GB
metadata.name: dc.type
metadata.value: Article
metadata.lang: en_GB
resources.filename: minerals-06-00019.pdf
resources.url: https://dspace.spbu.ru/bitstream/11701/2263/1/minerals-06-00019.pdf
resources.format: Adobe PDF
resources.size: 3,62 MB