Dear colleagues,
We invite you to submit an abstract to our session on 09d.
Hydrothermal systems: Fluid-rock interaction, mineralogy and metal mobility.
at the Goldschmidt conference 2016, which is held in Yokohama, outskirt of Tokyo, Japan from June 26th.
(http://goldschmidt.info/2016/index).
Keynote: Mark Pearce (CSIRO)
Conveners: Jeffrey Hedenquist, Minoru Kusakabe, Weihua Liu, Kirsten Rempel, Agnes Reyes, Vincent van Hinsberg, Katy Evans.
The abstract deadline is 26 February 2016.
Session description:
Hydrothermal fluids in the Earth’s crust acquire, transport, and deposit metals. The fluids typically have a magmatic, metamorphic, connate or meteoric source and each may mix with other fluid types along their flow path. As fluids ascend from depth, circulate, interact with rock, mix with other fluids and undergo changes in temperature, pressure, composition and redox state, the host rock may be leached and various chemical components deposited as gangue and ore-bearing minerals along its flow path. The numerous potential fluid sources and capacity of hydrothermal fluids to mediate deposition of metals results in a correspondingly broad range of mineral deposits, from volcanic arc-hosted Cu-Au porphyry and epithermal deposits to amagmatic orogenic deposits and basin-related sedimentary rock-hosted deposits. Active hydrothermal systems provide the opportunity to directly sample fluids and their metal concentrations from geothermal and volcanic-hydrothermal environments. Fluid-rock interaction on the flanks of volcanoes and in summit craters causes alteration that can reduce rock strength, with fluid composition driving rheological change. Laboratory experiments and computer simulations complement studies of natural environments to build our understanding of the mechanisms and physico-chemical factors that control fluid-rock interaction, metal mobility, and ore formation. This session welcomes contributions on fluid-rock interaction and metal mobility in hydrothermal environments, including magmatic and amagmatic systems and their respective ore deposits as well as active analogues. Studies that include, among related topics, examination of secondary (hydrothermal) alteration minerals, present-day fluids and fluid inclusions, computer simulations and laboratory experiments are encouraged. This topic will complement the session on Magmatic Volatiles proposed by Shinohara et al. for the Volcanoes and Hazard theme
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Geo-mineralisation is administered by the Mineral Deposits Studies Group (UK)
(www.mdsg.or.uk)
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