Remelting the Gondwanan Mantle
H.J.B. Dick1,2, H. Zhou1, C., J.J. Standish2, C. Gao2,1, and H. Marschall1
the 2013 activities of the Oceanic Detachments InterRidge Working Group.
(1) Convening a topical session at the 2013 AGU Fall Meeting;
N. Le Bris 31/05/14
The InterRidge Long-Range Exploration Working Group (LREWG) made enormous headway in scoping both the scientific drivers for and the technological requirements of long-range exploration of the spreading axes. The resulting report (see http://www.interridge.org/files/interridge/LREWG_Report_Final_web_0.pdf) highlighted several regions of the world´s oceans which, for many ridge-related scientific disciplines, it would be important to explore thoroughly and on a large scale.
The pilot Solwara 1 project could start operations in 2012. The vent biology community is closely watching this world-first and worries about the consequences. Helen Rosenbaum wrote a very nice and comprehensive report on the subject, including economics and biology. This report can be downloaded from http://stoplynas.org/wp-content/uploads/2011/11/Out-Of-Our-Depth.pdf. Another article more generally about mining the ocean floor in the Pacific can be aceessed at: http://www.deepseaminingoutofourdepth.org/
The Seafloor Mineralization Working Group was renewed for a second term at the last InterRidge Steering Committee meeting in San Francisco in December 2011. Interest in the mineralisation resources at midocean ridges has continued unabated with the price of metals such as copper, gold and silver near historic highs and nations beginning to look at options for exploration of seafloor areas for polymetallic sulfide resources in “the area” under the regulations of the International Seabed Authority (ISA).