Special issue of Economic Geology demonstrates GNS's key role unveiling the genesis story of critical metals
Last week Economic Geology published an online special issue on the results of the International Ocean Discovery Program (IODP) Expedition 376 to explore the dynamic hydrothermal system of Brothers volcano in the Kermadec arc.
Notably, GNS Science plays a prominent role in this edition, with numerous papers co-authored by GNS experts, including the Chief Editor, Principal Scientist Cornel de Ronde.
The issue includes 11 papers detailing the latest analyses and findings from the 2018 expedition, where researchers drilled an unprecedented 1,595 meters into the submarine hydrothermally active Brothers volcano, including the longest hole of 450 meters — equivalent to the height of the Empire State Building.
Volume 118 / Number 7
This ground-breaking research unveils the intricate processes behind the deposition of critical metals onto and below the sea floor, shedding light on their pathways through the ocean crust. Ancient equivalents of modern seafloor hydrothermal systems like that at Brothers can be uplifted by tectonic forces where they are subsequently mined for their metal-rich minerals.
Dr de Ronde said Brothers volcano provides the genesis story of metals such as copper, gold and zinc – pivotal for modern society in infrastructure development, technology, global trade, and energy storage.
Understanding the seafloor mineralisation of these critical metals has scientific and economic value with implications for security of supply and for ‘green’ technologies in our march towards a net zero carbon economy.
“And any research into seafloor hydrothermal mineral deposits will focus on current mining practices and future extraction methods. For New Zealand, this research hints at a potentially significant reserve of critical metals in our own backyard – a resource we have not historically considered available to us.”
The print version of the special issue will appear as the November edition of Economic Geology, the premiere journal in its field.
“This volume represents the culmination of a lot of hard work by many people. I am sure it will be a popular and useful issue, packed with a wide range of information about the hydrothermal system at Brothers volcano," Dr de Ronde said.
The IODP is an international marine research collaboration with huge interest and investment from multiple international partners including the US, Japan, Australia, China, India and Europe.
In addition, more than $100 million has been invested into 14 research voyages to explore the seafloor geology of the Kermadec arc volcanoes, most of which GNS scientists accompanied and/or led.
“This research underscores GNS scientists' capability to contribute significantly to global scientific endeavours, illustrating to the world how well we can punch above our weight.”
The special issue of Economic Geology can be viewed here(external link).