Carbon and Life in Deep Seafloor Rocks: International Atlantis Massif Expedition

During a 6-week expedition in the Atlantic Ocean, an international team of scientists will explore the Atlantis Massif, a prominent, nearly 4,000 meter high underwater mountain which is part of the world's longest mountain chain.

An international team of scientists will sail from Southampton, UK, on board the British Royal Research Vessel James Cook. During a 6-week expedition in the Atlantic Ocean, departing 26 October 2015, the team will explore the Atlantis Massif, a prominent, nearly 4,000 meter high underwater mountain which is part of the world's longest mountain chain.

Led by Co-Chief Scientists Gretchen Früh-Green (ETH Zurich, Switzerland) and Beth Orcutt (Bigelow Laboratory for Ocean Sciences, USA), both part of DCO’s Deep Life Community, the team will collect cores of rocks using seabed rock drills. The plan is to drill at 11 sites in water depths of 720 to 1,770 meters and to recover cores between 50 and 70 meters in length.

“Scientifically the sea bed is remarkable because the Atlantis Massif is made up of rocks from the Earth's mantle”, said marine geologist Gretchen Früh-Green, who explored this remarkable sub-seafloor region already during expeditions in 2003 and 2005. “In the presence of seawater these rocks produce the greenhouse gas methane, hydrogen and heat, among other things.”

Such rock reactions excite scientists because they represent possible sources to fuel life in the absence of sunlight and may be analogous to conditions found on other planets, or early in Earth's history.

“Among other things we hope to learn more about what kind of life exists on and within rocks at the Atlantis Massif”, said marine microbiologist Beth Orcutt. “Moreover we shall investigate the fate of carbon. Do the reactions between rocks and seawater lead to carbon storage in the seafloor? And does this process impact the global carbon cycle and our climate?”

The expedition is conducted by the European Consortium for Ocean Research Drilling (ECORD) as part of the International Ocean Discovery Program (IODP). Two rock drills were installed on the RRS James Cook, operated by the British Geological Survey and MARUM, the Center for Marine Environmental Sciences in Bremen/Germany. It is the first expedition of this kind to use this type of remotely operated drilling technology.

 

 

More information:

About the expedition - www.eso.ecord.org/expeditions/357/357.php

About the research program – www.iodp.org

About the European part of the program – www.ecord.org

 

Article adapted from ECORD/IODP.

Images: IODP Expedition 357 Logo and the RRS James Cook (Credit: National Oceanography Centre, Southampton / UK)

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