Contamination tracer testing with seabed rock drills; IODP expedition 357

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Author(s): Orcutt, Beth; Bergenthal, Markus; Freudenthal, Tim; Smith, David J.; Lilley, Marvin D.; Schneiders, Luzie; Fruh-Green, Gretchen L.
Author Affiliation(s): Primary:
Bigelow Laboratory for Ocean Science, East Boothbay, ME, United States
Other:
University of Bremen, Marum-Center for Marine Environmental Sciences, Germany
British Geological Survey, United Kingdom
University of Washington at Seattle, United States
Eidgenössische Technische Hochschule Zürich, Switzerland
Volume Title: AGU 2016 fall meeting
Source: American Geophysical Union Fall Meeting, Vol.2016; American Geophysical Union 2016 fall meeting, San Francisco, CA, Dec. 12-16, 2016. Publisher: American Geophysical Union, Washington, DC, United States
Note: In English
Summary: IODP Expedition 357 utilized seabed rock drills for the first time in the history of the ocean drilling program, with the aim of collecting intact core of shallow mantle sequences from the Atlantis Massif to examine serpentinization processes and the deep biosphere. This new drilling approach required the development of a new system for delivering synthetic tracers during drilling to assess for possible sample contamination. Here, we describe this new tracer delivery system, assess the performance of the system during the expedition, provide an overview of the quality of the core samples collected for deep biosphere investigations based on tracer concentrations, and make recommendations for future applications of the system.
Year of Publication: 2016
Research Program: IODP2 International Ocean Discovery Program
Key Words: 22 Environmental Geology; Atlantic Ocean; Atlantis Massif; Expedition 357; International Ocean Discovery Program; Mid-Atlantic Ridge; North Atlantic; Pollutants; Pollution; Tracers
Coordinates: N300728 N301000 W0420350 W0421100
Record ID: 2017068222
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