Sampling and processing technologies of deep-biosphere in-situ cores with PRESS (pressurized core sub-sampling and extrusion system)

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Author(s): Anders, Erik C.; Müller, Wolfgang H.
Author Affiliation(s): Primary:
Technische Universtät Berlin, Lehrstuhl für Kontinuumsmechanik und Materialtheorie, Berlin, Federal Republic of Germany
Volume Title: 2008 AAPG annual convention & exhibition; abstracts volume
Source: Abstracts: Annual Meeting - American Association of Petroleum Geologists, Vol.2008; AAPG 2008 annual convention & exhibition, San Antonio, TX, April 19-23, 2008. Publisher: American Association of Petroleum Geologists and Society for Sedimentary Geology, Tulsa, OK, United States
Note: In English
Summary: Precondition to achieve genuine findings is research in pristine in-situ habitat, if environmentally relevant results are to be obtained. Benthic conditions of sediment structure and gas hydrates, temperature, pressure and bio-geochemistry have to be maintained during the sequences of retrieval, transfer, storage and downstream analysis. TUB developed PRESS in the EU project HYACE/HYACINTH which enables well defined sectioning and transfer of drilled pressure-cores (obtained by HYACE Rotary Corer and Fugro Percussion Corer) into transportation and investigation chambers; all sterile, anaerobic and without depressurisation. When coupled with DeepIsoBUG (University Cardiff, John Parkes) it also allows sub-sampling and incubation of coaxial core-sections to examine high-pressure adapted bacteria or remote biogeochemical processes in defined research conditions of the laboratory. Aided by Deutsche Forschungsgemeinschaft (DFG) PRESS was successfully deployed in the Gulf of Mexico (US JIP), on IODP Expedition 311 (in facilities of Canadian Geological Survey) and as part of the NGHP expedition 01. However, it also disclosed deficiencies regarding its bulkiness and overall handling. Especially the core-cutting mechanism exhibited substantial shortcomings and the immense proportion of the system additionally impaired the handling and limited the applicability just as well as it amplified operating expenses. TUB is currently working on concepts to scale down the system to reduce logistical and financial expenses and likewise to enlarge its implementation by requiring less operating space. Redesigning the fault-prone cutting mechanism shall simultaneously adjust the system to harder cores (e.g., ICDP). Novel transportation chambers for processed sub-samples intend to make the system more attractive for a broad spectrum of users and reduce their interdependence.
Year of Publication: 2008
Research Program: IODP International Ocean Drilling Program
Key Words: 07 Marine Geology and Oceanography; Bacteria; Cores; Drilling; East Pacific; Engineering properties; Expedition 311; In situ; Integrated Ocean Drilling Program; Marine methods; Marine sediments; Microorganisms; North Pacific; Northeast Pacific; Pacific Ocean; Sampling; Sediments
Coordinates: N483700 N484800 W1264000 W1270400
Record ID: 2010045174
Copyright Information: GeoRef, Copyright 2019 American Geosciences Institute. Reference includes data supplied by American Association of Petroleum Geologists, Tulsa, OK, United States