Downhole Measurements in the AND-2A Borehole, ANDRILL Southern McMurdo Sound Project, Antarctica

• Main Authors: Wonik, T., Grelle, T., Handwerger, D., Jarrard, R. D., McKee, A., Patterson, T., Paulsen, T., Pierdominici, S., Schmitt, D. R., Schröder, H., Speece, M., Wilson, T., the ANDRIL-SMS Science Team
• Other Authors: Wonik, T.; Leibniz Institute for Applied Geophysics, 30655 Hannover - Germany, Grelle, T.; Leibniz Institute for Applied Geophysics, 30655 Hannover - Germany, Handwerger, D.; TerraTek (Schlumberger), Salt Lake City, UT 84104 - USA, Jarrard, R. D.; Dept. of Geology and Geophysics, Univ. of Utah, Salt Lake City, UT 84112 - USA, McKee, A.; Raytheon Polar Services Corporation, Centennial, CO 80112-3938 - USA, Patterson, T.; Montana Tech, 1300 West Park Street, Butte, MT 59701 - USA, Paulsen, T.; Dept. of Geology, Univ. of Wisconsin at Oshkosh, Oshkosh, WI 54901-8649 - USA, Pierdominici, S.; Istituto Nazionale di Geofisica e Vulcanologia, Sezione Roma1, Roma, Italia, Schmitt, D. R.; Inst. for Geophysical Research, Dept. of Physics, Univ. of Alberta, Edmonton, Alberta, T6G 2G7 - Canada, Schröder, H.; Leibniz Institute for Applied Geophysics, 30655 Hannover - Germany, Speece, M.; Montana Tech, 1300 West Park Street, Butte, MT 59701 - USA, Wilson, T.; School of Earth Sciences, The Ohio State University, Columbus, OH 43210-1522 - USA, the ANDRIL-SMS Science Team; http://andrill.org/projects/sms/team.html, Leibniz Institute for Applied Geophysics, 30655 Hannover - Germany, TerraTek (Schlumberger), Salt Lake City, UT 84104 - USA, Dept. of Geology and Geophysics, Univ. of Utah, Salt Lake City, UT 84112 - USA, Raytheon Polar Services Corporation, Centennial, CO 80112-3938 - USA, Montana Tech, 1300 West Park Street, Butte, MT 59701 - USA, Dept. of Geology, Univ. of Wisconsin at Oshkosh, Oshkosh, WI 54901-8649 - USA, Istituto Nazionale di Geofisica e Vulcanologia, Sezione Roma1, Roma, Italia, Inst. for Geophysical Research, Dept. of Physics, Univ. of Alberta, Edmonton, Alberta, T6G 2G7 - Canada, School of Earth Sciences, The Ohio State University, Columbus, OH 43210-1522 - USA, http://andrill.org/projects/sms/team.html
• Format: Article in Journal/Newspaper
• Language: English
• Published: 2009
• Subjects: Downhole measurements; Borehole; Vertical Seismic Profile; Hydraulic Fracturing; Antarctica; 04. Solid Earth::04.02. Exploration geophysics::04.02.99. General or miscellaneous; 04. Solid Earth::04.02. Exploration geophysics::04.02.05. Downhole; radioactivity; remote sensing; and other methods; 04. Solid Earth::04.02. Exploration geophysics::04.02.07. Instruments and techniques; 04. Solid Earth::04.04. Geology::04.04.99. General or miscellaneous; 04. Solid Earth::04.07. Tectonophysics::04.07.99. General or miscellaneous; 04. Solid Earth::04.07. Tectonophysics::04.07.05. Stress; 04. Solid Earth::04.07. Tectonophysics::04.07.07. Tectonics; McMurdo Sound; Victoria Land; Antarc*
• Online Access: http://hdl.handle.net/2122/7888

Under the framework of the ANDRILL Southern McMurdo Sound (SMS) Project successful downhole experiments were conducted in the 1138.54 metre (m)-deep AND-2A borehole. Wireline logs successfully recorded were: magnetic susceptibility, spectral gamma ray, sonic velocity, borehole televiewer, neutron porosity, density, calliper, geochemistry, temperature and dipmeter. A resistivity tool and its backup both failed to operate, thus resistivity data were not collected. Due to hole conditions, logs were collected in several passes from the total depth at ~1138 metres below sea floor (mbsf) to ~230 mbsf, except for some intervals that were either inaccessible due to bridging or were shielded by the drill string. Furthermore, a Vertical Seismic Profile (VSP) was created from ~1000 mbsf up to the sea floor. The first hydraulic fracturing stress measurements in Antarctica were conducted in the interval 1000-1138 mbsf. This extensive data set will allow the SMS Science Team to reach some of the ambitious objectives of the SMS Project. Valuable contributions can be expected for the following topics: cyclicity and climate change, heat flux and fluid flow, seismic stratigraphy in the Victoria Land Basin, and structure and state of the modern crustal stress field. Published 57-68 3.2. Tettonica attiva N/A or not JCR restricted