Publication Date:
2017-04-03
Description:
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.
Description:
Published
Description:
57-68
Description:
3.2. Tettonica attiva
Description:
N/A or not JCR
Description:
restricted
Keywords:
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
Repository Name:
Istituto Nazionale di Geofisica e Vulcanologia (INGV)
Type:
article
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