Description: A quasi-continuous magnetic log has been obtained in the Hawaii Scientific Drilling Project 2 (HSDP-2) between 600 m and 1800 m, which corresponds to a time interval of approximately 350 ka to 480 ka. A tri-axial borehole magnetometer was employed to measure the horizontal and vertical magnetic fields. Measurements were taken in downhole and uphole runs, with a good correlation between the two. In a first step the logs were corrected for the transfer function of the employed low-pass filter and then for the logging depths. To calculate rock magnetizations from magnetic components, we used a multidisk cylindrical model for the penetrated rocks. The disk thickness corresponds with 0.1 m to the logging sampling rate. Magnetic borehole logging in the HSDP-2 hole has established the following: Massive lava flows can be distinguished from those with prevailing hyaloclastites and enables us to supplement the lithology, especially in depth intervals with poor core recovery.
Global identifier:
Doi(
"10.1594/GFZ.SDDB.1111",
)
Origins: /Wissenschaft/GFZ Data Services
Tags: Holzeinschlag ? Höhle ? Goettingen borehole magnetometer (GBM) ? Hawaii Scientific Drilling Project ? Land based ? Magnetic field logging ? borehole_deviation_X_comp ? borehole_deviation_Y_comp ? borehole_deviation_total_calc ? magnetic_X_component ? magnetic_Y_component ? magnetic_Z_component ? magnetic_horizontal_field_calc ? magnetic_inclination_calc ? magnetic_total_field_calc ?
License: unbekannt
Language: Englisch/English
Issued: 2008-01-01
Time ranges: 2008-01-01 - 2008-01-01
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