Data Publications

Magnetic field uplog, 19990705 for HSDP-2-A (592.5 m - 998.5 m)

hasData_Center_Short_Name
  • SDDB
hasDataset_Online_Resource
hasProject_Long_Name
  • International Continental Scientific Drilling Program
  • Hawaii Scientific Drilling Project
hasDataset_Release_Date
  • 2008-08-27
hasDataset_Title
  • Magnetic field uplog, 19990705 for HSDP-2-A (592.5 m - 998.5 m)
hasEntry_ID
  • 10.1594/GFZ.SDDB.1112
hasKeyword
  • 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
hasSummary
  • 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.
GCMD Sciencekeywords describing the dataset. Click on Keyword to find similar datasets