Borehole Seismic Data
IODP logging
contractor: USIO/LDEO
Hole: U1438F
Expedition:
Location: Amami-Sankaku Basin (Philippine Sea)
Latitude: 27° 23.0167' N
Longitude: 134° 19.0905' E
Logging date:
Sea floor
depth (driller's):
4711 m DRF
Sea floor
depth (logger's):
4711 m WRF (MSS/HRLA/HLDS/EDTC-B/HNGS uplog)
Total
penetration: 5411 m DRF (700 m DSF)
Total core recovered: none, this hole was dedicated to logging
Lithologies: Mud with ash, turbidites, conglomerates, breccia, and sandstone were drilled at hole U1438D
TOOL USED: VSI (Versatile
Seismic Imager)
The logging data
was recorded by Schlumberger in LDF/DLIS format. All processing, including first
arrival picking and stacking, was performed by Schlumberger during
Expedition 351. The data was then
converted into SEGY format at LDEO-BRG, using code developed in house.
Stacks are
generally calculated with at least nine good traces.
All the data in
the SEGY files are sorted shot by shot (i.e. chronologically).
Additional
information about the drilling and logging operations can be found in the
Operations and Downhole Measurements sections of the expedition report,
Proceedings of the Integrated Drilling Program, Expedition 351.
For further questions about the logs, please contact:
Gilles Guerin
phone: 845-365-8671
fax: 845-365-3182
E-mail: Gilles Guerin
Phone: 845-365-8343
Fax: 845-365-3182
E-mail: Cristina Broglia