Borehole Seismic Data
ODP logging contractor: USIO/LDEO
Hole: U1309D
Expedition: 340T
Location: Atlantis Massif-Mid Atlantic Ridge (central N Atlantic ocean)
Latitude: 30° 10.120' N
Longitude: 42° 7.113' W
Logging date: February 21-26, 2012
Sea floor depth (driller's): 1656 m DRF
Total penetration (IODP expedition 305): 3071.5 m DRF (1415.5 m DSF)
Total core recovered (this expedition): none
Oldest sediment recovered: none
Lithology: diabase, gabbro, oxide gabbro, dunitic troctolite
TOOL USED: VSI (Versatile
Seismic Imager)
The logging data
was recorded by Schlumberger in LDF format. All processing, including first
arrival picking and stacking, was performed by Schlumberger during
Expedition 340T. The data was then
converted into SEGY format at USIO/LDEO, using tcode 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 340T.
For further questions about the logs, please contact:
Gilles Guerin
Phone: 845-365-8671
Fax: 845-365-3182
E-mail: Gilles Guerin
Cristina Broglia
Phone: 845-365-8343
Fax: 845-365-3182
E-mail: Cristina Broglia