Vertical Seismic Profile Data

IODP logging contractor: USIO/LDEO

Hole: U1389A

Expedition: 339

Location: Gulf of Cadiz (eastern Atlantic Ocean)

Latitude: 36° 25.5183' N

Longitude: 7° 16.6907' W

Logging date: December 24, 2011

Sea floor depth (driller's): 656.2 m DRF

Sea floor depth (logger's): 656 m WRF (HRLA/HLDS/EDTC-B/HNGS Main Run)

Sea floor depth (logger's): 654 m WRF (FMS/DSI/GPIT/EDTC-B Pass 2)

Total penetration:  1011.1 m DRF (354.9 m DSF)

Total core recovered: 335.6 m (94 % of cored section)

Oldest sediment recovered: Pleistocene

Lithology:  Nannofossil mud, silty mud and silty sand.



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 . The data was then converted into SEGY format at USIO/LDEO, 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 339. 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