Proc. IODP, 301, Methods

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Expedition reports Research results Supplementary material Drilling maps Expedition bibliography
Chapter contents Introduction Shipboard scientific procedures Core handling Lithostratigraphy Lithologic classification Visual core description and barrel sheets Smear slide analyses Digital imaging X-ray diffraction analyses Igneous and metamorphic petrology Core curation and shipboard sampling Hard rock visual core descriptions Igneous unit and contact logs Thin sections Alteration Structures Hard rock geochemical analyses Paleomagnetism Paleomagnetic instruments Paleomagnetic measurements Geomagnetic polarity timescale Biogeochemistry Interstitial water samples Interstitial water analyses Gas analyses Sediments Microbiology Core handling and sampling Total cell counts Cultivation Physical properties Multisensor track measurements Thermal conductivity Moisture and density properties Velocity Shear strength Thermal experiments Thermal tools Packer experiments Wireline logging Logging tools and tool strings Logging data flow and processing Wireline logging data quality References Figures F1. Sample numbering scheme. F2. Grain-size divisions. F3. Barrel sheet. F4. Lithology symbols. F5. VCD. F6. VCD key. F7. Structural description. F8. Vein morphology. F9. Orientation conventions. F10. Coordinate system. F11. GPTS. F12. MBIO sampling strategy. F13. MPN counts. F14. Gradient cultures. F15. Thermal conductivity standards. F16. Tool string configurations. F17. New winch and AHC. Tables T1. Color key. T2. Piece log. T3. Igneous unit/contacts log. T4. Rock data key. T5. Thin section description. T6. Alteration log. T7. Vein log. T8. Structural log. T9. Grinding contamination. T10. ICP-AES conditions. T11. Hard rock ICP-AES run. T12. ICP-AES QA/QC data. T13. Culture media. T14. Vitamin solution. T15. MJ solution. T16. Marine salts medium. T17. S-1 saline solution. T18. S-2 saline solution. T19. Trace mineral solution. T20. Trace element solution. T21. Vitamin solution for S-1. T22. Vitamin solution for S-2. T23. Wireline tool strings. T24. Wireline tools. PDF file			Previous \| Next doi:10.2204/iodp.proc.301.105.2005 Thermal experiments The Expedition 301 downhole measurements program included several thermal tools. These tools are used to determine heat flow within sediments and to assess the thermal state of the borehole. Measurements within sediments should provide an indication of predrilling thermal conditions because the temperature tools penetrate ahead of the bit into undisturbed material. In contrast, measurements in boreholes can be strongly influenced by drilling operations, particularly if made soon after drilling. Borehole thermal data in basement are potentially useful, nevertheless, because they can indicate formation intervals that are likely to be hydrogeologically active. Data collected postdrilling from CORK observatories will be more useful for determining predisturbance thermal conditions in basement. Estimation of heat flow also requires determination of formation thermal conductivity. Methods used during Expedition 301 for measuring thermal conductivity are described in "Thermal conductivity" in "Physical Properties." Thermal tools The APC temperature (APCT) coring shoe allows collection of temperature data without a separate tool run because the sensor and data logger are incorporated into the APC coring system. Details regarding operation and interpretation of this instrument are given in Shipboard Scientific Party (1992b). The Davis-Villinger Temperature Probe (DVTP) requires a dedicated tool run on the coring line but can be run in sediments that are too lithified to provide good APCT tool data. A description of DVTP operation and data interpretation is provided in Davis et al. (1997). Top of page \| Previous \| Next

Thermal experiments

Thermal tools