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Comparison of different methods of reconnaissance of fractured rock masses (In French)
237A 876167 Locating subsurface gravel with thermal imagery: preliminary results Scholen, D E: Clerke, V¢ H; Luepke, D E Trans Res Rec N1089, 1986, P17-22 Results of exploration using an airborne thermal int'rared multispectral scanner are presented. Equipment and data acquisition and processing are described. Areas showing a quartz spectral signature radiating from the ground were found, from drill hole data, to have substantial subsurface gravel deposits. This method may be developed into a useful technique for locating new gravel pits.
876168 Attempt to delineate the spatial limits of a hydrocarbon reservoir by thermal IR remote sensing mission - a case study from Cambay Basin, Gujerat, India Mitra, D S Proc 13th CM341 Conference: Geology and Exploration, Singapore, 11-16 May 1986 1/2, PII-14. Publ Parkcille: CMMI, 1986
Calibrated thermal IR data from the Cambay Basin was used to determine surface temperature and heat flow. By applying the conductive heat flow continuation technique (Brott et al, 1981) a hydrocarbon bearing reservoir was delineated. Boundaries coincided with those defined by seismic methods, suggesting that thermal IR remote sensing may be an effective exploration tool.
Structural and geotechnical mapping See also: 876075, 876150
876169 Geologic aspects of hazardous waste site investigations in Missouri Williams, J H; St Ivany, G Bull Assoc Engng Geol V24, N1, Feb 1987, P43-51
The approach to geological evaluation of waste sites of Stohr et al (1981), which considers degrees of limitations in surficial material properties and thickness, bedrock type, topography, geologic history, and surface water and groundwater relationships, is described. Six physiographic subprovinces of Missouri are classified into five regions using this approach. The influence of geohydrologic features in determining geologic limitations of the subprovinces is discussed, and site exploration procedures suggested.
876170 Note on photo-radiation - a new photogrammetric method applicable to the monitoring of earth movements Collins, B J; Madge, B Proc Symposium on Landslides in the South Wales Coalfield, Polytechnic of Wales, Pontypridd, 1-3 April 1985 P201-203. Publ Pontypridd." Polytechnic of Wales, 1985 A simple method of terrestial photogrammetry is described, which is suitable for monitoring ground movement. It relies on only one photographic image, thus eliminating many sources of error, and requires only elementary mathematics for its interpretation.
876171 Comparison of different methods of reconnaissance of fractured rock masses (In French) Homand-Etienne, F; Be~hout. B; Houpert, R: Chapot, P Proc 5th International Congress International Association of Engineering Geology, Buenos A&es, 20-25 October 1986 V1. P3-12. Publ Rotterdam: ,4 A Balkema, 1986 The fractures at two perpendicular faces in a disused quarry have been studied using photographic techniques, in situ crosshole and seismic log~ng, and by assessing fracture spacing and RQD from core samples. Results are examined critically to evaluate the most suitable techniques for fractured rock masses. Geostatisticat analysis is used to compare regional variables, such as fracture spacing and P wave velocity at the site with those of the whole rock mass.
Geophysical techniques See also: 876133
876172 Velocity structure of Silent Canyon Caldera, Nevada Test Site Leonard, M A: Johnson. L R Bull Seismol Soc Am V77, N2, 1987. P597-613 To accurate!y determine the characteristics of an earthquake or explosive source, it is necessar?' to know the velocity, density, and attenuation properties of the structure through which the seismic waves propagate. A laterally averaged, one dimensional P and S wave velocity structure of the Silent Canyon Caldera, constrained by a suitably large data set, has been obtained in order to better resolve seismic sources in that region.
876173 Seismic cone penetration testing in the near offshore of the Mackenzie Delta. Note Campanella, R G; Robertson, P K; Gillespie, D; Laing, N; Kurfurst, P J Can Geotech J V24, NI, Feb 1987. P154-159 Wave velocities of subsurface sediments in shallow waters of the Mackenzie Delta, Canada, were determined using seismic cone penetration tests, operating on landfast ice in winter. Several seismic sources and receivers were evaluated. Results are presented and discussed.
876174 Interpretation of I. P. time domain/resistivity soundings for delineating sea-water intrusions in some coastal areas of the northeast of Spain Seara, J L; Granda,A Geoexploration V24, N2, May 1987, P153-167 The simultaneous use of Induced Polarisation and Vertical Electrical Sounding (IPVES) is applied to cases of salt water intrusion. Because IPS detects areas of low or negligible chargeability, it does not delineate false boundaries indicated by resistivity methods if low resistivity clays or shales are present. Field procedures, interpretation of results and practical applications are described.
© 1987 Pergamon Journals Ltd. Reproduction not permitted
876168 Attempt to delineate the spatial limits of a hydrocarbon reservoir by thermal IR remote sensing mission - a case study from Cambay Basin, Gujerat, India Mitra, D S Proc 13th CM341 Conference: Geology and Exploration, Singapore, 11-16 May 1986 1/2, PII-14. Publ Parkcille: CMMI, 1986
Calibrated thermal IR data from the Cambay Basin was used to determine surface temperature and heat flow. By applying the conductive heat flow continuation technique (Brott et al, 1981) a hydrocarbon bearing reservoir was delineated. Boundaries coincided with those defined by seismic methods, suggesting that thermal IR remote sensing may be an effective exploration tool.
Structural and geotechnical mapping See also: 876075, 876150
876169 Geologic aspects of hazardous waste site investigations in Missouri Williams, J H; St Ivany, G Bull Assoc Engng Geol V24, N1, Feb 1987, P43-51
The approach to geological evaluation of waste sites of Stohr et al (1981), which considers degrees of limitations in surficial material properties and thickness, bedrock type, topography, geologic history, and surface water and groundwater relationships, is described. Six physiographic subprovinces of Missouri are classified into five regions using this approach. The influence of geohydrologic features in determining geologic limitations of the subprovinces is discussed, and site exploration procedures suggested.
876170 Note on photo-radiation - a new photogrammetric method applicable to the monitoring of earth movements Collins, B J; Madge, B Proc Symposium on Landslides in the South Wales Coalfield, Polytechnic of Wales, Pontypridd, 1-3 April 1985 P201-203. Publ Pontypridd." Polytechnic of Wales, 1985 A simple method of terrestial photogrammetry is described, which is suitable for monitoring ground movement. It relies on only one photographic image, thus eliminating many sources of error, and requires only elementary mathematics for its interpretation.
876171 Comparison of different methods of reconnaissance of fractured rock masses (In French) Homand-Etienne, F; Be~hout. B; Houpert, R: Chapot, P Proc 5th International Congress International Association of Engineering Geology, Buenos A&es, 20-25 October 1986 V1. P3-12. Publ Rotterdam: ,4 A Balkema, 1986 The fractures at two perpendicular faces in a disused quarry have been studied using photographic techniques, in situ crosshole and seismic log~ng, and by assessing fracture spacing and RQD from core samples. Results are examined critically to evaluate the most suitable techniques for fractured rock masses. Geostatisticat analysis is used to compare regional variables, such as fracture spacing and P wave velocity at the site with those of the whole rock mass.
Geophysical techniques See also: 876133
876172 Velocity structure of Silent Canyon Caldera, Nevada Test Site Leonard, M A: Johnson. L R Bull Seismol Soc Am V77, N2, 1987. P597-613 To accurate!y determine the characteristics of an earthquake or explosive source, it is necessar?' to know the velocity, density, and attenuation properties of the structure through which the seismic waves propagate. A laterally averaged, one dimensional P and S wave velocity structure of the Silent Canyon Caldera, constrained by a suitably large data set, has been obtained in order to better resolve seismic sources in that region.
876173 Seismic cone penetration testing in the near offshore of the Mackenzie Delta. Note Campanella, R G; Robertson, P K; Gillespie, D; Laing, N; Kurfurst, P J Can Geotech J V24, NI, Feb 1987. P154-159 Wave velocities of subsurface sediments in shallow waters of the Mackenzie Delta, Canada, were determined using seismic cone penetration tests, operating on landfast ice in winter. Several seismic sources and receivers were evaluated. Results are presented and discussed.
876174 Interpretation of I. P. time domain/resistivity soundings for delineating sea-water intrusions in some coastal areas of the northeast of Spain Seara, J L; Granda,A Geoexploration V24, N2, May 1987, P153-167 The simultaneous use of Induced Polarisation and Vertical Electrical Sounding (IPVES) is applied to cases of salt water intrusion. Because IPS detects areas of low or negligible chargeability, it does not delineate false boundaries indicated by resistivity methods if low resistivity clays or shales are present. Field procedures, interpretation of results and practical applications are described.
© 1987 Pergamon Journals Ltd. Reproduction not permitted