Accession Number : AD0712781


Title :   AN INVESTIGATION OF CHANGES INDUCED IN MACROSTRUCTURES IN PELITIC SEDIMENTS DURING PRIMARY CONSOLIDATION.


Descriptive Note : Technical rept.,


Corporate Author : TEXAS A AND M UNIV COLLEGE STATION INST OF STATISTICS


Personal Author(s) : Chmelik,Frank Bernard


Report Date : JAN 1970


Pagination or Media Count : 143


Abstract : The investigation of consolidation-induced changes in macrostructures is based on (1) the use of stereo X-ray radiography to map the macrostructures prior to and following consolidation and (2) a comparison of changes induced in artificial and natural macrostructures. Homogeneous marine clay, fine grained quartz sand, and CuO powder were used to make twenty-two geometric macrostructures. Several types of coring devices, including two Flexible Liner Corers developed for this study, were used to collect cores from a variety of depositional environments. Electrical logging techniques and X-ray radiography were applied to locate and identify macrostructures in the cores. Stereo X-ray radiographs were made in at least two orientations, both immediately prior to and following consolidation of all models. Comparisons of the macrostructure changes induced during consolidation of the artificial structures with those of the natural structures indicates the existence of a positive relationship. Several conditions are imposed before the natural and artificial structures can be related. These conditions include that both structures be of similar materials and subjected to similar conditions of consolidation. This relationship may allow the analysis of consolidated natural macrostructures to their environment of deposition. (Author)


Descriptors :   (*OCEAN BOTTOM, SEDIMENTATION), (*SEDIMENTATION, COMPACTING), RADIOGRAPHY, STEREOSCOPIC, PHOTOGRAPHY, CLAY, SAND, DEEP WATER, ELECTRICAL RESISTANCE, PROBES, OCEAN BOTTOM SAMPLING, THESES


Subject Categories : PHYSICAL AND DYNAMIC OCEANOGRAPHY
      SOIL MECHANICS


Distribution Statement : APPROVED FOR PUBLIC RELEASE