24 research outputs found
(Table 29) Data of X-ray radiographic analyses of clay minerals from DSDP Site 48-402/Hole 402A
(Table 1) Chemical composition of montmorillonites in size fraction <0.01 mm from Pliocene-Quaternary sediments of DSDP Hole 54-420
Clay minerals at DSDP Sites 71-511 and 71-513
The distribution of clay minerals, determined by X-ray diffraction, is given for Jurassic to Holocene sediments recovered at DSDP Sites 511 and 513 in the Southwest Atlantic. These data, plus the lithologic and paleoenvironmental information gathered by the shipboard scientists, are used to subdivide the sedimentary sequence into genetic lithologic facies labeled series, seven for Site 511 and two for Site 513. Sediments of these series reflect the main historical and paleoenvironmental events which other means of study have determined to affect this region; particularly important was the opening of the South Atlantic during the Early Cretaceous