12. X-RAY MINERALOGY OF DSDP LEGS 44 AND 44A, WESTERN NORTH ATLANTIC: LOWER CONTINENTAL RISE HILLS, BLAKE NOSE, AND BLAKE-BAHAMA BASIN

• Main Authors: Roger D. Flood, Woods Hole
• Other Authors: The Pennsylvania State University CiteSeerX Archives
• Format: Text
• Language: English
• Subjects: North Atlantic
• Online Access: http://citeseerx.ist.psu.edu/viewdoc/summary?doi=10.1.1.522.9581; http://www.deepseadrilling.org/44/volume/dsdp44_12.pdf

Bulk samples were analyzed with an X-ray dif-fractometer in order to obtain semiquantitative determinations of the mineral composition of the sediments sampled. The analyses were performed in the manner of Cook et al., 1975. Briefly, the method was as follows. Bulk samples were washed with distilled water to remove sea salts and ground to less than 10 µm under butanol. They were then treated with trihexylamine acetate to expand smectite minerals and X-rayed as random powders. Bulk samples were subjected to Cu-Kα radiation at 2° 2θ/minute. A 1 ° divergence slit and a 0.001 inch receiving slit with a curved crystal monocromator were used. Diffraction patterns were recorded on chart paper at 1 inch/minute with a full-scale reading of 1000