. Collected reprints, Essa Institute for Oceanography. Oceanography METERS 1600 2400 3200 4000 4800 800 1600 2400 3200 122 120 118 117 116 115 113 112 111 110 109 108 107 106 FAULT ZONE SE 92 91 90 89 67 66 85 84 63 *r* \^_^y^^_ yOr^V- qT ^7— WFv NW SECTION 2 SE INNER VOLCANIC ARC. Fig. 3.—Sections 1-2, Andaman Sea island arc system. Locations shown on Figure 2. tification less certain. Fault planes and the direc- tion of movement along faults commonly are indefinite. The horizontal scale of the interpreted sections is based on the ship's position fixes. These were made at 30-min
. Collected reprints, Essa Institute for Oceanography. Oceanography METERS 1600 2400 3200 4000 4800 800 1600 2400 3200 122 120 118 117 116 115 113 112 111 110 109 108 107 106 FAULT ZONE SE 92 91 90 89 67 66 85 84 63 *r* \^_^y^^_ yOr^V- qT ^7— WFv NW SECTION 2 SE INNER VOLCANIC ARC. Fig. 3.—Sections 1-2, Andaman Sea island arc system. Locations shown on Figure 2. tification less certain. Fault planes and the direc- tion of movement along faults commonly are indefinite. The horizontal scale of the interpreted sections is based on the ship's position fixes. These were made at 30-min intervals while traveling at a speed of about 5 knots. Hence, each fix point marked on the sections is separated from the ad- jacent fix by a 30-min time interval—regardless of the number assigned to it—and the horizontal scale is approximately 5 nautical mi between every second fix mark. Analysis and interpreta- tion of the results preceded the receipt of adjust- ed fix locations by many months, but the differences between the true or corrected track line (as on Fig. 2) and the section track lines (Figs. 3, 4) are relatively slight. Penetration depths are uncorrected for sound velocity. The scale of the sections is based on a velocity of 1,600 m/sec, or 5,248 ft/sec. Where "lower velocity" sediments overlie or are adja- cent to "high-velocity" rocks, any particular ve- locity assumption is incorrect. A higher estimated velocity would increase the thicknesses of sedi-. Please note that these images are extracted from scanned page images that may have been digitally enhanced for readability - coloration and appearance of these illustrations may not perfectly resemble the original Institute for Oceanography; Atlantic Oceanographic Laboratories (U. S. ); Pacific Oceanographic Laboratories; United States. Environmental Science Services Administration. Research Laboratories. Washington, D. C. : U. S. Dept. of Commerce, Environmental Science Servic
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