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Part 4. Submarine topography and shoal-water ecology

Professional Paper 280-K
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https://doi.org/10.3133/pp280K

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Abstract

The topography of the sea floor within 10 miles of Saipan broadly resembles that of the land. Eastward, toward the Mariana trench, slopes are about 6°, without prominent benches or scarps. This is inferred to indicate easterly continuation of generally pyroclastic bedrock. The westward slope averages 2° to 3° and consists mainly of nearly flat benches and westfacing scarps. This is taken to imply westward continuation of a limestone bench-and-fault-scarp topography. Projection of known faults to sea and through Tinian, on the basis of topographic trends, suggests a pattern of west-dipping normal faults that parallel the strike of the Mariana ridge and affect the shape and position of islands at the crest of the ridge.

Suggested Citation

Cloud, P.E., 1959, Part 4. Submarine topography and shoal-water ecology: U.S. Geological Survey Professional Paper 280, Report: 134 p.; 4 Plates: 27.31 x 35.94 inches or smaller; Table 6; Chart 1, https://doi.org/10.3133/pp280K.

ISSN: 2330-7102 (online)

ISSN: 1044-9612 (print)

Study Area

Publication type Report
Publication Subtype USGS Numbered Series
Title Part 4. Submarine topography and shoal-water ecology
Series title Professional Paper
Series number 280
Chapter K
DOI 10.3133/pp280K
Year Published 1959
Language English
Publisher U.S. Government Printing Office
Publisher location Washington, D.C.
Description Report: 134 p.; 4 Plates: 27.31 x 35.94 inches or smaller; Table 6; Chart 1
Larger Work Type Report
Larger Work Subtype USGS Numbered Series
Larger Work Title Geology of Saipan, Mariana Islands
First page 361
Last page 445
Country Saipan
Online Only (Y/N) N
Additional Online Files (Y/N) N
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