Geology and larger Foraminifera of Saipan Island

Abstract

* Numbers in parentheses give locations in terms of the 10,000 yd. grid on the map, 1 etel. ' Column for Guam compiled from observations by Steams, Bridge and Piper. 3 "Oligocene" of Asano. * The specimens mentioned in this report are preserved in the U. f, National Museum. A duplicate set has been deposited in the Bernice P. Bishop Museum in Honolulu. * In the following descriptions all colors are given in accordance with the classification and terminology used in the Rock Color Chart, National Research Council, Washington, 1948, and the symbols in parentheses following the color name are those used on that chart.

Tertiary larger foraminifera from Guam

“…The larger Foraminifera of Guam are similar to those found on Saipan (Cole and Bridge, 1953;Cole, 1957a), in the drill holes on Bikini Atoll (Cole, 1954) and Eniwetok Atoll (Cole, I957b), on Lau, Fiji (Cole, 1945), and at numerous localities in the Malayan Archipelago. The similarities of these faunas to those previously described are so great that all the species found in the sediments on Guam could be referred to species described from these other areas.…”

“…Inasmuch as many of the species found in the samples from Guam are identical with species discussed and illustrated in recent articles on Saipan (Cole and Bridge, 1953;Cole, 1957a), Bikini Atoll (Cole, 1954), and Eniwetok Atoll (Cole, 1957b), these species will not be discussed or illustrated in this article. The following list records the species that are not included in "Description of Occurrence elsewhere.…”

Geology of Saipan, Mariana Islands; Part 1, General geology

“…Excluding an abstract by ourselves (1951), we know of only seven published reports that deal exclusively or primarily with the geology of Saipan (Seidel, 1940b;Tada, 1926;Tayama, 1938;Asano, 1939a;Imaizumi, 1939;Yabe and Sugiyama, 1935;Cole and Bridge, 1953). Geologic and geographic reports that make reference to Saipan, however, are scattered through the published and unpublished record.…”

Larger Foraminifera from deep drill holes on Midway atoll

“…Heterostegina suborbicularis may have an extended stratigraphic range in the western Pacific for Cole (1957b, p. 762) Cole (in Cole and Bridge, 1953;Cole 1954;1957a, b) illustrated and commented on Spiroclypeus found on Saipan Island and in samples from the drill holes on Bikini and Eniwetok Atolls. Earlier, Cole (1939, p. 185) described a new species, S. liigginsi, from the Miocene (Tertiary e) of Guam Island, which he stated might prove to be synonymous with S. leupoldi.…”