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GEOREF RECORD

Stratigraphic potential of Bolboforma significantly increased by new finds in the North Atlantic and South Pacific

C. Wylie Poag and A. L. Karowe
Stratigraphic potential of Bolboforma significantly increased by new finds in the North Atlantic and South Pacific
Palaios (April 1986) 1 (2): 162-171

Abstract

Until now, the genus Bolboforma, a problematic group of calcareous microfossils, has been recorded only in Oligocene to Pliocene marine sedimentary rocks, chiefly in the eastern North Atlantic region. We add to this eastern North Atlantic record six new sites and eleven undescribed species from the continental slopes of Ireland and Morocco. More significantly, we record, for the first time, abundant assemblages of Bolboforma on the western side of the North Atlantic and in the western South Pacific. Seven boreholes on the continental shelf and slope of New Jersey and Virginia contain ten species, three of which are new. Two species are present in two outcrops in eastern Mississippi and four are present in a borehole in the coastal plain of Virginia. On the Lord Howe Rise, west of New Zealand, a DSDP corehole has yielded a rich assemblage including four undescribed species. In addition to expanding the geographic distribution of Bolboforma, our work extends the known stratigraphic range downward into the upper Eocene on both sides of the North Atlantic and in the western South Pacific. Our findings firmly support the inference of a planktonic life style for Bolboforma, which implies a significant potential for biostratigraphic, paleobiogeographic, and paleoenvironmental studies, on both a local and global scale. We recommend a concerted effort to further document the nature and distribution of Bolboforma.


ISSN: 0883-1351
Serial Title: Palaios
Serial Volume: 1
Serial Issue: 2
Title: Stratigraphic potential of Bolboforma significantly increased by new finds in the North Atlantic and South Pacific
Affiliation: U. S. Geol. Surv., Woods Hole, MA, United States
Pages: 162-171
Published: 198604
Text Language: English
Publisher: Society of Economic Paleontologists and Mineralogists, Tulsa, OK, United States
References: 24
Accession Number: 1986-061508
Categories: Stratigraphy
Document Type: Serial
Bibliographic Level: Analytic
Illustration Description: illus.
N36°25'17" - N36°26'01", W69°27'41" - W69°25'49"
N38°42'47" - N38°42'48", W72°32'58" - W72°32'56"
N38°49'12" - N38°49'13", W72°46'26" - W72°46'25"
Country of Publication: United States
Secondary Affiliation: GeoRef, Copyright 2017, American Geosciences Institute. Reference includes data supplied by SEPM (Society for Sedimentary Geology), Tulsa, OK, United States
Update Code: 1986
Program Name: DSDPDeep Sea Drilling Project
Program Name: USGSOPNon-USGS publications with USGS authors
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