Upper Cretaceous agglutinated foraminifers from the western Pacific Ocean ...
Abyssal agglutinated foraminifers allow biostratigraphic correlation of Upper Cretaceous brown zeolitic claystones in Deep Sea Drilling Project Holes 196A and 198A and Ocean Drilling Program Holes 800A and 801 A. Three agglutinated foraminiferal zones subdivide the strata overlying the Campanian to...
Main Authors: | , |
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Format: | Article in Journal/Newspaper |
Language: | English |
Published: |
PANGAEA
1992
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Subjects: | |
Online Access: | https://dx.doi.org/10.1594/pangaea.771383 https://doi.pangaea.de/10.1594/PANGAEA.771383 |
Summary: | Abyssal agglutinated foraminifers allow biostratigraphic correlation of Upper Cretaceous brown zeolitic claystones in Deep Sea Drilling Project Holes 196A and 198A and Ocean Drilling Program Holes 800A and 801 A. Three agglutinated foraminiferal zones subdivide the strata overlying the Campanian to Cenomanian cherts. The lower zone is characterized by Hormosina gigantea, which is a Campanian zonal marker in the North Atlantic Ocean and western Tethys. A major correlation level, which was observed in all holes studied, is based on the acme of evolute Haplophragmoides spp. This acme zone was observed in Sample 129-801A-6R-CC, about 9 m above the first occurrence of H. gigantea in Sample 129-801A-7R-1, 62-67 cm (approximately middle Campanian). The uppermost zone is characterized by dominant Paratrochamminoides spp. and in some instances common Bolivinopsis parvissimus (late Campanian to Maestrichtian). The available biostratigraphic data for the Upper Cretaceous of Sites 196, 198, 800, and 801 are correlated ... : Supplement to: Wightman, Winton G; Kuhnt, Wolfgang (1992): Biostratigraphy and paleoecology of Late Cretaceous abyssal agglutinated foraminifers from the western Pacific Ocean (Deep Sea Drilling Project Holes 196A and 198A and Ocean Drilling Program Holes 800A and 801A). In: Larson, RL; Lancelot, Y; et al. (eds.), Proceedings of the Ocean Drilling Program, Scientific Results, College Station, TX (Ocean Drilling Program), 129, 247-264 ... |
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