Cretaceous to Quaternary planktonic foraminifera in ODP Leg 149 holes ...

• Main Author: Gervais, Elisabeth
• Format: Article in Journal/Newspaper
• Language: English
• Published: PANGAEA 1996
• Subjects: Drilling/drill rig; Leg149; Joides Resolution; Ocean Drilling Program ODP; Klaus; Planktonic foraminifera
• Online Access: https://dx.doi.org/10.1594/pangaea.761652; https://doi.pangaea.de/10.1594/PANGAEA.761652

This paper presents the results of a biostratigraphic analysis, based on planktonic foraminifers, of Ocean Drilling Program Leg 149 Sites 897- 900 in the Iberia Abyssal Plain, off the coast of Portugal. Dissolution and changes in water-mass temperatures affect the quality of biozonation in some levels of the Pliocene, Miocene, and Paleocene/lower Eocene. Important hiatuses occur in the upper Cretaceous, Paleocene to middle/lower upper? Eocene and uppermost middle to lower upper Miocene in all the sites studied. A major hiatus in Hole 898A, spanning the Pliocene, late Miocene and the latest part of the middle Miocene, could be caused by erosion triggered by climatic cooling and/or erosion connected with middle-late Miocene local tectonic activity. ... : Supplement to: Gervais, Elisabeth (1996): Cretaceous to Quaternary planktonic foraminiferal biostratigraphy of the Iberia Abyssal Plain. In: Whitmarsh, RB; Sawyer, DS; Klaus, A & Masson, DG (eds.), Proceedings of the Ocean Drilling Program, Scientific Results, College Station, TX (Ocean Drilling Program), 149, 165-192 ...