Latest Cretaceous/Paleocene deep-sea ostracode fauna at IODP Site 342-U1407 ...

• Main Authors: Yamaguchi, Tatsuhiko, Bornemann, André, Matsui, Hiroki, Nishi, Hiroshi
• Format: Article in Journal/Newspaper
• Language: English
• Published: PANGAEA 2017
• Subjects: Integrated Ocean Drilling Program / International Ocean Discovery Program IODP; Newfoundland; North Atlantic
• Online Access: https://dx.doi.org/10.1594/pangaea.872187; https://doi.pangaea.de/10.1594/PANGAEA.872187

During the Paleocene, the plankton community recovered its diversity after a severe diversity loss at the Cretaceous/Paleogene (K/Pg) boundary. In general, changes in Paleocene deep-sea ostracode fauna are poorly understood. It is still unclear how deep-sea ostracode fauna changed during compelling events such as the K/Pg boundary (66.04 Ma) and the Latest Danian Event (LDE: ~62.18 Ma), a transient Paleocene warming event. In this report, we describe a study on the latest Cretaceous-late Paleocene ostracodes from Integrated Ocean Drilling Program Site U1407, off Newfoundland, in the northwestern Atlantic. Thirty-four ostracode taxa were obtained from 202 discrete samples that were discretely collected from the interval between 66.3 and 57.3 Ma. Near the K/Pg boundary, 8% (2 of 24) of the Maastrichtian taxa became extinct. The extinction rate is estimated to be at most 0.12 E MSY-1, which is in the same range as the background-level extinction rate. Comparing the extinction rates between different ocean ... : Supplement to: Yamaguchi, Tatsuhiko; Bornemann, André; Matsui, Hiroki; Nishi, Hiroshi (2017): Latest Cretaceous/Paleocene deep-sea ostracode fauna at IODP Site U1407 (western North Atlantic) with special reference to the Cretaceous/Paleogene boundary and the Latest Danian Event. Marine Micropaleontology, 135, 32-44 ...