Late Albian foraminiferal carbon and oxygen isotope data and biostratigraphic datums from ODP holes 171-1050C and 171-1052E ...

• Main Authors: Petrizzo, Maria Rose, Huber, Brian T, Wilson, Paul A, MacLeod, Kenneth G
• Format: Article in Journal/Newspaper
• Language: English
• Published: PANGAEA 2008
• Subjects: Drilling/drill rig; Leg171B; Joides Resolution; Ocean Drilling Program ODP; North Atlantic; Planktonic foraminifera
• Online Access: https://dx.doi.org/10.1594/pangaea.748728; https://doi.pangaea.de/10.1594/PANGAEA.748728

A late Albian-early Cenomanian record (~103.3 to 99.0 Ma), including organic-rich deposits and a d13C increase associated with oceanic anoxic event 1d (OAE 1d), is described from Ocean Drilling Program sites 1050 and 1052 in the subtropical Atlantic. Foraminifera are well preserved at these sites. Paleotemperatures estimated from benthic d18O values average ~14°C for middle bathyal Site 1050 and ~17°C for upper bathyal Site 1052, whereas surface temperatures are estimated to have ranged from 26°C to 31°C at both sites. Among planktonic foraminifera, there is a steady balance of speciation and extinction with no discrete time of major faunal turnover. OAE 1d is recognized on the basis of a 1.2 per mill d13C increase (~100.0-99.6 Ma), which is similar in age and magnitude to d13C excursions documented in the North Atlantic and western Tethys. Organic-rich "black shales" are present throughout the studied interval at both sites. However, deposition of individual black shale beds was not synchronous between ... : Supplement to: Petrizzo, Maria Rose; Huber, Brian T; Wilson, Paul A; MacLeod, Kenneth G (2008): Late Albian paleoceanography of the western subtropical North Atlantic. Paleoceanography, 23(1), PA1213 ...