Calcareous plankton events at the early/middle Miocene transition of DSDP Hole 608; comparison with Mediterranean successions for the definition of the Langhian GSSP

Author(s): Di Stefano, Agata; Verducci, Marina; Cascella, Antonio; Iaccarino, Silvia Maria
Author Affiliation(s): Primary:
Universita di Catania, Dipartimento di Scienze Geologiche, Catania, Italy
Universita di Catania, Italy
Universita di Siena, Italy
Istituto Nazionale di Geofisica e Vulcanologia, Italy
Universita di Parma, Italy
Volume Title: Progress toward the definition of the Global Stratotype Section and Point of the Langhian Stage
Volume Author(s): Iaccarino, Silvia Maria, editor; Di Stefano, Agata; Turco, Elena
Source: Progress toward the definition of the Global Stratotype Section and Point of the Langhian Stage, edited by Silvia Maria Iaccarino, Agata Di Stefano and Elena Turco. Stratigraphy, 8(2-3), p.145-161. Publisher: Micropaleontology Press, New York, NY, United States. ISSN: 1547-139X
Note: In English. 61 refs.; illus., incl. strat. col., 2 plates, 3 tables, sketch map
Summary: We propose a revision of the calcareous plankton biostratigraphy of the upper Burdigalian/early Langhian interval (Early/Middle Miocene) of the DSDP Hole 608 succession (northeastern Atlantic Ocean), one of the most complete open-ocean Miocene sequences. We detected a set of calcareous plankton events through a 26 m thick succession (320-346 mbsf), spanning the interval from 14.969 to 17.268 Ma, chronologically constrained through paleomagnetic and astrochronological data. "Standard" bioevents were tested and in some cases they resulted poorly applicable to the investigated succession. Conversely, the quantitative biostratigraphic analysis highlighted additional biohorizons (Helicosphaera ampliaperta Last Common Occurrence, Sphenolithus heteromorphus Paracme Interval, Paragloborotalia siakensis Acme "a") considered till now restricted to the Mediterranean region. This results in a better applicability of Mediterranean zonal schemes, providing a higher biostratigraphic resolution. Our results point out strict affinity between Atlantic and Mediterranean successions in Early/Middle Miocene. Thus, in the perspective of establishing the Langhian GSSP, that according to the historical criterion must be located in the Mediterranean region, our results provide significant correlation tools between Mediterranean and open-ocean successions.
Year of Publication: 2011
Research Program: DSDP Deep Sea Drilling Project
IPOD International Phase of Ocean Drilling
Key Words: 12 Stratigraphy, Historical Geology and Paleoecology; Algae; Assemblages; Atlantic Ocean; Biostratigraphy; Burdigalian; Cenozoic; DSDP Site 608; Deep Sea Drilling Project; Foraminifera; IPOD; Invertebrata; Langhian; Leg 94; Lithostratigraphy; Lower Miocene; Microfossils; Middle Miocene; Miocene; Morphology; Nannofossils; Neogene; North Atlantic; Northeast Atlantic; Planktonic taxa; Plantae; Protista; Stratigraphic boundary; Tertiary
Coordinates: N425012 N425013 W0230515 W0230515
Record ID: 2012062848
Copyright Information: GeoRef, Copyright 2017 American Geosciences Institute.