Vergnaud-Grazzini, C. et al. (1994): A refined Pliocene to early Pleistocene chronostratigraphic frame at ODP Hole 653A (West Mediterranean)

Leg/Site/Hole:
ODP 107
ODP 107 653
Identifier:
1994-025894
georefid

Creator:
Vergnaud-Grazzini, C.
Institut de Physique du Globe, Laboratoire d'Oceanographie Dynamique et de Climatologie, Paris, France
author

Capotondi, Lucilla
Universita di Parma, Parma, Italy
author

Lourens, Lucas
Institute of Earth Sciences, Utrecht, Netherlands
author

Identification:
A refined Pliocene to early Pleistocene chronostratigraphic frame at ODP Hole 653A (West Mediterranean)
1994
Marine Geology
Elsevier, Amsterdam, Netherlands
117
1-4
329-349
Two planktonic foraminiferal oxygen isotope records of ODP Hole 653A (Tyrrhenian Sea) are presented for the time period extending from approximately 0.8 to 3.0 Ma. Six, generally accepted, synchronous bioevents were used to precise the oxygen isotope chronology and to identify the oxygen isotope stages 22 down to 114. Subsequently, this oxygen isotope chronology was used to determine the synchronism or diachronism of various other biostratigraphic events with those recorded in the Singa and Ficarazzi land sections (Italy) and those in other DSDP/ODP sites. New results concern the diachronity of the FOD of the planktonic foraminiferal species N. atlantica, G. truncatulinoides truncatulinoides and G. inflata between ODP Hole 653A and the Italian landsections. Because many species entered the Mediterranean in short term fluxes, strongly related to the southward migration of cool North Atlantic surface waters, their time distribution through the Pliocene-Pleistocene generally corresponds to alternated intervals of presence and absence. This should explain most of the apparently diachronous appearances and disappearances. Alternating presence-absence patterns are of less importance for the various nannofossil events. The LOD of D. surculus occurs during the transition of stage 100 to 101 in both ODP Hole 653A and the Singa section, which is in perfect agreement with the disappearance of this species from the open ocean. The LOD of D. pentaradiatus in the Mediterranean occurs in stages 100-99, which seems to be consistent with the extinction of this species in the southern Hemisphere. G. oceanica, which corresponds to the 4m<Gephyrocapsa spp<5.5m is recorded in stages 65 to 64 at ODP Hole 653A. The Gephyrocapsa spp.>5.5m first occurred in stage 51 at Hole 653A, which fits within the uncertainty interval for this event stretching from stage 51 to 47 in the open ocean and seems therefore a useful tool for conventional biostratigraphy in the Mediterranean.
English
Serial
Coverage:Geographic coordinates:
North:43.0000
West:9.3000East: 16.0000
South:38.0000

Stratigraphy; algae; biostratigraphy; calibration; Cenozoic; chronostratigraphy; cores; correlation; extinction; Foraminifera; Invertebrata; isotope ratios; isotopes; Leg 107; lower Pleistocene; Mediterranean Sea; microfossils; nannofossils; Neogene; O-18/O-16; Ocean Drilling Program; ODP Site 653; oxygen; planktonic taxa; Plantae; Pleistocene; Pliocene; Protista; Quaternary; stable isotopes; stratigraphic boundary; Tertiary; thallophytes; Tyrrhenian Sea; upper Pliocene; West Mediterranean;

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