Age models for glacial fan deposits off East Greenland and Svalbard (Sites 986 and 987)

Channell, J. E. T.; Smelror, Morten; Jansen, Eystein; Higgins, Sean M.; Lehman, B.; Eidvin, Tor; Solheim, Anders

doi:10.2973/odp.proc.sr.162.008.1999

Cited by 32 publications

(35 citation statements)

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“…Poulsen et al (1996) recorded most of the taxa discussed here, but usually in a few samples only. Moreover, the age assignments of their three provisional biozones are not consistent with age estimates calculated by Channell et al (1999b) based on the well-defined magnetostratigraphy of ODP Hole 987E. Nonetheless, occurrences of important taxa reported by Poulsen et al (1996) are discussed in the text where appropriate.…”

Section: Magnetostratigraphic Calibration Of Dinocyst Eventsmentioning

confidence: 73%

“…For Iceland Sea ODP Hole 987E, an HO is recorded within the upper Tortonian at c. 7.4 Ma (M. Smelror, pers. commun., 2007;Channell et al, 1999b), although this species was recorded at the base of the cored interval, so it is impossible to know whether the HO represents a continuous or isolated occurrence. Within the high-latitude North Atlantic region, the lowest HO recorded is from ODP Site 643 in the Norwegian Sea and has an estimated age of c. 13.6 Ma (lower Serravallian).…”

Section: Tortonian (Late Miocene)mentioning

confidence: 99%

“…In Norwegian Sea ODP Hole 643A, its HO is at c. 7.6 Ma (Subchron C4n.1n, Mudie, 1989;Manum et al, 1989;Bleil, 1989), and is at c. 7.2 Ma (Subchron C3Bn, Channell et al, 1999b) in Iceland Sea ODP Hole 987E (M. Smelror, pers. commun., 2007).…”

Section: Tortonian (Late Miocene)mentioning

confidence: 99%

“…For the Pliocene, good paleomagnetic age control is available for Iceland Sea ODP Hole 987E (Channell et al, 1999b), Norwegian Sea ODP Site 642 (Bleil, 1989), eastern North Atlantic DSDP Holes 610A (Clement and Robinson, 1987; and 400/400A (Hailwood, 1979), central North Atlantic DSDP Hole 607/607A (Clement and Robinson, 1987), and western North Atlantic DSDP Hole 603C (Canninga et al, 1987). For the Miocene, magnetostratigraphic age control is provided only for Norwegian Sea ODP sites 642 and 643 (Bleil, 1989), and eastern North Atlantic IODP Site U1318 (Louwye et al, 2007b).…”

Section: Chronostratigraphic Summary Of Sites Used For Comparisonmentioning

confidence: 99%

“…It is uncertain whether specimens above the HCO are reworked. Judging from the above records, an HO recorded within the Matuyama Chron in Fram Strait ODP Hole 986D (Smelror, 1999;Channell et al, 1999b) must represent reworking. In the Tjörnes beds of Iceland, the HO is recorded in the mid-Zanclean (Verhoeven et al, 2011).…”

Section: Messinian (Late Miocene)mentioning

confidence: 99%

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A magnetostratigraphic calibration of Middle Miocene through Pliocene dinoflagellate cyst and acritarch events in the Iceland Sea (Ocean Drilling Program Hole 907A)

Schreck

Matthießen

Head

2012

Review of Palaeobotany and Palynology

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A detailed dinoflagellate cyst investigation of the almost continuous Middle Miocene through Pliocene of Ocean Drilling Program Hole 907A in the Iceland Sea has been conducted at 100-kyr resolution. The investigated section is well constrained by magnetostratigraphy, providing for the first time an independent temporal control on a succession of northern high-latitude dinoflagellate cyst bioevents. Based on the highest/lowest occurrences (HO/LO) and highest common occurrence (HCO) of 20 dinoflagellate cyst taxa and one acritarch species, 26 bioevents have been defined and compared with those recorded at selected DSDP, ODP, and IODP sites from the North Atlantic and contiguous seas, and in outcrops and boreholes from the onshore and offshore eastern U.S.A., and the North Sea and Mediterranean basins. Comparisons reveal near-synchronous HOs of the dinoflagellate cysts Batiacasphaera micropapillata (3.8-3.4 Ma, mid-Pliocene) and Reticulatosphaera actinocoronata (4.8-4.2 Ma, Lower Pliocene) across the Nordic Seas and North Atlantic, highlighting their value on a supraregional scale. This probably applies also to Hystrichosphaeropsis obscura (upper Tortonian), when excluding ODP Hole 907A where its sporadic upper stratigraphic range presumably relates to cooling in the early Tortonian. Over a broader time span within the upper Tortonian, the HO of Operculodinium piaseckii likely also permits correlation across the Nordic Seas and North Atlantic, and the HO of Labyrinthodinium truncatum appears useful in the Labrador and Nordic Seas. Biostratigraphic markers useful for regional rather than supraregional correlation are the HOs of Batiacasphaera hirsuta (c. 8.4 Ma, upper Tortonian) and Unipontidinium aquaeductus (c. 13.6-13.9 Ma, upper Langhian), the HCO of the acritarch Decahedrella martinheadii (c. 6.7-6.3 Ma, Messinian), and possibly the LO of Cerebrocysta irregulare sp. nov. (c. 13.8 Ma, uppermost Langhian) across the Nordic Seas. Since Habibacysta tectata, B. micropapillata, R. actinocoronata and D. martinheadii have been observed in the Arctic Ocean, they are potentially useful for high latitude correlations in the polar domain. The LOs of Habibacysta tectata and Unipontidinium aquaeductus suggest a mid-to late Langhian age (15.1-13.7 Ma) for deposits at the base of Hole 907A, thus providing new constraints on the age of basalts at the base of ODP Hole 907A. The stratigraphically important dinoflagellate cysts Cerebrocysta irregulare sp. nov., and Impagidinium elongatum sp. nov. are formally described.

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Section: Magnetostratigraphic Calibration Of Dinocyst Eventsmentioning

confidence: 73%

Section: Tortonian (Late Miocene)mentioning

confidence: 99%