A revised Paleocene (Teurian) dinoflagellate cyst zonation from eastern New Zealand

Crouch, Erica M.; Willumsen, Pi Suhr; Kulhanek, Denise K.; Gibbs, Samantha J.

doi:10.1016/j.revpalbo.2013.12.004

Cited by 55 publications

(69 citation statements)

References 48 publications

Supporting

Mentioning

Contrasting

Unclassified

Order By: Relevance

“…The FO of G. australiformis is thus estimated to be no older than ∼ 56.5 Ma. It should be noted that the FO of G. australiformis can be confidently placed after the PETM and the quasi-global Apectodinium acme in New Zealand (Crouch et al, 2001;Morgans et al, 2004), evidence of the biogeographical barrier the Tasmanian Gateway represents.…”

Section: Previous Stratigraphic Effortsmentioning

confidence: 99%

Identification of the Paleocene–Eocene boundary in coastal strata in the Otway Basin, Victoria, Australia

Frieling

Huurdeman

Rem

et al. 2018

J. Micropalaeontol.

View full text Add to dashboard Cite

Abstract. Detailed, stratigraphically well-constrained environmental reconstructions are available for Paleocene and Eocene strata at a range of sites in the southwest Pacific Ocean (New Zealand and East Tasman Plateau; ETP) and Integrated Ocean Discovery Program (IODP) Site U1356 in the south of the Australo-Antarctic Gulf (AAG). These reconstructions have revealed a large discrepancy between temperature proxy data and climate models in this region, suggesting a crucial error in model, proxy data or both. To resolve the origin of this discrepancy, detailed reconstructions are needed from both sides of the Tasmanian Gateway. Paleocene-Eocene sedimentary archives from the west of the Tasmanian Gateway have unfortunately remained scarce (only IODP Site U1356), and no well-dated successions are available for the northern sector of the AAG. Here we present new stratigraphic data for upper Paleocene and lower Eocene strata from the Otway Basin, southeast Australia, on the (north)west side of the Tasmanian Gateway. We analyzed sediments recovered from exploration drilling (Latrobe-1 drill core) and outcrop sampling (Point Margaret) and performed high-resolution carbon isotope geochemistry of bulk organic matter and dinoflagellate cyst (dinocyst) and pollen biostratigraphy on sediments from the regional lithostratigraphic units, including the Pebble Point Formation, Pember Mudstone and Dilwyn Formation. Pollen and dinocyst assemblages are assigned to previously established Australian pollen and dinocyst zonations and tied to available zonations for the SW Pacific. Based on our dinocyst stratigraphy and previously published planktic foraminifer biostratigraphy, the Pebble Point Formation at Point Margaret is dated to the latest Paleocene. The globally synchronous negative carbon isotope excursion that marks the Paleocene-Eocene boundary is identified within the top part of the Pember Mudstone in the Latrobe-1 borehole and at Point Margaret. However, the high abundances of the dinocyst Apectodinium prior to this negative carbon isotope excursion prohibit a direct correlation of this regional bio-event with the quasi-global Apectodinium acme at the PaleoceneEocene Thermal Maximum (PETM; 56 Ma). Therefore, the first occurrence of the pollen species Spinizonocolpites prominatus and the dinocyst species Florentinia reichartii are here designated as regional markers for the PETM. In the Latrobe-1 drill core, dinocyst biostratigraphy further indicates that the early Eocene (∼ 56-51 Ma) sediments are truncated by a ∼ 10 Myr long hiatus overlain by middle Eocene (∼ 40 Ma) strata. These sedimentary archives from southeast Australia may prove key in resolving the model-data discrepancy in this region, and the new stratigraphic data presented here allow for detailed comparisons between paleoclimate records on both sides of the Tasmanian Gateway.

show abstract

Section: Previous Stratigraphic Effortsmentioning

confidence: 99%

Identification of the Paleocene–Eocene boundary in coastal strata in the Otway Basin, Victoria, Australia

Frieling

Huurdeman

Rem

et al. 2018

J. Micropalaeontol.

View full text Add to dashboard Cite

show abstract

“…As can be seen in Figure 2A; it is present in Atlantic coast of Africa (Atta-Peters and Salami, 2006); on the southern Kerguelen Plateau (Mao and Mohr, 1992) and in Australia (Helby et al, 1987). But in New Zealand it occurs from Late Cretaceous (Roncaglia et al, 1999) to Paleocene (Crouch et al, 2014). In India, it is reported from Late Cretaceous to the Paleocene (Prasad and Pundeer, 2002;Mehrotra et al, 2005).…”

Section: Resultsmentioning

confidence: 99%

“…Paleocystodinium golzowense (Figures 2, 4L and Tables 1, 2B) presented a large geographical range extending from the Late Cretaceous to the Paleocene in New Zealand (Roncaglia et al, 1999;Willumsen and Vajda, 2010;Willumsen, 2011;Crouch et al, 2014), India (Mehrotra et al, 2012). In Antarctica, Bowman et al (2015) reported this species at the K/Pg boundary.…”

Section: Resultsmentioning

confidence: 99%

“…In the first basin the Late Cretaceous and Paleocene sediments were deposited in marine nearshore environments during a widespread marine transgressional event whereas some deposits reveal anoxic marine conditions with a strong terrestrial contribution (Willumsen, 2006). In the East Coast Basin, Late Cretaceous dinoflagellate cyst assemblages indicate a low-energy depositional environment deeper than the storm wave base (Crouch et al, 2014) whereas, Paleocene assemblages were interpreted as representative of a shallow-marine to nearshore environment (Hines et al, 2013;Crouch et al, 2014). During the Paleocene of the Great South Basin, abundant terrestrial palynomorphs in association with dinoflagellate cyst communities suggest marine nearshore depositional environments (Willumsen and Vajda, 2010).…”

Section: Paleoenvironments During the Late Cretaceous/paleocenementioning

confidence: 99%

See 1 more Smart Citation

Similarities of the K/Pc dinoflagellate cyst associations between South Atlantic and Indian proto-oceans

Menezes¹,

Garcia²,

Premaor³

et al. 2016

Geol. USP. Sér. Cient.

View full text Add to dashboard Cite

In this contribution we present the composition of the Late Cretaceous / Paleocene dinoflagellate cyst assemblages found in the Pelotas Basin, southern Brazil in order to provide a first paleobiogeographical comparison between this location, India and other former Gondwana continents: South America (Argentina and Uruguay), Africa (Nigeria and Western Ghana), Antarctica, Australia, and New Zealand. A total of 13 taxa, some endemic and other cosmopolitan were identified. The paleoenvironment of the Gondwana former members basins, as previously presented and attested by the dinoflagellate cysts are marginal marine nearshore, varying from neritic to shallow neritic and lagoonal or coastal swamps, which permitted the deposition of sediments in anoxic marine conditions. The present analysis of similarity between K/Pc dinoflagellate cyst associations allowed the establishment of paleobiogeographic distribution.

show abstract

“…We realize that the age determined by these authors [75] readjusts the age of the K/Pg boundary and will also alter the first occurrence (FO) absolute ages of the known earliest Danian index dinoflagellate species. In recent palynological work, Crouch et al [74] takes the same approach in readjusting the boundary to 66 Ma. We believe that this adjustment of the age of the K-Pg boundary downward will adjust the absolute ages determined by Williams et al [68] of Senoniasphaera inornata, Damassadinium californicum and Carpatella cornuta, but this does not alter the observations of these authors that the FO of S. inornata, and subsequent FOs of D. californicum and C. cornuta takes place after the K-Pg boundary event.…”

Section: Results: Marine Palynomorph Occurrencesmentioning

confidence: 99%

Cretaceous-Paleogene Dinoflagellate Biostratigraphy and the Age of the Clayton Formation, Southeastern Missouri, USA

2014

View full text Add to dashboard Cite

Sedimentary deposits in Stoddard County, southeastern Missouri, reveal a K-Pg transition sequence represented by the uppermost Maastrichtian Owl Creek Formation and the Paleocene Clayton Formation. The Clayton Formation is characterized by a basal fossiliferous coquinite that contains reworked late Maastrichtian macrofossils. Dinoflagellate biostratigraphy is used to determine the age of the coquinite layer and specifically whether or not it is an end-K tsunamite deposit resulting from the Chicxulub impact event. Results indicate a mixed assemblage of late Maastrichtian and early Danian dinocysts within the basal coquinite of the Clayton Formation. Maastrichtian dinocyst taxa identified are Riculacysta amplexa, Pierceites pentagonus, Phelodinium tricuspe and Dinogymnium sp. and dinocysts utilized as global indicators of the basal Danian, also present in the coquinite, consist of Senoniasphaera inornata, Carpatella cornuta, Damassadinium californicum, and Lanternosphaeridium reinhardtii. A gray mud occurring above the coquinite in the middle of the Clayton Formation contains the mid-Danian dinoflagellate Senegalinium iterlaaense. Collectively, these data suggest that the coquinite was deposited well after the K-Pg event but before the middle Danian. The mixed assemblage of Late Cretaceous and Paleocene dinocysts preserved in the coquinite weakens the hypothesis that it is an end-K tsunamite deposit and suggests instead that it may result from a long-term transgressive lag. We also extend the stratigraphic range of the Paleocene Senegalinium simplex downward into the uppermost Maastrichtian. OPEN ACCESSGeosciences 2014, 4 2

show abstract

A revised Paleocene (Teurian) dinoflagellate cyst zonation from eastern New Zealand

Cited by 55 publications

References 48 publications

Identification of the Paleocene–Eocene boundary in coastal strata in the Otway Basin, Victoria, Australia

Identification of the Paleocene–Eocene boundary in coastal strata in the Otway Basin, Victoria, Australia

Similarities of the K/Pc dinoflagellate cyst associations between South Atlantic and Indian proto-oceans

Cretaceous-Paleogene Dinoflagellate Biostratigraphy and the Age of the Clayton Formation, Southeastern Missouri, USA

Contact Info

Product

Resources

About