Maastrichtian to Paleocene dinocysts from the Clarence Valley, South Island, New Zealand

Willumsen, Pi Suhr

doi:10.1080/03115518.2010.494484

Cited by 29 publications

(37 citation statements)

References 51 publications

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“…Foraminiferal and radiolarian datums are from Hollis and Strong (2003). Dinoflagellate datums are from Willumsen (2004Willumsen ( , 2011Willumsen ( , 2012 and Crouch et al (2014). Geochemical profiles include calcium carbonate concentration (A) and concentrations of Ni (B), Zn (C), Cr and Fe (D) normalised to Ti to account for terrigenous sources.…”

Section: Figure 2 Stratigraphy and Geochemical Profiles For The Uppementioning

confidence: 99%

“…Despite the scarcity of calcareous microfossils and radiolarians in the mid-Waipara section, Hollis and Strong (2003) were able to identify planktic foraminiferal zones P0, P and P1a-c and radiolarian zones RP1 to RP3. In contrast, dinoflagellates are abundant and wellpreserved throughout the section Willumsen, 2004;2006, 2012 and dinoflagellate biostratigraphy provides the primary age control and to correlate with the bathyal sections in Marlborough (Willumsen, 2011;Crouch et al, 2014), complemented by planktic foraminiferal and radiolarian bioevents (Fig. 2).…”

Section: Biostratigraphy and Palynologymentioning

confidence: 99%

“…Importantly, the dinoflagellate succession can be correlated to two bathyal K/Pg boundary sections in eastern Marlborough, Branch and Mead Streams ( Fig. 1), utilising a new Paleocene dinoflagellate zonation (Crouch et al, 2014) and a well-defined succession of early Paleocene acme events (Willumsen, 2004(Willumsen, , 2006(Willumsen, , 2011Willumsen & Vajda, 2010b). Collectively, these data allow us to reconstruct climatic and oceanic changes through the K/Pg boundary transition in the mid-latitude southwest Pacific.…”

Section: Introductionmentioning

confidence: 99%

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South Pacific evidence for the long-term climate impact of the Cretaceous/Paleogene boundary event

Taylor

Willumsen

Hollis

et al. 2018

Earth-Science Reviews

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The Cretaceous/Paleogene (K/Pg) boundary is well-represented across a range of depositional settings in New Zealand. Trends in fossil assemblages and marine lithofacies indicate that the K/Pg event was followed by a pronounced and long-term (~1 Myr) perturbation in climate and ocean conditions. These findings are supported by a TEX86derived sea surface temperature (SST) reconstruction across the K/Pg boundary at mid-Waipara River, north Canterbury. The BAYSPAR calibration indicates that SST was very stable in the uppermost Cretaceous (~20°C), but abruptly warmed by ~4°C in a 25 cm-thick lowermost Paleocene interval. This interval is overlain by a ~2 m thick interval in which SST abruptly cooled by ~10°C and then progressively returned to ~20°C. The basal Paleocene warm interval is associated with an acme in the dinoflagellate species Trithyrodinium evittii and the succeeding cool interval is associated with an acme in Palaeoperidinium pyrophorum. Biostratigraphic correlation of the shelfal mid-Waipara section to the pelagic K/Pg sections in Marlborough reveals that a significant unconformity separates these two acme events, with the T acme event occurring in the earliest Paleocene and the P. pyrophorum acme occurring ~1 Myr later and lasting ~200 kyr. A succession of dinoflagellate acme events within the intervening interval in the Marlborough sections implies unstable climatic and environmental conditions in the lead up to the P. pyrophorum acme and cooling event at ~65 Ma. This event also coincides with a peak in biogenic silica accumulation in the Marlborough sections. We suggest that disruption to biogeochemical pathways at the K/Pg boundary caused long-term climatic cooling in the southern Pacific region.

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Section: Figure 2 Stratigraphy and Geochemical Profiles For The Uppementioning

confidence: 99%

Section: Biostratigraphy and Palynologymentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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South Pacific evidence for the long-term climate impact of the Cretaceous/Paleogene boundary event

Taylor

Willumsen

Hollis

et al. 2018

Earth-Science Reviews

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“…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%

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.

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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.

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“…Biostratigraphical stud ies of this bound ary based on the dinoflagellate cysts have been made at sev eral Tethyan (Brinkhuis and Zachariasse, 1988;Gedl, 2004;Egger and Mohamed, 2010;Slimani et al, 2010Slimani et al, , 2016Mohamed et al, 2012M'Hamdi et al, 2013;Mohamed and Wagreich, 2013;Slimani and Toufiq, 2013;Guédé et al, 2014) and bo real (Hansen, 1977;Moshkovitz and Habib, 1993;Brinkhuis and SchiÝler, 1996;Habib et al, 1996;Slimani, 2001;Slimani et al, 2011) geo log i cal sec tions. Other K-Pg sec tions are from New Zea land (Willumsen, 2004(Willumsen, , 2011 in the South ern Hemi sphere.…”

Section: Introductionmentioning

confidence: 99%

Dinoflagellate cysts and palynofacies across the Cretaceous-Paleogene boundary interval of the Vrancea Nappe (Eastern Carpathians, Romania)

Ţabără

Slimani

2016

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(2) a dis con ti nu ity be tween the two for ma tions. The palynofacies anal y sis from this geo log i cal sec tion in di cates an abun dance of con ti nen tal or ganic mat ter (mainly opaque phytoclasts), de pos ited in a dis tal set ting of the sed i men tary ba sin. The oc cur rences in the palynological as sem blage of some oce anic dinocyst taxa such as Impagidinium and Pterodinium sug gest the same depositional en vi ron ment for the geo log i cal for ma tions ana lysed.

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Maastrichtian to Paleocene dinocysts from the Clarence Valley, South Island, New Zealand

Cited by 29 publications

References 51 publications

South Pacific evidence for the long-term climate impact of the Cretaceous/Paleogene boundary event

South Pacific evidence for the long-term climate impact of the Cretaceous/Paleogene boundary event

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

Dinoflagellate cysts and palynofacies across the Cretaceous-Paleogene boundary interval of the Vrancea Nappe (Eastern Carpathians, Romania)

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