High latitude stratigraphical palynology of the Jurassic-Cretaceous boundary interval, Sverdrup Basin, Arctic Canada

S. Ingrams; D. W. Jolley; S. Schneider

doi:10.1016/j.cretres.2021.104922

High latitude stratigraphical palynology of the Jurassic-Cretaceous boundary interval, Sverdrup Basin, Arctic Canada

S. Ingrams^*, D. W. Jolley, S. Schneider

^*Corresponding author for this work

CASP

Research output: Contribution to journal › Article › peer-review

3 Citations (Scopus)

Abstract

The Rollrock Section on northern Ellesmere Island (Arctic Canada) exposes a continuous succession of Upper Jurassic to Lower Cretaceous strata, of which 537 m were logged and sampled at 1.5 m intervals for palynological analysis. Consequently, these strata form one of the most comprehensive archives of Arctic biostratigraphy of the Jurassic-Cretaceous boundary interval. As such, their occurrence is valuable to our understanding of high latitude climate change and floral turnover over this poorly defined boundary. Previous macrofossil studies indicate a shallow, distal depositional environment for the succession. Palynomorph assemblages from the Rollrock Section display a sequence of palynostratigraphic events stretching from the Oxfordian to the early Valanginian. The dinocyst taxa reported in this study enable the division of the section into seven distinct biozones, as defined by first occurrences of Para-gonyaulacysta capillosa, Prolixosphaeridiopsis spissa, Trichodinium erinaceoides, Oligosphaeridium complex, and Muderongia simplex, and the last occurrences of Gonyaulacysta jurassica adecta and Rhynchodiniopsis cladophora. The palynostratigraphic events displayed have enabled modifications to existing biostrati-graphic schemes. Provincialism and the lack of a defined Jurassic-Cretaceous boundary complicate at-tempts at global correlation. The base of the Valanginian marks the first palynological event in the Cretaceous, which can be correlated across the Boreal Realm, with potential correlation to biological events in the Tethyan Realm. (c) 2021 Elsevier Ltd. All rights reserved.

Original language	English
Article number	104922
Number of pages	15
Journal	Cretaceous Research
Volume	126
Early online date	5 Jul 2021
DOIs	https://doi.org/10.1016/j.cretres.2021.104922
Publication status	Published - 1 Oct 2021

Bibliographical note

Acknowledgements: The authors would like to thank the following people and institutions for their valuable support: Sylvie LeBlanc (Department of Culture and Heritage, Iglooik, Canada); Jane Chisholm and rangers of Parks Canada (Iqaluit and Tanquary Camp, Canada); John Innis (Universal Helicopters); the staff of Polar Continental Shelf Programme at Resolute Bay (Canada). Fellow geologists Berta Lopez-Mir and Peter Hülse (both CASP, Cambridge, UK) participated in fieldwork in 2015. The help of field assistant Alex Chavanne (California, USA) with logging and sampling the Rollrock Section was instrumental. Ashton F. Embry (Geological Survey of Canada, Calgary) kindly shared unpublished information. Dave Bodman of MB Stratigraphy Ltd. (Sheffield, UK) prepared part of the palynological slides used in this study. CASP's industry sponsors are acknowledged for their funding of the Canadian Arctic Islands Project. The authors would also like to thank reviewers Kasia K. Śliwińska (Geological Survey of Denmark and Greenland, Copenhagen, Denmark) and Jennifer Galloway (Carleton University, Ottawa, Canada) for their constructive criticism of this paper and editor-in-chief Eduardo Koutsoukos (University of Heidelberg, Germany) for his careful editing.

Keywords

Dinocysts
Biostratigraphy
Boreal Realm
Oppel zones
Endemism

UN SDGs

This output contributes to the following UN Sustainable Development Goals (SDGs)

Access to Document

10.1016/j.cretres.2021.104922Licence: Unspecified

Cite this

@article{0f24b84c1e2845a09f83ebd8bd9c104d,

title = "High latitude stratigraphical palynology of the Jurassic-Cretaceous boundary interval, Sverdrup Basin, Arctic Canada",

abstract = "The Rollrock Section on northern Ellesmere Island (Arctic Canada) exposes a continuous succession of Upper Jurassic to Lower Cretaceous strata, of which 537 m were logged and sampled at 1.5 m intervals for palynological analysis. Consequently, these strata form one of the most comprehensive archives of Arctic biostratigraphy of the Jurassic-Cretaceous boundary interval. As such, their occurrence is valuable to our understanding of high latitude climate change and floral turnover over this poorly defined boundary. Previous macrofossil studies indicate a shallow, distal depositional environment for the succession. Palynomorph assemblages from the Rollrock Section display a sequence of palynostratigraphic events stretching from the Oxfordian to the early Valanginian. The dinocyst taxa reported in this study enable the division of the section into seven distinct biozones, as defined by first occurrences of Para-gonyaulacysta capillosa, Prolixosphaeridiopsis spissa, Trichodinium erinaceoides, Oligosphaeridium complex, and Muderongia simplex, and the last occurrences of Gonyaulacysta jurassica adecta and Rhynchodiniopsis cladophora. The palynostratigraphic events displayed have enabled modifications to existing biostrati-graphic schemes. Provincialism and the lack of a defined Jurassic-Cretaceous boundary complicate at-tempts at global correlation. The base of the Valanginian marks the first palynological event in the Cretaceous, which can be correlated across the Boreal Realm, with potential correlation to biological events in the Tethyan Realm. (c) 2021 Elsevier Ltd. All rights reserved.",

keywords = "Dinocysts, Biostratigraphy, Boreal Realm, Oppel zones, Endemism",

author = "S. Ingrams and Jolley, {D. W.} and S. Schneider",

note = "Acknowledgements: The authors would like to thank the following people and institutions for their valuable support: Sylvie LeBlanc (Department of Culture and Heritage, Iglooik, Canada); Jane Chisholm and rangers of Parks Canada (Iqaluit and Tanquary Camp, Canada); John Innis (Universal Helicopters); the staff of Polar Continental Shelf Programme at Resolute Bay (Canada). Fellow geologists Berta Lopez-Mir and Peter H{\"u}lse (both CASP, Cambridge, UK) participated in fieldwork in 2015. The help of field assistant Alex Chavanne (California, USA) with logging and sampling the Rollrock Section was instrumental. Ashton F. Embry (Geological Survey of Canada, Calgary) kindly shared unpublished information. Dave Bodman of MB Stratigraphy Ltd. (Sheffield, UK) prepared part of the palynological slides used in this study. CASP's industry sponsors are acknowledged for their funding of the Canadian Arctic Islands Project. The authors would also like to thank reviewers Kasia K. {\'S}liwi{\'n}ska (Geological Survey of Denmark and Greenland, Copenhagen, Denmark) and Jennifer Galloway (Carleton University, Ottawa, Canada) for their constructive criticism of this paper and editor-in-chief Eduardo Koutsoukos (University of Heidelberg, Germany) for his careful editing.",

year = "2021",

month = oct,

day = "1",

doi = "10.1016/j.cretres.2021.104922",

language = "English",

volume = "126",

journal = "Cretaceous Research",

issn = "0195-6671",

publisher = "Academic Press Inc.",

}

TY - JOUR

T1 - High latitude stratigraphical palynology of the Jurassic-Cretaceous boundary interval, Sverdrup Basin, Arctic Canada

AU - Ingrams, S.

AU - Jolley, D. W.

AU - Schneider, S.

N1 - Acknowledgements: The authors would like to thank the following people and institutions for their valuable support: Sylvie LeBlanc (Department of Culture and Heritage, Iglooik, Canada); Jane Chisholm and rangers of Parks Canada (Iqaluit and Tanquary Camp, Canada); John Innis (Universal Helicopters); the staff of Polar Continental Shelf Programme at Resolute Bay (Canada). Fellow geologists Berta Lopez-Mir and Peter Hülse (both CASP, Cambridge, UK) participated in fieldwork in 2015. The help of field assistant Alex Chavanne (California, USA) with logging and sampling the Rollrock Section was instrumental. Ashton F. Embry (Geological Survey of Canada, Calgary) kindly shared unpublished information. Dave Bodman of MB Stratigraphy Ltd. (Sheffield, UK) prepared part of the palynological slides used in this study. CASP's industry sponsors are acknowledged for their funding of the Canadian Arctic Islands Project. The authors would also like to thank reviewers Kasia K. Śliwińska (Geological Survey of Denmark and Greenland, Copenhagen, Denmark) and Jennifer Galloway (Carleton University, Ottawa, Canada) for their constructive criticism of this paper and editor-in-chief Eduardo Koutsoukos (University of Heidelberg, Germany) for his careful editing.

PY - 2021/10/1

Y1 - 2021/10/1

N2 - The Rollrock Section on northern Ellesmere Island (Arctic Canada) exposes a continuous succession of Upper Jurassic to Lower Cretaceous strata, of which 537 m were logged and sampled at 1.5 m intervals for palynological analysis. Consequently, these strata form one of the most comprehensive archives of Arctic biostratigraphy of the Jurassic-Cretaceous boundary interval. As such, their occurrence is valuable to our understanding of high latitude climate change and floral turnover over this poorly defined boundary. Previous macrofossil studies indicate a shallow, distal depositional environment for the succession. Palynomorph assemblages from the Rollrock Section display a sequence of palynostratigraphic events stretching from the Oxfordian to the early Valanginian. The dinocyst taxa reported in this study enable the division of the section into seven distinct biozones, as defined by first occurrences of Para-gonyaulacysta capillosa, Prolixosphaeridiopsis spissa, Trichodinium erinaceoides, Oligosphaeridium complex, and Muderongia simplex, and the last occurrences of Gonyaulacysta jurassica adecta and Rhynchodiniopsis cladophora. The palynostratigraphic events displayed have enabled modifications to existing biostrati-graphic schemes. Provincialism and the lack of a defined Jurassic-Cretaceous boundary complicate at-tempts at global correlation. The base of the Valanginian marks the first palynological event in the Cretaceous, which can be correlated across the Boreal Realm, with potential correlation to biological events in the Tethyan Realm. (c) 2021 Elsevier Ltd. All rights reserved.

AB - The Rollrock Section on northern Ellesmere Island (Arctic Canada) exposes a continuous succession of Upper Jurassic to Lower Cretaceous strata, of which 537 m were logged and sampled at 1.5 m intervals for palynological analysis. Consequently, these strata form one of the most comprehensive archives of Arctic biostratigraphy of the Jurassic-Cretaceous boundary interval. As such, their occurrence is valuable to our understanding of high latitude climate change and floral turnover over this poorly defined boundary. Previous macrofossil studies indicate a shallow, distal depositional environment for the succession. Palynomorph assemblages from the Rollrock Section display a sequence of palynostratigraphic events stretching from the Oxfordian to the early Valanginian. The dinocyst taxa reported in this study enable the division of the section into seven distinct biozones, as defined by first occurrences of Para-gonyaulacysta capillosa, Prolixosphaeridiopsis spissa, Trichodinium erinaceoides, Oligosphaeridium complex, and Muderongia simplex, and the last occurrences of Gonyaulacysta jurassica adecta and Rhynchodiniopsis cladophora. The palynostratigraphic events displayed have enabled modifications to existing biostrati-graphic schemes. Provincialism and the lack of a defined Jurassic-Cretaceous boundary complicate at-tempts at global correlation. The base of the Valanginian marks the first palynological event in the Cretaceous, which can be correlated across the Boreal Realm, with potential correlation to biological events in the Tethyan Realm. (c) 2021 Elsevier Ltd. All rights reserved.

KW - Dinocysts

KW - Biostratigraphy

KW - Boreal Realm

KW - Oppel zones

KW - Endemism

U2 - 10.1016/j.cretres.2021.104922

DO - 10.1016/j.cretres.2021.104922

M3 - Article

SN - 0195-6671

VL - 126

JO - Cretaceous Research

JF - Cretaceous Research

M1 - 104922

ER -

High latitude stratigraphical palynology of the Jurassic-Cretaceous boundary interval, Sverdrup Basin, Arctic Canada

Abstract

Bibliographical note

Keywords

UN SDGs

Access to Document

Fingerprint

Cite this