NWAM

LOWER TERTIARY STRATIGRAPHY AND PLAYS OF OFFSHORE EASTERN CANADA AND WEST GREENLAND (NWAM)

NWAM new namedSome figures from this report are included as free downloads on this page.

Click on the arrows below for an outline and contents of the study.

Please contact Dr Jonathan Bujak for further details.

BACKGROUND

OUTLINE

This companion report to our NEAM study was undertaken jointly by Bujak Research and David Mudge Associates on the Lower Tertiary stratigraphy and hydrocarbon plays of the Northwest Atlantic margin, comprising Baffin Bay, West Greenland, Labrador Shelf, the Northeast Newfoundland Basin, Grand Banks and the Scotian Shelf.

A database of 56 representative wells was used for biostratigraphic and sequence stratigraphic analysis, which formed the basis for a consistent chronostratigraphy that can be applied to the whole of the Northwest Atlantic margin. Individual well charts show electric log traces, sequences, stratigraphic surfaces, lithofacies and rock units calibrated with biostratigraphic, oceanographic, climatic, tectonic and volcanic data. Stratigraphic data from sections in the Nuussuaq Basin, onshore West Greenland are also included.

This framework has been used to identify hydrocarbon plays. Paleogeographic maps have been produced for each play showing reservoir distribution, clastic source areas, tectonic lineaments, volcanics and the distribution of shelf, slope and basinal sediments. Data on source rock quality and maturity have been plotted for Labrador Shelf and offshore West Greenland wells.

SCOPE OF THE STUDY

The report provides extensive documentation of the tectonic, oceanographic, depositional, biotic and climatic development of the northwest Atlantic region, which was strongly affected by the Greenland mantle plume. Late Palaeocene uplift of the dome isolated the ‘Baffin Bay System’ from the ‘North Atlantic System’, and subsequent collapse of the mantle plume resulted in the circum North Atlantic ‘Near Base Eocene Transgressive Event’.

The regional biotas were also controlled by increased temperatures due to the emission of carbon dioxide greenhouse gases by volcanic activity across a huge area centered on Greenland. This triggered the release of methane clathrates (aka gas hydrates) from sediments, resulting in the Paleocene Eocene Thermal Maximum (PETM), also known as the Early Eocene Thermal Maximum (EETM), which strongly affected biotas across the region.

Following the late Early Eocene (Ypresian) Arctic Azolla Event, global climate moved from greenhouse towards icehouse in a series of cooling steps that are reflected by biotic changes across the circum North Atlantic. The Baffin Basin System had a cooler surface-water (SST) regime than the North Atlantic System during the Eocene, so that the stratigraphic ranges of temperature-sensitive species differ in the two areas.

The Baffin Basin System also had more restricted foraminiferal biotas than those of the North Atlantic System due to basin configuration. These differences, and their effect on the biostratigraphy across the entire North Atlantic region, is fully documented and extensively illustrated in the report.

Despite these localized differences, uplift and collapse of the Greenland Mantle Plume, and subsequent Eocene tectonic events resulted in a succession of coeval Palaeocene-Eocene sequence stratigraphic surfaces that can be traced across the Northeast Atlantic region, as well as the Northwest Atlantic region documented in our NEAM study.

The four volume large-format NWAM report includes a comprehensive database of sequence and biostratigraphic picks, and is extensively illustrated by detailed figures and illustrations of well sections.

VOLUME 1: TEXT

Summary

  1. Introduction

1.1       Area of study

1.2       Objectives

1.3       Database and methodology

1.4       North Atlantic stratigraphic framework

  1. North Atlantic regional framework

2.1       Chronostratigraphy

2.2       Plate tectonic setting

2.3       Paleoceanography

2.4       Tectonic and magmatic stratigraphy

2.5       Paleoclimate

2.6       Biotic development of the North Atlantic system

  1. Offshore Eastern Canada and West Greenland stratigraphic framework

3.1       Introduction

3.2       Biostratigraphy

3.3       Stratigraphic surfaces

3.4       Biostratigraphic intervals

3.5       Stratigraphic sequences

3.6       Lithostratigraphy

  1. Regional geology

4.1       Baffin Bay and West Greenland

4.2       Offshore Labrador

4.3       Grand Banks and Northeast Newfoundland Shelf

4.4       Scotian Shelf

  1. Hydrocarbon plays

5.1       Introduction

5.2       Baffin Bay and West Greenland

5.3       Offshore Labrador

5.4       Grand Banks and Northeast Newfoundland Shelf

5.5       Scotian Shelf

  1. Bibliography

VOLUMES 2 AND 3: FIGURES

  1. Introduction

1.1       Offshore eastern Canada and West Greenland study area

1.2              Offshore eastern Canada and West Greenland well location

1.3              Baffin Bay and West Greenland bathymetry

1.4              Baffin Bay and West Greenland well location

1.5              Offshore Labrador bathymetry

1.6              Offshore Labrador well location

1.7              Scotian Shelf and Grand Banks bathymetry

1.8              Scotian Shelf and Grand Banks well location

1.9              North Atlantic stratigraphic framework

  1. North Atlantic regional framework

            Chronostratigraphy

2.1       North Atlantic biostratigraphy

Plate tectonic setting

2.2       Late Cretaceous plate tectonic setting

2.3       Early Paleocene plate tectonic setting

2.4       Late Paleocene plate tectonic setting

2.5       Early Eocene plate tectonic setting

2.6       Late Eocene plate tectonic setting

2.7       Mid Oligocene plate tectonic setting

2.8       Present day plate tectonic setting

            Paleoceanography

2.9       Late Cretaceous paleoceanography

2.10     Early Paleocene paleoceanography

2.11     Late Paleocene paleoceanography

2.12     Early Eocene paleoceanography

2.13     Late Eocene paleoceanography

2.14     Mid Oligocene paleoceanography

2.15     Present day paleoceanography

2.16     Late Paleocene migration routes and land bridges

2.17     Early Oligocene connection to the Arctic

            Tectonism and magmatism

2.18     Calibration of volcanic events with North Atlantic stratigraphy

2.19     North Atlantic thermal and magmatic event stratigraphy

            Paleoclimate

2.20     Phanerozoic paleogeography, paleotemperature and glaciations

2.21     Late Ordovician paleogeography

2.22     Late Carboniferous paleogeography

2.23     Late Jurassic paleogeography

2.24     Present day paleogeography

2.25     Cenozoic global circulation and paleotemperature

2.26     Development of the circum-Antarctic current

2.27     Eocene-Oligocene oceanographic changes

2.28     Eocene-Oligocene vegetation and paleotemperature

2.29     Cenozoic isotope record and glaciations

2.30     Modern polar circulation

2.31     Lower Tertiary isotope record and North Atlantic climatic events

            Biotic development of the North Sea and North Atlantic systems

2.32     Major microfossil groups

2.33     Paleocene warming and migration events

2.34     Eocene cooling and extinction events, northeast Atlantic and North Sea

2.35     Eocene cooling and extinction events, northwest Atlantic and Labrador-Greenland Sea

2.36     Biotic development of the northeast Atlantic and North Sea

2.37     Biotic development of the Labrador Sea-Davis Strait High-Baffin Bay region

2.38     Synthesis of North Atlantic events

  1. Offshore Eastern Canada and West Greenland stratigraphic framework

3.1       Offshore Labrador-Baffin Bay-West Greenland Paleocene-Eocene stratigraphy

3.2       Scotian Shelf and Grand Banks Paleocene-Eocene stratigraphy

            Biostratigraphy

3.3        Offshore Labrador-Baffin Bay-West Greenland Paleocene-Eocene biostratigraphy

3.4         Scotian Shelf and Grand Banks Paleocene-Eocene biostratigraphy

3.5         West Greenland well correlation

          Paleocene-Eocene stratigraphy

3.7       Saglek Basin well correlation

3.8       North Hopedale Basin well correlation

3.8       South Hopedale Basin well correlation

3.9       Offshore Labrador-Davis Strait High well correlation

3.10     Offshore northern Labrador well correlation

3.11     Offshore southern Labrador well correlation

3.12     Grand Banks (Linnet to Terra Nova) well correlation

3.13     Western Grand Banks well correlation

3.14     Eastern Grand Banks well correlation

3.15     Scotian Shelf well correlation

3.16     Scotian Shelf (Bonnet to South Griffin) well correlation

3.17     Association of sandstones with Paleocene uplift surfaces

3.18     Eocene stratigraphic surfaces

3.19     Paleocene-Eocene biostratigraphic intervals

3.20     Stratigraphic sequences and surfaces

3.21     Geology of the Disko-Nuussuaq-Svartenhuk Halvø area

3.22     Nuussuaq south coast well stratigraphy

3.23     Nuussuaq incised valley stratigraphy

  1. Offshore Eastern Canada and West Greenland regional geology

            Baffin Bay and West Greenland

4.1       Baffin Bay and West Greenland tectonic elements

4.2       Baffin Bay and West Greenland basement geology

4.3       Geoseismic profiles across Melville Bay and West

Greenland shelf

4.4       Davis Strait High depth to magnetic basement

4.5       Davis Strait High gravity anomalies

Offshore Labrador

4.6       Offshore Labrador tectonic elements

4.7       Labrador and southwest Greenland basement geology

4.8       Geoseismic profiles across Labrador shelf-Labrador Sea-West Greenland shelf

4.9       Geoseismic profiles in the Saglek and Hopedale basins

4.10     Depth to top Markland Formation

4.11     Markland Formation isopach

4.12     Depth to top Cartwright Formation

4.13     Cartwright Formation isopach

4.14     Depth to top Kenamu Formation

4.15     Kenamu Formation isopach

            Scotian Shelf and Grand Banks

4.16     Scotian Shelf and Grand Banks tectonic elements

4.17     Scotian Shelf and Grand Banks depth to continental basement

4.18     Scotian Shelf and Grand Banks basement geology

4.19     Scotian Shelf and Grand Banks Mesozoic basins

4.20     Geoseismic profiles across the Grand Banks and northeast Newfoundland shelf

4.21     Geoseismic profiles across the Scotian Shelf

4.22     Scotian Shelf and Grand Banks Tertiary isopach

  1. Hydrocarbon plays

5.1       Offshore Eastern Canada and West Greenland hydrocarbon plays

5.2       Baffin Bay and West Greenland Lower Paleocene paleogeography

5.3       Baffin Bay and West Greenland Upper Paleocene paleogeography

5.4       Offshore Labrador Lower Paleocene paleogeography

5.5       Offshore Labrador Upper Paleocene paleogeography

5.6       Offshore Labrador Middle Eocene paleogeography

5.7       Labrador Shelf Lower Tertiary hydrocarbon plays

5.8       Grand Banks Lower Tertiary hyrdocarbon plays

5.9       Scotian Shelf Lower Tertiary hydrocarbon plays

APPENDICES

APPENDIX A: CHRONOSTRATIGRAPHY

A.1      Northwest Atlantic Basins

A.2      Northeast Atlantic basins

A.3      Chronostratigraphic control

APPENDIX B.GEOCHEMISTRY

B.1       West Greenland hydrocarbons

B.2       Offshore West Greenland wells

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