Skip to Main Content
Book Chapter

The importance of an integrated approach to provenance studies: A case study from the Paleocene of the Faroe-Shetland Basin, NE Atlantic

By
Andrew Morton
Andrew Morton
HM Research Associates, 2 Clive Road, Balsall Common, West Midlands CV7 7DW, UK, and CASP, University of Cambridge, 181a Huntingdon Road, Cambridge CB3 0DH, UK
Search for other works by this author on:
David Ellis
David Ellis
Statoil (UK) Ltd, 1 Kingdom Street, London W2 6BD, UK
Search for other works by this author on:
Mark Fanning
Mark Fanning
Research School of Earth Sciences, Australian National University, Canberra ACT 0200, Australia
Search for other works by this author on:
David Jolley
David Jolley
Department of Geology and Petroleum Geology, University of Aberdeen, Kings College, Aberdeen AB24 3UE, UK
Search for other works by this author on:
Andrew Whitham
Andrew Whitham
CASP, University of Cambridge, 181a Huntingdon Road, Cambridge CB3 0DH, UK
Search for other works by this author on:
Published:
May 01, 2012

Four different sand types (termed FSP1, FSP2, FSP3, and FSP4) have been recognized in the Paleocene succession of the Faroe-Shetland Basin, NE Atlantic, on the basis of conventional heavy mineral analysis, major element geochemistry of garnet, trace element geochemistry of rutile, U-Pb dating of detrital zircon, and palynofloral analysis. Sand types FSP1, FSP2, and FSP4 were all sourced from the eastern margin of the basin, whereas FSP3 was supplied from the west. No single technique discriminates all four sand types. Conventional heavy mineral analysis discriminates FSP3 from the other three sand types but does not discriminate FSP1, FSP2, and FSP4. Garnet geochemistry distinguishes FSP1, FSP2 and FSP4, but FSP3 garnet populations overlap those of FSP1 and FSP2. Rutile geochemistry distinguishes FSP2 from FSP1 and FSP4 but cannot be easily applied to FSP3 owing to the scarcity of rutile in this sand type. Zircon age spectra in FSP1, FSP2, and FSP4 are similar to one another, but FSP4 can be recognized on the basis of a higher proportion of Archean zircons. Some of the individual techniques have certain limitations: e.g., one of the key conventional heavy mineral parameters is the presence of clinopyroxene, but this is not always reliable owing to the instability of this mineral during burial diagenesis. Likewise, garnet geochemistry cannot be applied to the most deeply buried sandstones in the Faroe-Shetland Basin owing to complete garnet dissolution. Furthermore, care is required when interpreting garnet data from sandstones that have undergone partial garnet dissolution, as there may have been modification of the range of garnet compositions as a result of the greater instability of Ca-rich garnets compared with Ca-poor types. Finally, the “Greenland flora,” which occurs in association with sand type FSP3, has been found in some wells that lack FSP3 sandstones. This discrepancy is attributed to the difference in hydrodynamic behavior of palynomorphs compared with sand particles. This chapter illustrates the importance of adopting an integrated approach, as significant detail would have been lost if only one technique had been applied, and integration of a number of different techniques overcomes limitations associated with individual approaches. An integrated approach also builds a more comprehensive picture of source area characteristics.

You do not currently have access to this article.

Figures & Tables

Contents

GSA Special Papers

Mineralogical and Geochemical Approaches to Provenance

E. Troy Rasbury
E. Troy Rasbury
Department of Geosciences, Stony Brook University, Stony Brook, New York 11794-2100, USA
Search for other works by this author on:
Sidney R. Hemming
Sidney R. Hemming
Department of Earth and Environmental Sciences and Lamont-Doherty Earth Observatory, Columbia University, Palisades, New York 10964, USA
Search for other works by this author on:
Nancy R. Riggs
Nancy R. Riggs
Geology Program, School of Earth Sciences and Environmental Sustainability, Northern Arizona University, Flagstaff, Arizona 86011, USA
Search for other works by this author on:
Geological Society of America
Volume
487
ISBN print:
9780813724874
Publication date:
May 01, 2012

References

Related

Citing Books via

Related Articles
Close Modal
This Feature Is Available To Subscribers Only

Sign In or Create an Account

Close Modal
Close Modal