|Animal-sediment relationships on a subarctic intertidal flat, Pangnirtung Fiord, Baffin Island, Canada|
Aitken, A.E.; Risk, M.J.; Howard, J.D. (1988). Animal-sediment relationships on a subarctic intertidal flat, Pangnirtung Fiord, Baffin Island, Canada. J. Sediment. Petrol. 58(6): 969-978
In: Journal of Sedimentary Petrology. Society of Economic Paleontologists and Mineralogists (SEPM): Tulsa. ISSN 0022-4472, more
Arctic zone; Biogenic sedimentary structures; Fjords; Intertidal environment; Marine
|Authors|| || Top |
- Aitken, A.E.
- Risk, M.J.
- Howard, J.D.
Broad, boulder-strewn intertidal flats border the shores of Pangnirtung Fiord, Baffin Island. These intertidal flats support a benthic biota dominated by bivalves, sedentary polychaetes and phaeophycean algae. The assemblage of organisms inhibits a variety of substrates ranging from muddy sand through gravelly sand and boulders. Six depositional environments defined on the basis of sediment texture, primary sedimentary structures and their associated macrofauna and ichnofauna are recognized on Pangnirtung Fiord intertidal flats. Proceeding seaward, these are beaches, sand bars, muddy sand flats, Macoma balthica sand flats, Arenicola marina sand flats, and boulder barricades. Such sediments, in outcrop, may differ only subtly from their equivalents in other latitudes. Modern biogenic structures provide essential information for environmental reconstruction in Arctic marginal marine environments.