Robert W. Dalrymple
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View article: The Mall Bay Formation (Ediacaran) and the protracted onset of the Gaskiers glaciation in Newfoundland, Canada
The Mall Bay Formation (Ediacaran) and the protracted onset of the Gaskiers glaciation in Newfoundland, Canada Open
The Gaskiers is the oldest Ediacaran glaciation and thus represents Earth's first icehouse since the end of the Snowball glaciations that characterized the Cryogenian world. Age bracketing of the 300-m-thick marine tillites of the Gaskiers…
View article: Classification of underwater flow-transverse sedimentary bedforms
Classification of underwater flow-transverse sedimentary bedforms Open
Despite the recommendations given in Ashley (1990), a plethora of terms continues to be used to describe flow-scale flow-transverse sedimentary bedforms, often without clear definition or distinction between the different nomenclatures. Fo…
View article: A new look at modern carbonate shoals and coastal barrier systems
A new look at modern carbonate shoals and coastal barrier systems Open
This review of published literature examines the nature of modern carbonate coastal barrier systems, concentrating on barrier islands and their related shoals and lagoons in light of concepts derived from their siliciclastic counterparts. …
View article: A review of the morphology, physical processes and deposits of modern straits
A review of the morphology, physical processes and deposits of modern straits Open
This study reviews the morphology, hydrodynamics and sedimentology of 33 modern straits, including examples from diverse tectonic and climatic settings. Strait morphology ranges from short, simple straits to long, tortuous passages many hu…
View article: Hutchison Medallist 1. Wave-Dominated to Tide-Dominated Coastal Systems: A Unifying Model for Tidal Shorefaces and Refinement of the Coastal- Environments Classification Scheme
Hutchison Medallist 1. Wave-Dominated to Tide-Dominated Coastal Systems: A Unifying Model for Tidal Shorefaces and Refinement of the Coastal- Environments Classification Scheme Open
Coastal depositional systems are normally classified based on the relative input of wave, tide, and river processes. While wave- through to river-dominated environments are well characterized, environments along the wave-to-tide continuum …
View article: Anatomy of a mixed bioclastic–siliciclastic regressive tidal sand ridge: Facies‐based case study from the lower Pleistocene Siderno Strait, southern Italy
Anatomy of a mixed bioclastic–siliciclastic regressive tidal sand ridge: Facies‐based case study from the lower Pleistocene Siderno Strait, southern Italy Open
Sand ridges, a common feature of modern open shelves, reflect persistent currents and sediment availability under recent transgressive conditions. They represent the largest bedforms in the oceans and, as such, can yield information on lon…
View article: Sedimentation on high‐energy sand flats in the Bay of Fundy: The record of tidal‐bore activity and deposition from high‐concentration suspensions of sand
Sedimentation on high‐energy sand flats in the Bay of Fundy: The record of tidal‐bore activity and deposition from high‐concentration suspensions of sand Open
The Cobequid Bay – Salmon River estuary, Bay of Fundy, does not possess particularly large tidal bores (maximum ca 30 cm). Nevertheless, detailed logging of 13 peels made from cores spread throughout the entire area influenced by tidal bor…
View article: Data for: Cryogenian Aspidella from northwestern Canada
Data for: Cryogenian Aspidella from northwestern Canada Open
Raw presence/absence data of Twitya Aspidella and numerous previously published Ediacaran Aspidella used in cluster analyses. Classical clustering analysis of presence/absence data and nearest neighbor analysis of presence/absence data. Th…
View article: Are carbonate barrier islands mobile? Insights from a mid to late‐Holocene system, Al Ruwais, northern Qatar
Are carbonate barrier islands mobile? Insights from a mid to late‐Holocene system, Al Ruwais, northern Qatar Open
Barrier islands are important landforms in many coastal systems around the globe. Studies of modern barrier island systems are mostly limited to those of siliciclastic realms, where the islands are recognized as mobile features that form o…
View article: Facies and stratigraphic architecture of the late Pleistocene to early Holocene tide-dominated paleo-Changjiang (Yangtze River) delta
Facies and stratigraphic architecture of the late Pleistocene to early Holocene tide-dominated paleo-Changjiang (Yangtze River) delta Open
This paper reexamines the late Pleistocene to early Holocene transgressive succession (ca. 19.0–8.0 cal. k.y. B.P.) beneath the modern Changjiang delta plain, one of the world's great rivers, by means of a detailed process-oriented investi…