SSP
Stratigraphy, Sedimentology and Palaeontology

Glacial grooves from the Laurentide Ice Sheet (Québec, Canada)

These impressive glacial grooves observed along the North Shore of the St. Lawrence Estuary (Québec, Canada) were carved into the crystalline bedrock by the Laurentide Ice Sheet.
The grooves mark the basement of a complex sedimentary system known as the Tadoussac Delta, lying at the mouth of the Saguenay Fjord and intimately tied to the Late Pleistocene-Early Holocene deglaciation of the area.
The exact glacial dynamics that created these straight regular marks has still to be constrained. For more information on the formative processes and the general context, keep an eye on a forthcoming paper by Lajeunesse et al…
These grooves were visited this summer during a fantastic field trip of the ISC2018: “Landforms, sedimentary facies and stratigraphic architecture of a deglacial, forced-regressive context: the Québec North Shore” by Pierre Dietrich, Patrick Lajeunesse and Jean-François Ghienne. http://www.isc2018.org/field-trips#POST
Guilhem Amin Douillet works as a physical sedimentologist at the University of Bern (Switzerland). He is interested in currents and how they shape bedforms. He is currently studying bedforms created by pyroclastic density currents and tempestites from the swiss molasse basin. These main themes bring him to compare his field samples with other types of environments from turbidity currents, supercritical flows, wind driven transport and highly loaded rivers. He has been involved as a SSP sedimentology science officer since 2012, and was the SSP ECS representative from 2013 to 2016.

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