Canada's Labrador Shelf preserves climate records once thought erased by ice
The Labrador Shelf is a shallow marine area on the margin of the Labrador Sea in the North Atlantic off the east coast of Canada. During the last ice age, this region was covered by the Laurentide Ice Sheet, one of the largest ice masses in Earth's history, which once covered vast parts of North America.
The Labrador Shelf, a shallow marine region off the coast of Canada, has long been assumed to have lost its climate records due to the last ice age's Laurentide Ice Sheet. However, a new study by Kiel University has revealed that this sediment-rich area preserves sedimentary layers from both glacial and interglacial periods. By analyzing high-resolution seismic data, scientists identified eight distinct Quaternary sedimentary units, including glaciomarine and interglacial deposits, within what was previously thought to be scoured by the ice.
This discovery significantly expands the known record of climate and glacial history on the shelf, providing crucial insights into the interactions between ice sheets and ocean currents and their impact on global climate patterns.
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