Chronology of detrital carbonate events in Baffin Bay reveals different timing but similar average recurrence time of North American-Arctic and Laurentide ice sheet collapse events during MIS 3

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Chronology of detrital carbonate events in Baffin Bay reveals different timing but similar average recurrence time of North American-Arctic and Laurentide ice sheet collapse events during MIS 3. / Jackson, Rebecca; Frederichs, Thomas; Schulz, Hartmut; Kucera, Michal.

In: Earth and Planetary Science Letters, Vol. 613, 118191, 2023.

Research output: Contribution to journal › Journal article › Research › peer-review

Harvard

Jackson, R, Frederichs, T, Schulz, H & Kucera, M 2023, 'Chronology of detrital carbonate events in Baffin Bay reveals different timing but similar average recurrence time of North American-Arctic and Laurentide ice sheet collapse events during MIS 3', Earth and Planetary Science Letters, vol. 613, 118191. https://doi.org/10.1016/j.epsl.2023.118191

APA

Jackson, R., Frederichs, T., Schulz, H., & Kucera, M. (2023). Chronology of detrital carbonate events in Baffin Bay reveals different timing but similar average recurrence time of North American-Arctic and Laurentide ice sheet collapse events during MIS 3. Earth and Planetary Science Letters, 613, [118191]. https://doi.org/10.1016/j.epsl.2023.118191

Vancouver

Jackson R, Frederichs T, Schulz H, Kucera M. Chronology of detrital carbonate events in Baffin Bay reveals different timing but similar average recurrence time of North American-Arctic and Laurentide ice sheet collapse events during MIS 3. Earth and Planetary Science Letters. 2023;613. 118191. https://doi.org/10.1016/j.epsl.2023.118191

Author

Jackson, Rebecca ; Frederichs, Thomas ; Schulz, Hartmut ; Kucera, Michal. / Chronology of detrital carbonate events in Baffin Bay reveals different timing but similar average recurrence time of North American-Arctic and Laurentide ice sheet collapse events during MIS 3. In: Earth and Planetary Science Letters. 2023 ; Vol. 613.

Bibtex

@article{875b5a20faaa4541af6223d87c5d3af5,
title = "Chronology of detrital carbonate events in Baffin Bay reveals different timing but similar average recurrence time of North American-Arctic and Laurentide ice sheet collapse events during MIS 3",
abstract = "Baffin Bay Detrital Carbonate (BBDC) layers represent periods of elevated discharge of terrigenoussediments, icebergs and freshwater originating from the North American Arctic-ice sheet complex.Distinct from Heinrich event layers in their dolomitic composition, these sedimentary deposits arefound throughout Baffin Bay. They are considered a signature of large-scale instability of the ice sheetsdischarging into the Baffin Bay, akin to the Heinrich events of the North Atlantic. However, the precisetiming of and potential forcing mechanisms for the North American Arctic-ice sheet instabilities remainselusive. Previous work suggests that BBDC events were not in phase with Heinrich events originating fromthe Hudson Strait, but this hypothesis could not be tested without rigorous chronological constraints.By combining radiocarbon ages and relative paleointensity (RPI) dating in a central western Baffin Baymarine sedimentary sequence, we were able to derive a new chronology for BBDC events covering a largepart of MIS3. Sedimentological and elemental data indicate the occurrence of seven distinct BBDC eventsover the last 52 ka. These events occur during both glacials (stadials) and interglacials (interstadials)and have no consistent phase relationship with Heinrich events. However, the mean duration and meanrecurrence time of BBDC events appears similar to Heinrich events. We conclude that BBDC events reflectrepeated ice sheet instability periods, with similar statistical properties but different timing compared tothe Heinrich events. This implies that episodic instability was an intrinsic property of the North AmericanArctic-ice sheet complex as well, but over the studied period of MIS3, instabilities of the Arctic and theLaurentide Ice sheets did not appear to have been linked.",
author = "Rebecca Jackson and Thomas Frederichs and Hartmut Schulz and Michal Kucera",
year = "2023",
doi = "10.1016/j.epsl.2023.118191",
language = "English",
volume = "613",
journal = "Earth and Planetary Science Letters",
issn = "0012-821X",
publisher = "Elsevier",

}

RIS

TY - JOUR

T1 - Chronology of detrital carbonate events in Baffin Bay reveals different timing but similar average recurrence time of North American-Arctic and Laurentide ice sheet collapse events during MIS 3

AU - Jackson, Rebecca

AU - Frederichs, Thomas

AU - Schulz, Hartmut

AU - Kucera, Michal

PY - 2023

Y1 - 2023

N2 - Baffin Bay Detrital Carbonate (BBDC) layers represent periods of elevated discharge of terrigenoussediments, icebergs and freshwater originating from the North American Arctic-ice sheet complex.Distinct from Heinrich event layers in their dolomitic composition, these sedimentary deposits arefound throughout Baffin Bay. They are considered a signature of large-scale instability of the ice sheetsdischarging into the Baffin Bay, akin to the Heinrich events of the North Atlantic. However, the precisetiming of and potential forcing mechanisms for the North American Arctic-ice sheet instabilities remainselusive. Previous work suggests that BBDC events were not in phase with Heinrich events originating fromthe Hudson Strait, but this hypothesis could not be tested without rigorous chronological constraints.By combining radiocarbon ages and relative paleointensity (RPI) dating in a central western Baffin Baymarine sedimentary sequence, we were able to derive a new chronology for BBDC events covering a largepart of MIS3. Sedimentological and elemental data indicate the occurrence of seven distinct BBDC eventsover the last 52 ka. These events occur during both glacials (stadials) and interglacials (interstadials)and have no consistent phase relationship with Heinrich events. However, the mean duration and meanrecurrence time of BBDC events appears similar to Heinrich events. We conclude that BBDC events reflectrepeated ice sheet instability periods, with similar statistical properties but different timing compared tothe Heinrich events. This implies that episodic instability was an intrinsic property of the North AmericanArctic-ice sheet complex as well, but over the studied period of MIS3, instabilities of the Arctic and theLaurentide Ice sheets did not appear to have been linked.

AB - Baffin Bay Detrital Carbonate (BBDC) layers represent periods of elevated discharge of terrigenoussediments, icebergs and freshwater originating from the North American Arctic-ice sheet complex.Distinct from Heinrich event layers in their dolomitic composition, these sedimentary deposits arefound throughout Baffin Bay. They are considered a signature of large-scale instability of the ice sheetsdischarging into the Baffin Bay, akin to the Heinrich events of the North Atlantic. However, the precisetiming of and potential forcing mechanisms for the North American Arctic-ice sheet instabilities remainselusive. Previous work suggests that BBDC events were not in phase with Heinrich events originating fromthe Hudson Strait, but this hypothesis could not be tested without rigorous chronological constraints.By combining radiocarbon ages and relative paleointensity (RPI) dating in a central western Baffin Baymarine sedimentary sequence, we were able to derive a new chronology for BBDC events covering a largepart of MIS3. Sedimentological and elemental data indicate the occurrence of seven distinct BBDC eventsover the last 52 ka. These events occur during both glacials (stadials) and interglacials (interstadials)and have no consistent phase relationship with Heinrich events. However, the mean duration and meanrecurrence time of BBDC events appears similar to Heinrich events. We conclude that BBDC events reflectrepeated ice sheet instability periods, with similar statistical properties but different timing compared tothe Heinrich events. This implies that episodic instability was an intrinsic property of the North AmericanArctic-ice sheet complex as well, but over the studied period of MIS3, instabilities of the Arctic and theLaurentide Ice sheets did not appear to have been linked.

U2 - 10.1016/j.epsl.2023.118191

DO - 10.1016/j.epsl.2023.118191

M3 - Journal article

VL - 613

JO - Earth and Planetary Science Letters

JF - Earth and Planetary Science Letters

SN - 0012-821X

M1 - 118191

ER -

ID: 355247286