Meteoric Be-10 from Sirius Group suggests high elevation McMurdo Dry Valleys permanently frozen since 6 Ma

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

Standard

Meteoric Be-10 from Sirius Group suggests high elevation McMurdo Dry Valleys permanently frozen since 6 Ma. / Dickinson, Warren W.; Schiller, Martin; Ditchburn, Bob G.; Graham, Ian J.; Zondervan, Albert.

In: Earth and Planetary Science Letters, Vol. 355-356, 01.01.2012, p. 13-19.

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

Harvard

Dickinson, WW, Schiller, M, Ditchburn, BG, Graham, IJ & Zondervan, A 2012, 'Meteoric Be-10 from Sirius Group suggests high elevation McMurdo Dry Valleys permanently frozen since 6 Ma', Earth and Planetary Science Letters, vol. 355-356, pp. 13-19. https://doi.org/10.1016/j.epsl.2012.09.003

APA

Dickinson, W. W., Schiller, M., Ditchburn, B. G., Graham, I. J., & Zondervan, A. (2012). Meteoric Be-10 from Sirius Group suggests high elevation McMurdo Dry Valleys permanently frozen since 6 Ma. Earth and Planetary Science Letters, 355-356, 13-19. https://doi.org/10.1016/j.epsl.2012.09.003

Vancouver

Dickinson WW, Schiller M, Ditchburn BG, Graham IJ, Zondervan A. Meteoric Be-10 from Sirius Group suggests high elevation McMurdo Dry Valleys permanently frozen since 6 Ma. Earth and Planetary Science Letters. 2012 Jan 1;355-356:13-19. https://doi.org/10.1016/j.epsl.2012.09.003

Author

Dickinson, Warren W. ; Schiller, Martin ; Ditchburn, Bob G. ; Graham, Ian J. ; Zondervan, Albert. / Meteoric Be-10 from Sirius Group suggests high elevation McMurdo Dry Valleys permanently frozen since 6 Ma. In: Earth and Planetary Science Letters. 2012 ; Vol. 355-356. pp. 13-19.

Bibtex

@article{4c233f97131d47d2856f3178fcad435d,
title = "Meteoric Be-10 from Sirius Group suggests high elevation McMurdo Dry Valleys permanently frozen since 6 Ma",
abstract = "A long-standing debate concerning Neogene Antarctic climate in the McMurdo Dry Valleys relies largely on evidence from landscape evolution, glacial modeling and stratigraphy. We provide new evidence from meteoric Be for the onset of frozen, hyper-arid conditions on a high elevation (1840m) interfluve at Table Mountain. A simple decay model for the co-occurrence of meteoric Be and illuviated clay in cores of ice-cemented glacial sediments indicates that the clays were actively migrating down from the surface in a warm climate until the system froze between 6 and 9Ma. Although this age range may be sensitive to possible interference by in situ produced Be, the implied minimum age of 6Ma for the Sirius Group indicates that the Dry Valleys were permanently frozen down to this elevation at this time. The model also suggests denudation rates of 1-6cmMyr since freezing. These data provide an independent test of glacial-stratigraphic evidence used to determine Antarctic paleoclimate.",
author = "Dickinson, {Warren W.} and Martin Schiller and Ditchburn, {Bob G.} and Graham, {Ian J.} and Albert Zondervan",
year = "2012",
month = jan,
day = "1",
doi = "10.1016/j.epsl.2012.09.003",
language = "English",
volume = "355-356",
pages = "13--19",
journal = "Earth and Planetary Science Letters",
issn = "0012-821X",
publisher = "Elsevier",

}

RIS

TY - JOUR

T1 - Meteoric Be-10 from Sirius Group suggests high elevation McMurdo Dry Valleys permanently frozen since 6 Ma

AU - Dickinson, Warren W.

AU - Schiller, Martin

AU - Ditchburn, Bob G.

AU - Graham, Ian J.

AU - Zondervan, Albert

PY - 2012/1/1

Y1 - 2012/1/1

N2 - A long-standing debate concerning Neogene Antarctic climate in the McMurdo Dry Valleys relies largely on evidence from landscape evolution, glacial modeling and stratigraphy. We provide new evidence from meteoric Be for the onset of frozen, hyper-arid conditions on a high elevation (1840m) interfluve at Table Mountain. A simple decay model for the co-occurrence of meteoric Be and illuviated clay in cores of ice-cemented glacial sediments indicates that the clays were actively migrating down from the surface in a warm climate until the system froze between 6 and 9Ma. Although this age range may be sensitive to possible interference by in situ produced Be, the implied minimum age of 6Ma for the Sirius Group indicates that the Dry Valleys were permanently frozen down to this elevation at this time. The model also suggests denudation rates of 1-6cmMyr since freezing. These data provide an independent test of glacial-stratigraphic evidence used to determine Antarctic paleoclimate.

AB - A long-standing debate concerning Neogene Antarctic climate in the McMurdo Dry Valleys relies largely on evidence from landscape evolution, glacial modeling and stratigraphy. We provide new evidence from meteoric Be for the onset of frozen, hyper-arid conditions on a high elevation (1840m) interfluve at Table Mountain. A simple decay model for the co-occurrence of meteoric Be and illuviated clay in cores of ice-cemented glacial sediments indicates that the clays were actively migrating down from the surface in a warm climate until the system froze between 6 and 9Ma. Although this age range may be sensitive to possible interference by in situ produced Be, the implied minimum age of 6Ma for the Sirius Group indicates that the Dry Valleys were permanently frozen down to this elevation at this time. The model also suggests denudation rates of 1-6cmMyr since freezing. These data provide an independent test of glacial-stratigraphic evidence used to determine Antarctic paleoclimate.

UR - http://www.scopus.com/inward/record.url?scp=84867127335&partnerID=8YFLogxK

U2 - 10.1016/j.epsl.2012.09.003

DO - 10.1016/j.epsl.2012.09.003

M3 - Journal article

AN - SCOPUS:84867127335

VL - 355-356

SP - 13

EP - 19

JO - Earth and Planetary Science Letters

JF - Earth and Planetary Science Letters

SN - 0012-821X

ER -

ID: 48868664