Tectonic controls on the timing of fjord incision at the Antarctic Peninsula
Tectonic controls on the timing of fjord incision at the Antarctic Peninsula
复制标题
构造对南极半岛峡湾切割时间的控制
DOI:
10.1016/j.epsl.2022.117528
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发表时间:
2022
影响因子:
5.3
通讯作者:
Clinger A
中科院分区:
文献类型:
--
作者:
Clinger A
We report 534 detrital apatite (U-Th)/He thermochronometric ages collected along a >400 km latitudinal transect along the Antarctic Peninsula (AP). We use the dataset to evaluate the relative roles of climate change and tectonics on the timing of km-scale fjord incision. We find that the onset of km-scale topographic change occurred more than 15 million years after the initiation of glaciation in the region, and generally coincided with the arrival times of the spreading ridge at different latitudes. These results indicate that tectonically-initiated rock uplift accelerated rates of erosion during long glacial conditions at the AP. We infer that rock uplift primarily affected glacial erosion rates by increasing topographic relief, and thereby increasing ice motion and its capacity to erode. These are among the first empirical observations to reveal that a tectonic history, and its control on the regional topography of a landscape, has influenced glacial erosion rates over geologic timescales.
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DOI:
10.1029/2019jf005447
发表时间:
2020-06
期刊:
Journal of Geophysical Research: Earth Surface
影响因子:
--
作者:
A. Clinger;M. Fox;G. Balco;K. Cuffey;D. Shuster
通讯作者:
A. Clinger;M. Fox;G. Balco;K. Cuffey;D. Shuster
DOI:
--
发表时间:
2013
期刊:
影响因子:
--
作者:
D. Elliot
通讯作者:
D. Elliot
影响因子:
2.9
作者:
Alley, R. B.;Cuffey, K. M.;Zoet, L. K.
通讯作者:
Zoet, L. K.
影响因子:
13.6
作者:
Willett, C. D.;Ma, K. F.;Brandon, M. T.;Hourigan, J. K.;Christeleit, E. C.;Shuster, D. L.
通讯作者:
Shuster, D. L.
影响因子:
2.7
作者:
P. Osmundsen;T. Redfield;B. Hendriks;S. Bergh;J. Hansen;I. Henderson;J. Dehls;T. R. Lauknes;Y. Larsen;E. Anda;B. Davidsen
通讯作者:
B. Davidsen