High-precision ultra-distal Holocene tephrochronology in North America
High-precision ultra-distal Holocene tephrochronology in North America
复制标题
北美高精度超远全新世年代学
DOI:
10.1016/j.quascirev.2012.07.024
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发表时间:
2012
影响因子:
4
通讯作者:
Pyne-O'Donnell S
中科院分区:
文献类型:
--
作者:
Pyne-O'Donnell S
Far-travelled volcanic ashes (tephras) from Holocene eruptions in Alaska and the Pacific northwest have been traced to the easternmost extent of North America, providing the basis for a new high-precision geochronological framework throughout the continent through tephrochronology (the dating and correlation of tephra isochrons in sedimentary records). The reported isochrons are geochemically distinct, with seven correlated to documented sources in Alaska and the Cascades, including the Mazama ash from Oregon (∼7600 years old) and the eastern lobe of the White River Ash from Alaska (∼1150 years old). These findings mark the beginning of a tephrochronological framework of enhanced precision across North America, with applications in palaeoclimate, surface process and archaeological studies. The particle travel distances involved (up to ∼7000 km) also demonstrate the potential for continent-wide or trans-Atlantic socio-economic disruption from similar future eruptions.
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DOI:
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发表时间:
2012
期刊:
影响因子:
--
作者:
C. Witham;H. Webster;M. Hort;A. Jones;D. Thomson
通讯作者:
D. Thomson
影响因子:
2.9
作者:
J. Fierstein;W. Hildreth;J. W. Hendley;P. H. Stauffer
通讯作者:
P. H. Stauffer
影响因子:
1.4
作者:
F. Foit;D. Gavin;F. Hu
通讯作者:
F. Hu
影响因子:
5.8
作者:
G. Swindles;I. Lawson;I. Savov;C. Connor;G. Plunkett
通讯作者:
G. Plunkett
影响因子:
2.2
作者:
Stephen Kuehn;F. Foit
通讯作者:
F. Foit