Aeolian Dust Provenance in Central East Antarctica During the Holocene: Environmental Constraints From Single‐Grain Raman Spectroscopy
Aeolian Dust Provenance in Central East Antarctica During the Holocene: Environmental Constraints From Single‐Grain Raman Spectroscopy
复制标题
全新世南极洲中部的风尘来源:单晶拉曼光谱的环境限制
DOI:
10.1029/2019gl083402
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发表时间:
2019
影响因子:
5.2
通讯作者:
V. Maggi
中科院分区:
文献类型:
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作者:
Chiara I. Paleari;B. Delmonte;S. Andó;E. Garzanti;J. Petit;V. Maggi
We analyzed the single‐grain mineralogical composition of aeolian dust transported to central East Antarctica for provenance purposes. Comparison with data from the last glacial period shows for the first time disappearance of carbonates during the Holocene related to sea level rise and suppressed deflation from the Argentinean continental shelf, exposed during Marine Isotope Stage 2. Zeolites, related to alteration of volcanic glass in the subglacial/periglacial environment of Patagonia, show a similar behavior. The remaining minerals, remarkably similar between the two climatic periods, are compatible with a Pampean and Patagonian provenance, but Holocene data show a more pronounced volcanic and metamorphic imprint and presence of minerals related to warm climate weathering environments compatible with an additional contribution from subtropical latitudes of South America. These results do not imply a major large‐scale reorganization of atmospheric circulation after the last climatic transition.
DOI:
--
发表时间:
2009
期刊:
影响因子:
--
作者:
Tomoki Yoshihisa;Shojiro Nishio;氷見山幸夫;岩井茂樹;東久美子
通讯作者:
東久美子
DOI:
--
发表时间:
2006
期刊:
Geophysical Research Letters 33
影响因子:
--
作者:
Ohno;H.
通讯作者:
H.