Radiocarbon Dating of Silica Sinter and Postglacial Hydrothermal Activity in the El Tatio Geyser Field
Radiocarbon Dating of Silica Sinter and Postglacial Hydrothermal Activity in the El Tatio Geyser Field
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El Tatio 间歇泉区二氧化硅烧结体和冰后热液活动的放射性碳测年
DOI:
10.1029/2020gl087908
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发表时间:
2020
影响因子:
5.2
通讯作者:
Morata, Diego
中科院分区:
文献类型:
--
作者:
Munoz‐Saez, Carolina;Manga, Michael;Hurwitz, Shaul;Slagter, Silvina;Churchill, Dakota M.;Reich, Martin;Damby, David;Morata, Diego
The El Tatio geothermal field in the Chilean Altiplano contains hydrothermal silica sinter deposits overlaying glacial and volcanic units, providing an opportunity to constrain the timing of deglaciation and volcanic activity in an area with sparse absolute chronologies. We obtained 51 new radiocarbon ages and13C values on the organic material trapped in these sinter deposits. Based on the δ13C values, we exclude 29 samples for possible contamination with bacterial mats that incorporate old carbon. We infer that hydrothermal activity initiated ~27 ka ago and has been nearly continuous ever since. The ages of the oldest sinter deposits coincide with ages of moraines that stabilized after the most recent deglaciation. Whereas late Pleistocene sinters are broadly distributed in the field, Holocene deposits are found around active hydrothermal features. Although recent volcanism is absent in the vicinity of El Tatio, persistent hydrothermal discharge implies a long‐lived magmatic heat source.
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DOI:
--
发表时间:
2014
期刊:
影响因子:
--
作者:
Bryan D. Drake;K. Campbell;J. Rowland;D. Guido;P. Browne;A. Rae
通讯作者:
A. Rae
影响因子:
4.4
作者:
L. Steinke;Gordon W. Slysz;M. Lipton;Christian G. Klatt;J. Moran;M. Romine;J. Wood;G. Anderson;D. Bryant;D. M. Ward
通讯作者:
D. M. Ward
影响因子:
2.9
作者:
Munoz-Saez, Carolina;Manga, Michael;Hurwitz, Shaul
通讯作者:
Hurwitz, Shaul
影响因子:
4.4
作者:
M. V. D. van der Meer;Stefan Schouten;J. S. Sinninghe Damsté;J. D. de Leeuw;D. M. Ward
通讯作者:
D. M. Ward
影响因子:
8.3
作者:
Hogg, Alan G.;Hua, Quan;Zimmerman, Susan R. H.
通讯作者:
Zimmerman, Susan R. H.