U-series isotopic signatures of soils and headwater streams in a semi-arid complex volcanic terrain
详细信息 查看全文
- 作者：David Hucklea ; Lin Mab ; lma@utep.edu" class="auth_mail" title="E-mail the corresponding author ; Jennifer McIntosha ; Angé ; lica Vá ; zquez-Ortegac ; Craig Rasmussend ; Jon Choroverd
- 关键词：Soil formation ; Stream chemistry ; Volcanic ash ; Chemical weathering ; U-series isotopes ; Critical zone
- 刊名：Chemical Geology
- 出版年：2016
- 出版时间：16 December 2016
- 年：2016
- 卷：445
- 期：Complete
- 页码：68-83
- 全文大小：2834 K
文摘
- •
Episodic mixing of volcanic ash and dust affects U-series isotopes in semi-arid soils.
- •
(234U/238U) used as a tracer of water sources and residence time in stream waters.
- •
Lower (234U/238U) values in spring and stream waters during snowmelt vs. dry seasons
- •
Decrease of (234U/238U) values from high to low elevation along La Jara stream
- •
Increasing water-rock interaction leading to decreasing (234U/238U) in groundwater.