STABLE SULFUR ISOTOPE HYDROGEOCHEMICAL STUDIES USING DESERT SHRUBS AND TREE-RINGS, DEATH-VALLEY, CALIFORNIA, USA

Authors
YANG WB SPENCER RJ KROUSE HR
Citation
Wb. Yang et al., STABLE SULFUR ISOTOPE HYDROGEOCHEMICAL STUDIES USING DESERT SHRUBS AND TREE-RINGS, DEATH-VALLEY, CALIFORNIA, USA, Geochimica et cosmochimica acta, 60(16), 1996, pp. 3015-3022
Citations number
32
Categorie Soggetti
Geochemitry & Geophysics
Journal title
Geochimica et cosmochimica acta → ACNP
ISSN journal
00167037
Volume
60
Issue
16
Year of publication
1996
Pages
3015 - 3022
Database
ISI
SICI code
0016-7037(1996)60:16<3015:SSIHSU>2.0.ZU;2-6
Abstract
The delta(34)S values of two dominant xerophytes, Atriplex hymenehytra and Larrea tridentata, in Death Valley, California, vary similarly fr om +7 to +18 parts per thousand, corresponding isotopically to sulfate in the water supplies at a given location. Going radially outwards, t ree ring data from a phreatophyte tree, Tamarix aphylla, show a distin ct time dependence, with delta(34)S values increasing from +13.5 to +1 8 parts per thousand for soluble sulfate and from +12 to +17 parts per thousand for total sulfur. These data are interpreted in terms of sul fur sources, water sources and flow paths, and tree root growth.