title: Noble gas isotopic signatures in thermal waters of the Dead Sea Transform, Israel
creator: Tsur, Neta
subject: ddc-530
subject: 530 Physics
subject: ddc-540
subject: 540 Chemistry and allied sciences
subject: ddc-550
subject: 550 Earth sciences
description: Noble gas isotope composition (especially helium) in thermal waters from different areas along the Dead Sea Transform in Israel reveals local intrusions of volatile gases and heat flux from the mantle into the crust. The distinct 3He/4He ratios in the atmosphere, crust and mantle enable one to separate the total helium concentration into mantle, crustal and atmospheric components. Helium isotope ratios of all sampled waters exceed the typical crustal ratio, indicating contributions of mantle derived helium to the total helium concentration. A clear trend can be observed in 3He/4He ratios from different areas. Northern samples show higher 3He/4He ratios than southern ones. Noble gas temperatures (NGTs) were used to determine the atmospheric helium component. Most of the samples contain less than 3% atmospheric helium, whereas the mantle derived helium component ranges from 2% to 38%.   In addition to helium, the origin of CO2 in the water is examined. Measurements of 13C indicate no mantle derived CO2. Furthermore, stable isotopes data (18O and 2H) show no evidence of mantle derived water or water from reservoirs exceeding 100°C.
date: 2013
type: Master's thesis
type: info:eu-repo/semantics/masterThesis
type: NonPeerReviewed
format: application/pdf
identifier: https://archiv.ub.uni-heidelberg.de/volltextserverhttps://archiv.ub.uni-heidelberg.de/volltextserver/16927/1/Tsur_master.pdf
identifier: DOI:10.11588/heidok.00016927
identifier: urn:nbn:de:bsz:16-heidok-169274
identifier:   Tsur, Neta  (2013) Noble gas isotopic signatures in thermal waters of the Dead Sea Transform, Israel.  [Master's thesis]     
relation: https://archiv.ub.uni-heidelberg.de/volltextserver/16927/
rights: info:eu-repo/semantics/openAccess
rights: http://archiv.ub.uni-heidelberg.de/volltextserver/help/license_urhg.html
language: eng