TY - JOUR
T1 - Strontium in rainwater from Israel
T2 - Sources, isotopes and chemistry
AU - Herut, Barak
AU - Starinsky, Avraham
AU - Katz, Amitai
PY - 1993/11
Y1 - 1993/11
N2 - Eighteen rain samples from Israel have been analyzed for their chemical composition and 87Sr 86Sr ratios. The Sr-isotopic ratios lie in the range 0.7078 and 0.7092, and the Sr concentrations vary from 1 × 10-4 to 9 × 10-4 meq Sr/l. Soluble salts in rainwater are inherited from three major natural sources, seaspray, Recent marine minerals and mineral dust eroded from rock outcrops and soil. A mixing model is formulated to apply the chemical composition of rain (Cl- and Sr2+) and its isotopic 87Sr 86Sr ratio, for the identification and estimation of the Sr sources. All the samples fall within the mixing space predicted by the model for the three end members mentioned above. The data indicate that the most important non-seaspray source contributing dissolved salts to the rains in Israel comprises a mixture of Senonian to Eocene chalk (and its weathering products) and Recent marine minerals, from local and imported sources. Most of the samples (67%) contain 50% or more non-seaspray Sr (i.e., Sr dissolved from dust or Recent marine minerals), whereas 56% of the samples display 87Sr 86Sr ratios lower than 0.7090. The rest represent mixtures of seaspray and Recent marine minerals.
AB - Eighteen rain samples from Israel have been analyzed for their chemical composition and 87Sr 86Sr ratios. The Sr-isotopic ratios lie in the range 0.7078 and 0.7092, and the Sr concentrations vary from 1 × 10-4 to 9 × 10-4 meq Sr/l. Soluble salts in rainwater are inherited from three major natural sources, seaspray, Recent marine minerals and mineral dust eroded from rock outcrops and soil. A mixing model is formulated to apply the chemical composition of rain (Cl- and Sr2+) and its isotopic 87Sr 86Sr ratio, for the identification and estimation of the Sr sources. All the samples fall within the mixing space predicted by the model for the three end members mentioned above. The data indicate that the most important non-seaspray source contributing dissolved salts to the rains in Israel comprises a mixture of Senonian to Eocene chalk (and its weathering products) and Recent marine minerals, from local and imported sources. Most of the samples (67%) contain 50% or more non-seaspray Sr (i.e., Sr dissolved from dust or Recent marine minerals), whereas 56% of the samples display 87Sr 86Sr ratios lower than 0.7090. The rest represent mixtures of seaspray and Recent marine minerals.
UR - http://www.scopus.com/inward/record.url?scp=0027880427&partnerID=8YFLogxK
U2 - 10.1016/0012-821X(93)90024-4
DO - 10.1016/0012-821X(93)90024-4
M3 - ???researchoutput.researchoutputtypes.contributiontojournal.article???
AN - SCOPUS:0027880427
SN - 0012-821X
VL - 120
SP - 77
EP - 84
JO - Earth and Planetary Science Letters
JF - Earth and Planetary Science Letters
IS - 1-2
ER -