Neutron-rich Sr nuclei around N=60 exhibit a sudden shape transition from spherical ground state to strongly prolate-deformed. Recently, much new insight into the structure of isotopes in this region has been gained through experimental studies excited levels, strengths, and spectroscopic factors. In work, “classic” shell model description strontium N=50 N=58 is provided, using natural valence ...

Isotopic anomalies have been found for Ba and Nd in two inclusions from the Allende meteorite. These inclusions are typical Ca-Al-rich objects associated with early condensates from the solar nebula but have distinctive O and Mg isotopic anomalies of the FUN type. Sample Cl shows a depletion only in Ba of 2 parts in 10 and normal Nd. Sample EK1-4-1 shows large positive excesses in the unshielde...

The Qin-Hang Metallogenic Belt (QHMB), an important metallogenic belt in South China, hosts Cu and W–Sn polymetallic deposits. Tongshanling ore field the QHMB is characterized by coexistence of Cu- W-bearing deposits, which are related to granodiorite granite porphyry. This study examined whole-rock geochemistry, geochronology, Sr–Nd–Hf isotopes determine genetic relationship between diverse or...

Abstract Geochemical and isotopic data are presented for ~ 32 Ma-old high-K andesites dacites from the Alpine Chain. The samples consist of plagioclase, amphibole, titanomagnetite rare biotite quartz. isotope indicate that slab-derived fluids, sediment melts presumably AFC processes involving continental crust played a key role in petrogenesis rocks. A contribution fluids is suggested based on ...

[1] The radiogenic isotopic ratios of Sr, Nd, Hf, and Pb in basaltic lavas associated with major hot spots, such as Hawaii, document the geochemical heterogeneity of their mantle source. What processes created such heterogeneity? For Hawaiian lavas there has been extensive discussion of geochemically enriched source components, but relatively little attention has been given to the origin of dep...

Strontium isotope chemistry, presented here, combined with previously obtained groundwater ion chemistry elucidates the stratigraphy of buried sedimentary rocks of the southern Yucatan Peninsula, Mexico. Whereas in groundwater of the northern Peninsula, ion chemistry is dominated by contact with a saline intrusion, the groundwater of southern Campeche and southern Quintana Roo has high SO4/Cl a...