14 research outputs found
(Table 2) Results of U-Pb SHRIMP isotopic study of zircons from amphibolites of the Kamchatksky Cape Peninsula
Chemical and isotopic compositions of zircons from amphibolites of the Kamchatksky Cape Peninsula
The paper reports the first data on geochemistry and U-Pb SHRIMP geochronology of zircons from garnet amphibolites whose fragments are hosted by the sole of the ophiolite complex of the Kamchatsky Cape, eastern Kamchatka. The zircons compose homogeneous sampling, have relatively small sizes, are anhedral, have no oscillatory zoning, and possess practically no inclusions. Chemical and photoluminescent characteristics of the zircons testify to their metamorphic genesis. U-Pb SHRIMP dates of the zircons (81.4+/-9.6 Ma) indicate that metamorphism of the amphibolite complex took place in Campanian, Late Cretaceous. These dates seem to correspond to the peak of high-pressure metamorphism, which is thought to be related to origin of an ophiolite complex of the suprasubduction type and its uplift within the Kronotsky Island arc
(Table 1) Chemical composition of zircons from amphibolites of the Kamchatksky Cape Peninsula
Palladosilicide, Pd2Si, a new mineral from the Kapalagulu Intrusion, Western Tanzania and the Bushveld Complex, South Africa
© 2015 The Mineralogical Society. This document is the author's submitted/pre-refereeing version of the journal article. You are advised to consult the publisher's version if you wish to cite from it