Source lithology and crustal assimilation recorded in low δ18O olivine from Okinawa Trough, back-arc basin
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Thematic Article Noble gases in pillow basalt glasses from the northern Mariana Trough back-arc basin
Noble gas concentrations and isotopic compositions have been measured in eight samples of pillow basalt glasses collected from seven different localities along 250 km of the Mariana Trough spreading and rifting axis. The samples have uniform and mid-ocean ridge basalt (MORB)-like He/He values of 9±12 ́ 10 (6.4±8.6 times atmospheric) despite large variations in He. Concentrations of the noble ga...
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Two dives of the DSV Shinkai 6500 in the Mariana Trough back-arc basin in the western Pacific sampled back-arc basin mantle exposures. Reports of peridotite exposures in back-arc basin setting are very limited and the lack of samples has hindered our understanding of this important aspect of lithospheric evolution. The Mariana Trough is a slow-spreading ridge, and ultramafic exposures with asso...
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In this article, the low back vowel /A/ in word-final positions in Eghlidian dialect, one of Persian dialects, is studied. This vowel is represented phonetically as [A], [o] and [@] in different phonetic environments. Therefore many words were collected via interviewing ten native speakers so that these different alternant forms can be accounted for appropriately. Since one of the authors of th...
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متن کاملassimilation of final low back vowel in eghlidian dialect
in this article, the low back vowel /a/ in word-final positions in eghlidian dialect, one of persian dialects, is studied. this vowel is represented phonetically as [a], [o] and [@] in different phonetic environments. therefore many words were collected via interviewing ten native speakers so that these different alternant forms can be accounted for appropriately. since one of the authors of th...
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ژورنال
عنوان ژورنال: Lithos
سال: 2020
ISSN: 0024-4937
DOI: 10.1016/j.lithos.2020.105444