Mafic dykes: relationships among geometry, internal fractures and fissural tectonic patterns
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چکیده
منابع مشابه
evolutionary origin and phylogenetic relationships among fusarium oxysporum f. sp. melonis isolates in iran and their relationship with nonpathogenic isolates
پژمردگی فوزاریومی خربزه و طالبی با عامل fusarium oxysporum f. sp. melonis از بیماری های مهم قارچی در مناطق رشد این گیاهان می باشد. جدایه های f. oxysporum از گیاهان و خاک ریزوسفر متعلق به پنج استان مهم تولیدکننده ی خربزه و طالبی جداسازی شد و بر پایه ی بیماری زایی در ارقام افتراقی، گروه های سازگاری رویشی (vegetative compatibility groups)، توالی سنجی ناحیه ی جداکننده ی بین ژنی دی اِن اِی ریبوزومی (n...
15 صفحه اولgeochemistry and petrogenesis of tertiary mafic dykes from taleghan, north iran
in taleghan, olivine basalt-basaltic andesite dykes as part of tertiary mamgmatic activities in central and western alborz zone, intruded into both karaj formation and late eocene-oligocene volcanic rocks. these dykes have similar geochemical characteristic which suggest that they are originated from a common source. on the primitive mantle normalized spider diagram, the dykes are characterized...
متن کاملPetrology, geochemistry, and petrogenesis of mafic dykes from the Kermanshah Ophiolite in Sahneh-Harsin area of Western Iran
The Kermanshah ophiolite complex is a part of the Mediterranean–Zagros–Oman Tethyan ophiolites, located in the structural–tectonic zone of western Iran in the northern part of the Zagros main thrust. Doleritic sheeted dykes are well exposed within the ophiolite in the south of Sahneh. These dykes contain high MgO, Na2O, low TiO2 (2O5, and K2O contents, and high FeOt/MgO and LILE/HFSE ratios. Th...
متن کاملHomologies of the fissural patterns of the hemispheres of dog and cat.
The purpose of this study was to establish homologies in the patterns of sulci and gyri in the cortex of the dog and cat. The present aim is to sollve this problem on the basis of the principles specified in a previous paper which is concerned with the cortical homologiks of the dog and monkey (Kreiner 1961, 1966, 1968). The most important of these principles are as follows: 1. The adoption of ...
متن کاملsome characteristics of mafic dykes in gondwanan land from south of gorgan, northeastern iran: implication to petrogenesis and paleotectonic
the igneous dykes are a small mafic rock unit exposed in the south gorgan of eastern alborz, north iran. these mafic dykes are intruded in the middle–upper paleozoic sedimentary and metamorphic rocks units representing a part of the north gondwana province. the studied samples were collected from various locations along the exposed bodies. thin sections of these rocks show medium to coarse grai...
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ژورنال
عنوان ژورنال: Boletim IG-USP. Publicação Especial
سال: 1991
ISSN: 2317-8078,0102-6275
DOI: 10.11606/issn.2317-8078.v0i10p01-08