المستودع الأكاديمي جامعة المدينة

Origine des grenats des roches calco-alcalines du Sud-Est de l'Espagne

أعرض تسجيلة المادة بشكل مبسط

dc.creator López Ruiz, J.
dc.creator Rodríguez Badiola, Eduardo
dc.creator García Cacho, L.
dc.date 2008-03-12T11:50:06Z
dc.date 2008-03-12T11:50:06Z
dc.date 1977-09
dc.date.accessioned 2017-01-31T01:00:40Z
dc.date.available 2017-01-31T01:00:40Z
dc.identifier Bulletin of Volcanology Volume 40, Number 3 1-12
dc.identifier 0366-483X
dc.identifier http://hdl.handle.net/10261/3209
dc.identifier 10.1007/BF02596996
dc.identifier.uri http://dspace.mediu.edu.my:8181/xmlui/handle/10261/3209
dc.description Los auteurs remercient le docteur V. ARAÑA de l'Institut Lucas Mallada (C.S.I.C.) la lecture critique du manuscrit. Le docteur F. DIMANCHE de l'Université de Liége a réalisé la traduction en français du travail.
dc.description Tertiary dacites and rhyodacites in SE Spain contain garnets, both as phenocrysts in the lavas and within their enclosed metamorphic xenoliths. Microprobe analyses show that calc-alkaline and metamorphic rocks garnets are quite similar in composition (almandine-rich). However, the zoning patterns displayed in the two types of garnets differ. Garnets included in lavas show normal zoning (or a slight enrichment of Mn at the borders), while garnets in xenoliths have Mn-enriched rims or reverse zoning. The differences in zonation, as well as in petrographic features, indicate that the garnets in volcanic rocks crystallized directly from the calc-alkaline magma at an early stage of its crystallization. On the other hand, the uniform composition of dacitic and rhyodacitic garnets, as well as its low pyrope and grossular content, suggest that the conditions in which the garnets crystallized were rapidly exceeded.
dc.description "Instituto Lucas Mallada" (C.S.I.C.)
dc.description Peer reviewed
dc.format 258555 bytes
dc.format application/octet-stream
dc.language fra
dc.publisher Springer
dc.relation http://dx.doi.org/10.1007/BF02596996
dc.rights closedAccess
dc.subject Calc-alkaline rocks
dc.subject dacites - rhyodacites
dc.subject garnets almandine
dc.subject SE Spain
dc.title Origine des grenats des roches calco-alcalines du Sud-Est de l'Espagne
dc.type Artículo


الملفات في هذه المادة

الملفات الحجم الصيغة عرض

لا توجد أي ملفات مرتبطة بهذه المادة.

هذه المادة تبدو في المجموعات التالية:

أعرض تسجيلة المادة بشكل مبسط