| 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 |
|