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  • Deformation  (2)
  • Hercynian belt  (2)
  • Iberian Massif  (2)
  • 1
    Electronic Resource
    Electronic Resource
    Unstable flow, magma mixing and magma-rock deformation in a deep-seated conduit: the Gil-Márquez Complex, south-west Spain (1995)
    Springer
    Geologische Rundschau 84 (1995), S. 359-374 
    Details
    ISSN: 0016-7835
    Keywords: Key words Magma mixing ; Granite ; Enclaves ; Iberian Massif ; Deformation ; Conduit ; Magma flow
    Source: Springer Online Journal Archives 1860-2000
    Topics: Geosciences
    Notes: Abstract  The Gil-Márquez Complex is an exceptional outcrop of plutonic rocks ranging in composition from diorites to granites emplaced into Devonian terrigenous metasediments of the southernmost part of the Hercynian basement of Iberia. A combined study of this complex, including field geology, petrology, structural geology and geochemistry, reveals that it represents an ancient conduit of magma transport through the continental crust. This conduit allowed the intrusion of magmas of contrasted compositions. Two end-members and several hybrids are identified. The first end-member is a biotite granite and the second is a basaltic magma generated by partial melting of a depleted-mantle source. Both magmas rose through a common channel in which favorable conditions for unstable flow and magma mixing occurred. The observed relations in the Gil-Márquez Complex show that mixing in conduits may be an important mechanism for producing homogeneous hybrid magmas.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00260446
    Library Location Call Number Volume/Issue/Year Availability
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    Paper (German National Licenses)
    Fulltext
  • 2
    Electronic Resource
    Electronic Resource
    Triple-junction migration during Paleozoic plate convergence: the Aracena metamorphic belt, Hercynian massif, Spain (1996)
    Springer
    Geologische Rundschau 85 (1996), S. 180-185 
    Details
    ISSN: 0016-7835
    Keywords: Key words Triple junctions ; Aracena metamorphic belt ; Inverted metamorphic gradient ; Amphibolites ; Granulites ; Hercynian belt
    Source: Springer Online Journal Archives 1860-2000
    Topics: Geosciences
    Notes: Abstract  New data on the petrology and structure of the Aracena metamorphic belt shows that this is a subduction-related, low-pressure/high-temperature complex developed by plate convergence at the north margin of Gondwana during the Paleozoic. The low-pressure, inverted metamorphic gradient in MORB-derived amphibolites resulted from heating from the continental hanging wall during subduction. This implies that the previous heating of the continental rocks was related to subduction of an oceanic ridge and the creation of a slab window beneath the continental margin. This slab window brought the asthenosphere in contact with the continental margin inducing a shallow thermal anomaly and partial melting of the lithospheric mantle resulting in boninite magmatism.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00192076
    Library Location Call Number Volume/Issue/Year Availability
    BibTip Others were also interested in ...
    Paper (German National Licenses)
    Fulltext
  • 3
    Electronic Resource
    Electronic Resource
    Triple-junction migration during Paleozoic plate convergence: the Aracena metamorphic belt, Hercynian massif, Spain (1996)
    Springer
    International journal of earth sciences 85 (1996), S. 180-185 
    Details
    ISSN: 1437-3262
    Keywords: Triple junctions ; Aracena metamorphic belt ; Inverted metamorphic gradient ; Amphibolites ; Granulites ; Hercynian belt
    Source: Springer Online Journal Archives 1860-2000
    Topics: Geosciences
    Notes: Abstract New data on the petrology and structure of the Aracena metamorphic belt shows that this is a subduction-related, low-pressure/high-temperature complex developed by plate convergence at the north margin of Gondwana during the Paleozoic. The low-pressure, inverted metamorphic gradient in MORB-derived amphibolites resulted from heating from the continental hanging wall during subduction. This implies that the previous heating of the continental rocks was related to subduction of an oceanic ridge and the creation of a slab window beneath the continental margin. This slab window brought the asthenosphere in contact with the continental margin inducing a shallow thermal anomaly and partial melting of the lithospheric mantle resulting in boninite magmatism.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00192076
    Library Location Call Number Volume/Issue/Year Availability
    BibTip Others were also interested in ...
    Paper (German National Licenses)
    Fulltext
  • 4
    Electronic Resource
    Electronic Resource
    Unstable flow, magma mixing and magma-rock deformation in a deep-seated conduit: the Gil-Márquez Complex, south-west Spain (1995)
    Springer
    International journal of earth sciences 84 (1995), S. 359-374 
    Details
    ISSN: 1437-3262
    Keywords: Magma mixing ; Granite ; Enclaves ; Iberian Massif ; Deformation ; Conduit ; Magma flow
    Source: Springer Online Journal Archives 1860-2000
    Topics: Geosciences
    Notes: Abstract The Gil-Marquez Complex is an exceptional outcrop of plutonic rocks ranging in composition from diorites to granites emplaced into Devonian terrigenous metasediments of the southernmost part of the Hercynian basement of Iberia. A combined study of this complex, including field geology, petrology, structural geology and geochemistry, reveals that it represents an ancient conduit of magma transport through the continental crust. This conduit allowed the intrusion of magmas of contrasted compositions. Two end-members and several hybrids are identified. The first end-member is a biotite granite and the second is a basaltic magma generated by partial melting of a depletedmantle source. Both magmas rose through a common channel in which favorable conditions for unstable flow and magma mixing occurred. The observed relations in the Gil-Márquez Complex show that mixing in conduits may be an important mechanism for producing homogeneous hybrid magmas.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00260446
    Library Location Call Number Volume/Issue/Year Availability
    BibTip Others were also interested in ...
    Paper (German National Licenses)
    Fulltext
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