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Magma emplacement in a thrust ramp anticline: The Gavorrano Granite (northern Apennines, Italy)
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| Zeitschriftentitel: | Tectonics |
|---|---|
| Personen und Körperschaften: | , , , , |
| In: | Tectonics, 24, 2005, 6 |
| Format: | E-Article |
| Sprache: | Englisch |
| veröffentlicht: |
American Geophysical Union (AGU)
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| Schlagwörter: |
| author_facet |
Musumeci, G. Mazzarini, F. Corti, G. Barsella, M. Montanari, D. Musumeci, G. Mazzarini, F. Corti, G. Barsella, M. Montanari, D. |
|---|---|
| author |
Musumeci, G. Mazzarini, F. Corti, G. Barsella, M. Montanari, D. |
| spellingShingle |
Musumeci, G. Mazzarini, F. Corti, G. Barsella, M. Montanari, D. Tectonics Magma emplacement in a thrust ramp anticline: The Gavorrano Granite (northern Apennines, Italy) Geochemistry and Petrology Geophysics |
| author_sort |
musumeci, g. |
| spelling |
Musumeci, G. Mazzarini, F. Corti, G. Barsella, M. Montanari, D. 0278-7407 1944-9194 American Geophysical Union (AGU) Geochemistry and Petrology Geophysics http://dx.doi.org/10.1029/2005tc001801 <jats:p>Magma emplacement in the upper crust is often associated with crustal extension, whereby space for intrusions is made by dilation along transtensive and strike‐slip faults. The lenticular shape of several intrusions indicates that a further mechanism for magma intrusion is laccolith emplacement with roof uplift of the overburden. Additionally, melts exploit rheological discontinuities (e.g., sedimentary layering) during their ascent. We present an emplacement model for intrusion of the shallow level Gavorrano Granite (northern Apennine, Italy), which is located at the core of an open anticline. The shape of the intrusion and structural features of the host rocks are indicative of a synkinematic emplacement in a growing thrust anticline. Space was provided by the opening of dilatation zones at the core of anticline as a consequence of different amounts of translation between hanging wall and footwall units which were separated by evaporitic rocks. These evaporitic units acted as major décollement layers. Analog models provide results in good agreement with the structural setting of the anticline and emphasize the possibility that melts filled the dilatation zone, with the décollement layers further facilitating intrusion.</jats:p> Magma emplacement in a thrust ramp anticline: The Gavorrano Granite (northern Apennines, Italy) Tectonics |
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| title |
Magma emplacement in a thrust ramp anticline: The Gavorrano Granite (northern Apennines, Italy) |
| title_unstemmed |
Magma emplacement in a thrust ramp anticline: The Gavorrano Granite (northern Apennines, Italy) |
| title_full |
Magma emplacement in a thrust ramp anticline: The Gavorrano Granite (northern Apennines, Italy) |
| title_fullStr |
Magma emplacement in a thrust ramp anticline: The Gavorrano Granite (northern Apennines, Italy) |
| title_full_unstemmed |
Magma emplacement in a thrust ramp anticline: The Gavorrano Granite (northern Apennines, Italy) |
| title_short |
Magma emplacement in a thrust ramp anticline: The Gavorrano Granite (northern Apennines, Italy) |
| title_sort |
magma emplacement in a thrust ramp anticline: the gavorrano granite (northern apennines, italy) |
| topic |
Geochemistry and Petrology Geophysics |
| url |
http://dx.doi.org/10.1029/2005tc001801 |
| publishDate |
2005 |
| physical |
|
| description |
<jats:p>Magma emplacement in the upper crust is often associated with crustal extension, whereby space for intrusions is made by dilation along transtensive and strike‐slip faults. The lenticular shape of several intrusions indicates that a further mechanism for magma intrusion is laccolith emplacement with roof uplift of the overburden. Additionally, melts exploit rheological discontinuities (e.g., sedimentary layering) during their ascent. We present an emplacement model for intrusion of the shallow level Gavorrano Granite (northern Apennine, Italy), which is located at the core of an open anticline. The shape of the intrusion and structural features of the host rocks are indicative of a synkinematic emplacement in a growing thrust anticline. Space was provided by the opening of dilatation zones at the core of anticline as a consequence of different amounts of translation between hanging wall and footwall units which were separated by evaporitic rocks. These evaporitic units acted as major décollement layers. Analog models provide results in good agreement with the structural setting of the anticline and emphasize the possibility that melts filled the dilatation zone, with the décollement layers further facilitating intrusion.</jats:p> |
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| author | Musumeci, G., Mazzarini, F., Corti, G., Barsella, M., Montanari, D. |
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| description | <jats:p>Magma emplacement in the upper crust is often associated with crustal extension, whereby space for intrusions is made by dilation along transtensive and strike‐slip faults. The lenticular shape of several intrusions indicates that a further mechanism for magma intrusion is laccolith emplacement with roof uplift of the overburden. Additionally, melts exploit rheological discontinuities (e.g., sedimentary layering) during their ascent. We present an emplacement model for intrusion of the shallow level Gavorrano Granite (northern Apennine, Italy), which is located at the core of an open anticline. The shape of the intrusion and structural features of the host rocks are indicative of a synkinematic emplacement in a growing thrust anticline. Space was provided by the opening of dilatation zones at the core of anticline as a consequence of different amounts of translation between hanging wall and footwall units which were separated by evaporitic rocks. These evaporitic units acted as major décollement layers. Analog models provide results in good agreement with the structural setting of the anticline and emphasize the possibility that melts filled the dilatation zone, with the décollement layers further facilitating intrusion.</jats:p> |
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| spelling | Musumeci, G. Mazzarini, F. Corti, G. Barsella, M. Montanari, D. 0278-7407 1944-9194 American Geophysical Union (AGU) Geochemistry and Petrology Geophysics http://dx.doi.org/10.1029/2005tc001801 <jats:p>Magma emplacement in the upper crust is often associated with crustal extension, whereby space for intrusions is made by dilation along transtensive and strike‐slip faults. The lenticular shape of several intrusions indicates that a further mechanism for magma intrusion is laccolith emplacement with roof uplift of the overburden. Additionally, melts exploit rheological discontinuities (e.g., sedimentary layering) during their ascent. We present an emplacement model for intrusion of the shallow level Gavorrano Granite (northern Apennine, Italy), which is located at the core of an open anticline. The shape of the intrusion and structural features of the host rocks are indicative of a synkinematic emplacement in a growing thrust anticline. Space was provided by the opening of dilatation zones at the core of anticline as a consequence of different amounts of translation between hanging wall and footwall units which were separated by evaporitic rocks. These evaporitic units acted as major décollement layers. Analog models provide results in good agreement with the structural setting of the anticline and emphasize the possibility that melts filled the dilatation zone, with the décollement layers further facilitating intrusion.</jats:p> Magma emplacement in a thrust ramp anticline: The Gavorrano Granite (northern Apennines, Italy) Tectonics |
| spellingShingle | Musumeci, G., Mazzarini, F., Corti, G., Barsella, M., Montanari, D., Tectonics, Magma emplacement in a thrust ramp anticline: The Gavorrano Granite (northern Apennines, Italy), Geochemistry and Petrology, Geophysics |
| title | Magma emplacement in a thrust ramp anticline: The Gavorrano Granite (northern Apennines, Italy) |
| title_full | Magma emplacement in a thrust ramp anticline: The Gavorrano Granite (northern Apennines, Italy) |
| title_fullStr | Magma emplacement in a thrust ramp anticline: The Gavorrano Granite (northern Apennines, Italy) |
| title_full_unstemmed | Magma emplacement in a thrust ramp anticline: The Gavorrano Granite (northern Apennines, Italy) |
| title_short | Magma emplacement in a thrust ramp anticline: The Gavorrano Granite (northern Apennines, Italy) |
| title_sort | magma emplacement in a thrust ramp anticline: the gavorrano granite (northern apennines, italy) |
| title_unstemmed | Magma emplacement in a thrust ramp anticline: The Gavorrano Granite (northern Apennines, Italy) |
| topic | Geochemistry and Petrology, Geophysics |
| url | http://dx.doi.org/10.1029/2005tc001801 |