Hercynian blueschist metamorphism in North Portugal: tectonothermal implications
Abstract Aegirine–jadeite clinopyroxene (>60 mol% jadeite) locally occurs within blueschists of the ‘Lower Allochthon’exposed in the Trás-os-Montes region of northern Portugal. Peak conditions attained during blueschist facies metamorphism are estimated to have been c. 420° C and >11 kbar. Por...
Ausführliche Beschreibung
Gespeichert in:
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GIL IBARGUCHI, J. I. [verfasserIn] DALLMEYER, R. D. [verfasserIn] |
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E-Artikel |
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Oxford, UK: Blackwell Publishing Ltd ; 1991 |
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Online-Ressource |
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2007 ; Blackwell Publishing Journal Backfiles 1879-2005 |
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| Übergeordnetes Werk: |
In: Journal of metamorphic geology - Oxford [u.a.] : Wiley-Blackwell, 1983, 9(1991), 5, Seite 0 |
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volume:9 ; year:1991 ; number:5 ; pages:0 |
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| DOI / URN: |
10.1111/j.1525-1314.1991.tb00547.x |
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| 520 | |a Abstract Aegirine–jadeite clinopyroxene (>60 mol% jadeite) locally occurs within blueschists of the ‘Lower Allochthon’exposed in the Trás-os-Montes region of northern Portugal. Peak conditions attained during blueschist facies metamorphism are estimated to have been c. 420° C and >11 kbar. Porphyroblastic white mica (paragonite/phengite) within the blueschist assemblage records a 36Ar/40Ar versus 39Ar/40Ar isotope correlation age of 329.4 ± 1.6 Ma. In view of the relatively low-T nature of the metamorphism, the c. 330-Ma age is interpreted to date closely the high-P recrystallization. This tectonothermal activity is interpreted to have resulted from structural emplacement of a previously assembled crystalline nappe complex (‘Upper Allochthon/Ophiolite Nappe’) onto Iberian protoliths of the Lower Allochthon during terminal stages of the Hercynian orogeny. | ||
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10.1111/j.1525-1314.1991.tb00547.x doi (DE-627)NLEJ24037956X DE-627 ger DE-627 rakwb GIL IBARGUCHI, J. I. verfasserin aut Hercynian blueschist metamorphism in North Portugal: tectonothermal implications Oxford, UK Blackwell Publishing Ltd 1991 Online-Ressource nicht spezifiziert zzz rdacontent nicht spezifiziert z rdamedia nicht spezifiziert zu rdacarrier Abstract Aegirine–jadeite clinopyroxene (>60 mol% jadeite) locally occurs within blueschists of the ‘Lower Allochthon’exposed in the Trás-os-Montes region of northern Portugal. Peak conditions attained during blueschist facies metamorphism are estimated to have been c. 420° C and >11 kbar. Porphyroblastic white mica (paragonite/phengite) within the blueschist assemblage records a 36Ar/40Ar versus 39Ar/40Ar isotope correlation age of 329.4 ± 1.6 Ma. In view of the relatively low-T nature of the metamorphism, the c. 330-Ma age is interpreted to date closely the high-P recrystallization. This tectonothermal activity is interpreted to have resulted from structural emplacement of a previously assembled crystalline nappe complex (‘Upper Allochthon/Ophiolite Nappe’) onto Iberian protoliths of the Lower Allochthon during terminal stages of the Hercynian orogeny. 2007 Blackwell Publishing Journal Backfiles 1879-2005 |2007|||||||||| DALLMEYER, R. D. verfasserin aut In Journal of metamorphic geology Oxford [u.a.] : Wiley-Blackwell, 1983 9(1991), 5, Seite 0 Online-Ressource (DE-627)NLEJ243926766 (DE-600)2020499-1 1525-1314 nnns volume:9 year:1991 number:5 pages:0 http://dx.doi.org/10.1111/j.1525-1314.1991.tb00547.x text/html Verlag Deutschlandweit zugänglich Volltext GBV_USEFLAG_U ZDB-1-DJB GBV_NL_ARTICLE AR 9 1991 5 0 |
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10.1111/j.1525-1314.1991.tb00547.x doi (DE-627)NLEJ24037956X DE-627 ger DE-627 rakwb GIL IBARGUCHI, J. I. verfasserin aut Hercynian blueschist metamorphism in North Portugal: tectonothermal implications Oxford, UK Blackwell Publishing Ltd 1991 Online-Ressource nicht spezifiziert zzz rdacontent nicht spezifiziert z rdamedia nicht spezifiziert zu rdacarrier Abstract Aegirine–jadeite clinopyroxene (>60 mol% jadeite) locally occurs within blueschists of the ‘Lower Allochthon’exposed in the Trás-os-Montes region of northern Portugal. Peak conditions attained during blueschist facies metamorphism are estimated to have been c. 420° C and >11 kbar. Porphyroblastic white mica (paragonite/phengite) within the blueschist assemblage records a 36Ar/40Ar versus 39Ar/40Ar isotope correlation age of 329.4 ± 1.6 Ma. In view of the relatively low-T nature of the metamorphism, the c. 330-Ma age is interpreted to date closely the high-P recrystallization. This tectonothermal activity is interpreted to have resulted from structural emplacement of a previously assembled crystalline nappe complex (‘Upper Allochthon/Ophiolite Nappe’) onto Iberian protoliths of the Lower Allochthon during terminal stages of the Hercynian orogeny. 2007 Blackwell Publishing Journal Backfiles 1879-2005 |2007|||||||||| DALLMEYER, R. D. verfasserin aut In Journal of metamorphic geology Oxford [u.a.] : Wiley-Blackwell, 1983 9(1991), 5, Seite 0 Online-Ressource (DE-627)NLEJ243926766 (DE-600)2020499-1 1525-1314 nnns volume:9 year:1991 number:5 pages:0 http://dx.doi.org/10.1111/j.1525-1314.1991.tb00547.x text/html Verlag Deutschlandweit zugänglich Volltext GBV_USEFLAG_U ZDB-1-DJB GBV_NL_ARTICLE AR 9 1991 5 0 |
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10.1111/j.1525-1314.1991.tb00547.x doi (DE-627)NLEJ24037956X DE-627 ger DE-627 rakwb GIL IBARGUCHI, J. I. verfasserin aut Hercynian blueschist metamorphism in North Portugal: tectonothermal implications Oxford, UK Blackwell Publishing Ltd 1991 Online-Ressource nicht spezifiziert zzz rdacontent nicht spezifiziert z rdamedia nicht spezifiziert zu rdacarrier Abstract Aegirine–jadeite clinopyroxene (>60 mol% jadeite) locally occurs within blueschists of the ‘Lower Allochthon’exposed in the Trás-os-Montes region of northern Portugal. Peak conditions attained during blueschist facies metamorphism are estimated to have been c. 420° C and >11 kbar. Porphyroblastic white mica (paragonite/phengite) within the blueschist assemblage records a 36Ar/40Ar versus 39Ar/40Ar isotope correlation age of 329.4 ± 1.6 Ma. In view of the relatively low-T nature of the metamorphism, the c. 330-Ma age is interpreted to date closely the high-P recrystallization. This tectonothermal activity is interpreted to have resulted from structural emplacement of a previously assembled crystalline nappe complex (‘Upper Allochthon/Ophiolite Nappe’) onto Iberian protoliths of the Lower Allochthon during terminal stages of the Hercynian orogeny. 2007 Blackwell Publishing Journal Backfiles 1879-2005 |2007|||||||||| DALLMEYER, R. D. verfasserin aut In Journal of metamorphic geology Oxford [u.a.] : Wiley-Blackwell, 1983 9(1991), 5, Seite 0 Online-Ressource (DE-627)NLEJ243926766 (DE-600)2020499-1 1525-1314 nnns volume:9 year:1991 number:5 pages:0 http://dx.doi.org/10.1111/j.1525-1314.1991.tb00547.x text/html Verlag Deutschlandweit zugänglich Volltext GBV_USEFLAG_U ZDB-1-DJB GBV_NL_ARTICLE AR 9 1991 5 0 |
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10.1111/j.1525-1314.1991.tb00547.x doi (DE-627)NLEJ24037956X DE-627 ger DE-627 rakwb GIL IBARGUCHI, J. I. verfasserin aut Hercynian blueschist metamorphism in North Portugal: tectonothermal implications Oxford, UK Blackwell Publishing Ltd 1991 Online-Ressource nicht spezifiziert zzz rdacontent nicht spezifiziert z rdamedia nicht spezifiziert zu rdacarrier Abstract Aegirine–jadeite clinopyroxene (>60 mol% jadeite) locally occurs within blueschists of the ‘Lower Allochthon’exposed in the Trás-os-Montes region of northern Portugal. Peak conditions attained during blueschist facies metamorphism are estimated to have been c. 420° C and >11 kbar. Porphyroblastic white mica (paragonite/phengite) within the blueschist assemblage records a 36Ar/40Ar versus 39Ar/40Ar isotope correlation age of 329.4 ± 1.6 Ma. In view of the relatively low-T nature of the metamorphism, the c. 330-Ma age is interpreted to date closely the high-P recrystallization. This tectonothermal activity is interpreted to have resulted from structural emplacement of a previously assembled crystalline nappe complex (‘Upper Allochthon/Ophiolite Nappe’) onto Iberian protoliths of the Lower Allochthon during terminal stages of the Hercynian orogeny. 2007 Blackwell Publishing Journal Backfiles 1879-2005 |2007|||||||||| DALLMEYER, R. D. verfasserin aut In Journal of metamorphic geology Oxford [u.a.] : Wiley-Blackwell, 1983 9(1991), 5, Seite 0 Online-Ressource (DE-627)NLEJ243926766 (DE-600)2020499-1 1525-1314 nnns volume:9 year:1991 number:5 pages:0 http://dx.doi.org/10.1111/j.1525-1314.1991.tb00547.x text/html Verlag Deutschlandweit zugänglich Volltext GBV_USEFLAG_U ZDB-1-DJB GBV_NL_ARTICLE AR 9 1991 5 0 |
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10.1111/j.1525-1314.1991.tb00547.x doi (DE-627)NLEJ24037956X DE-627 ger DE-627 rakwb GIL IBARGUCHI, J. I. verfasserin aut Hercynian blueschist metamorphism in North Portugal: tectonothermal implications Oxford, UK Blackwell Publishing Ltd 1991 Online-Ressource nicht spezifiziert zzz rdacontent nicht spezifiziert z rdamedia nicht spezifiziert zu rdacarrier Abstract Aegirine–jadeite clinopyroxene (>60 mol% jadeite) locally occurs within blueschists of the ‘Lower Allochthon’exposed in the Trás-os-Montes region of northern Portugal. Peak conditions attained during blueschist facies metamorphism are estimated to have been c. 420° C and >11 kbar. Porphyroblastic white mica (paragonite/phengite) within the blueschist assemblage records a 36Ar/40Ar versus 39Ar/40Ar isotope correlation age of 329.4 ± 1.6 Ma. In view of the relatively low-T nature of the metamorphism, the c. 330-Ma age is interpreted to date closely the high-P recrystallization. This tectonothermal activity is interpreted to have resulted from structural emplacement of a previously assembled crystalline nappe complex (‘Upper Allochthon/Ophiolite Nappe’) onto Iberian protoliths of the Lower Allochthon during terminal stages of the Hercynian orogeny. 2007 Blackwell Publishing Journal Backfiles 1879-2005 |2007|||||||||| DALLMEYER, R. D. verfasserin aut In Journal of metamorphic geology Oxford [u.a.] : Wiley-Blackwell, 1983 9(1991), 5, Seite 0 Online-Ressource (DE-627)NLEJ243926766 (DE-600)2020499-1 1525-1314 nnns volume:9 year:1991 number:5 pages:0 http://dx.doi.org/10.1111/j.1525-1314.1991.tb00547.x text/html Verlag Deutschlandweit zugänglich Volltext GBV_USEFLAG_U ZDB-1-DJB GBV_NL_ARTICLE AR 9 1991 5 0 |
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Abstract Aegirine–jadeite clinopyroxene (>60 mol% jadeite) locally occurs within blueschists of the ‘Lower Allochthon’exposed in the Trás-os-Montes region of northern Portugal. Peak conditions attained during blueschist facies metamorphism are estimated to have been c. 420° C and >11 kbar. Porphyroblastic white mica (paragonite/phengite) within the blueschist assemblage records a 36Ar/40Ar versus 39Ar/40Ar isotope correlation age of 329.4 ± 1.6 Ma. In view of the relatively low-T nature of the metamorphism, the c. 330-Ma age is interpreted to date closely the high-P recrystallization. This tectonothermal activity is interpreted to have resulted from structural emplacement of a previously assembled crystalline nappe complex (‘Upper Allochthon/Ophiolite Nappe’) onto Iberian protoliths of the Lower Allochthon during terminal stages of the Hercynian orogeny. |
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Abstract Aegirine–jadeite clinopyroxene (>60 mol% jadeite) locally occurs within blueschists of the ‘Lower Allochthon’exposed in the Trás-os-Montes region of northern Portugal. Peak conditions attained during blueschist facies metamorphism are estimated to have been c. 420° C and >11 kbar. Porphyroblastic white mica (paragonite/phengite) within the blueschist assemblage records a 36Ar/40Ar versus 39Ar/40Ar isotope correlation age of 329.4 ± 1.6 Ma. In view of the relatively low-T nature of the metamorphism, the c. 330-Ma age is interpreted to date closely the high-P recrystallization. This tectonothermal activity is interpreted to have resulted from structural emplacement of a previously assembled crystalline nappe complex (‘Upper Allochthon/Ophiolite Nappe’) onto Iberian protoliths of the Lower Allochthon during terminal stages of the Hercynian orogeny. |
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Abstract Aegirine–jadeite clinopyroxene (>60 mol% jadeite) locally occurs within blueschists of the ‘Lower Allochthon’exposed in the Trás-os-Montes region of northern Portugal. Peak conditions attained during blueschist facies metamorphism are estimated to have been c. 420° C and >11 kbar. Porphyroblastic white mica (paragonite/phengite) within the blueschist assemblage records a 36Ar/40Ar versus 39Ar/40Ar isotope correlation age of 329.4 ± 1.6 Ma. In view of the relatively low-T nature of the metamorphism, the c. 330-Ma age is interpreted to date closely the high-P recrystallization. This tectonothermal activity is interpreted to have resulted from structural emplacement of a previously assembled crystalline nappe complex (‘Upper Allochthon/Ophiolite Nappe’) onto Iberian protoliths of the Lower Allochthon during terminal stages of the Hercynian orogeny. |
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<?xml version="1.0" encoding="UTF-8"?><collection xmlns="http://www.loc.gov/MARC21/slim"><record><leader>01000caa a22002652 4500</leader><controlfield tag="001">NLEJ24037956X</controlfield><controlfield tag="003">DE-627</controlfield><controlfield tag="005">20210707111113.0</controlfield><controlfield tag="007">cr uuu---uuuuu</controlfield><controlfield tag="008">120426s1991 xx |||||o 00| ||und c</controlfield><datafield tag="024" ind1="7" ind2=" "><subfield code="a">10.1111/j.1525-1314.1991.tb00547.x</subfield><subfield code="2">doi</subfield></datafield><datafield tag="035" ind1=" " ind2=" "><subfield code="a">(DE-627)NLEJ24037956X</subfield></datafield><datafield tag="040" ind1=" " ind2=" "><subfield code="a">DE-627</subfield><subfield code="b">ger</subfield><subfield code="c">DE-627</subfield><subfield code="e">rakwb</subfield></datafield><datafield tag="100" ind1="1" ind2=" "><subfield code="a">GIL IBARGUCHI, J. I.</subfield><subfield code="e">verfasserin</subfield><subfield code="4">aut</subfield></datafield><datafield tag="245" ind1="1" ind2="0"><subfield code="a">Hercynian blueschist metamorphism in North Portugal: tectonothermal implications</subfield></datafield><datafield tag="264" ind1=" " ind2="1"><subfield code="a">Oxford, UK</subfield><subfield code="b">Blackwell Publishing Ltd</subfield><subfield code="c">1991</subfield></datafield><datafield tag="300" ind1=" " ind2=" "><subfield code="a">Online-Ressource</subfield></datafield><datafield tag="336" ind1=" " ind2=" "><subfield code="a">nicht spezifiziert</subfield><subfield code="b">zzz</subfield><subfield code="2">rdacontent</subfield></datafield><datafield tag="337" ind1=" " ind2=" "><subfield code="a">nicht spezifiziert</subfield><subfield code="b">z</subfield><subfield code="2">rdamedia</subfield></datafield><datafield tag="338" ind1=" " ind2=" "><subfield code="a">nicht spezifiziert</subfield><subfield code="b">zu</subfield><subfield code="2">rdacarrier</subfield></datafield><datafield tag="520" ind1=" " ind2=" "><subfield code="a">Abstract Aegirine–jadeite clinopyroxene (>60 mol% jadeite) locally occurs within blueschists of the ‘Lower Allochthon’exposed in the Trás-os-Montes region of northern Portugal. Peak conditions attained during blueschist facies metamorphism are estimated to have been c. 420° C and >11 kbar. Porphyroblastic white mica (paragonite/phengite) within the blueschist assemblage records a 36Ar/40Ar versus 39Ar/40Ar isotope correlation age of 329.4 ± 1.6 Ma. In view of the relatively low-T nature of the metamorphism, the c. 330-Ma age is interpreted to date closely the high-P recrystallization. This tectonothermal activity is interpreted to have resulted from structural emplacement of a previously assembled crystalline nappe complex (‘Upper Allochthon/Ophiolite Nappe’) onto Iberian protoliths of the Lower Allochthon during terminal stages of the Hercynian orogeny.</subfield></datafield><datafield tag="533" ind1=" " ind2=" "><subfield code="d">2007</subfield><subfield code="f">Blackwell Publishing Journal Backfiles 1879-2005</subfield><subfield code="7">|2007||||||||||</subfield></datafield><datafield tag="700" ind1="1" ind2=" "><subfield code="a">DALLMEYER, R. D.</subfield><subfield code="e">verfasserin</subfield><subfield code="4">aut</subfield></datafield><datafield tag="773" ind1="0" ind2="8"><subfield code="i">In</subfield><subfield code="t">Journal of metamorphic geology</subfield><subfield code="d">Oxford [u.a.] : Wiley-Blackwell, 1983</subfield><subfield code="g">9(1991), 5, Seite 0</subfield><subfield code="h">Online-Ressource</subfield><subfield code="w">(DE-627)NLEJ243926766</subfield><subfield code="w">(DE-600)2020499-1</subfield><subfield code="x">1525-1314</subfield><subfield code="7">nnns</subfield></datafield><datafield tag="773" ind1="1" ind2="8"><subfield code="g">volume:9</subfield><subfield code="g">year:1991</subfield><subfield code="g">number:5</subfield><subfield code="g">pages:0</subfield></datafield><datafield tag="856" ind1="4" ind2="0"><subfield code="u">http://dx.doi.org/10.1111/j.1525-1314.1991.tb00547.x</subfield><subfield code="q">text/html</subfield><subfield code="x">Verlag</subfield><subfield code="z">Deutschlandweit zugänglich</subfield><subfield code="3">Volltext</subfield></datafield><datafield tag="912" ind1=" " ind2=" "><subfield code="a">GBV_USEFLAG_U</subfield></datafield><datafield tag="912" ind1=" " ind2=" "><subfield code="a">ZDB-1-DJB</subfield></datafield><datafield tag="912" ind1=" " ind2=" "><subfield code="a">GBV_NL_ARTICLE</subfield></datafield><datafield tag="951" ind1=" " ind2=" "><subfield code="a">AR</subfield></datafield><datafield tag="952" ind1=" " ind2=" "><subfield code="d">9</subfield><subfield code="j">1991</subfield><subfield code="e">5</subfield><subfield code="h">0</subfield></datafield></record></collection>
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