Mineralogy and petrology of lava of the Goldberg volcano, West Eifel volcanic field, Germany: Mineralogy and petrology of lava of the Goldberg volcano, West Eifel volcanic field, Germany: A. Pouclet et al.
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| Title: | Mineralogy and petrology of lava of the Goldberg volcano, West Eifel volcanic field, Germany: Mineralogy and petrology of lava of the Goldberg volcano, West Eifel volcanic field, Germany: A. Pouclet et al. |
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| Authors: | Pouclet, André1 (AUTHOR) andre.pouclet@sfr.fr, Bardintzeff, Jacques-Marie2 (AUTHOR) jacques-marie.bardintzeff@universite-paris-saclay.fr, Juvigné, Étienne3 (AUTHOR) ejuvigne@skynet.be |
| Source: | Mineralogy & Petrology. Mar2025, Vol. 119 Issue 1, p127-147. 21p. |
| Subjects: | Earth sciences, Volcanic fields, Petrology, Mineralogy, Geochemistry, Phlogopite |
| Abstract: | The Goldberg is the northwesternmost volcano of the West Eifel basanitic and nephelinitic volcanic field in Germany. It was built in the EARLY to MIDDLE PLEISTOCENE, during a monogenic eruption with successive phreatomagmatic and Strombolian activities. The lava is an olivine-, pyroxene-, and phlogopite-phyric leucite nephelinite. Olivine types comprise phenocrysts (Fo% 90–84) and some xenocrysts (Fo% 92). Different pyroxenes crystallised with compositions ranging from Mg-diopside in megacrysts to diopside in the green core of phenocrysts and fassaitic diopside in the rim of phenocrysts. These chemical variations are discussed in terms of correlation of the pyroxene solid solutions. They reveal complex processes with polybaric crystallisation under decreasing pressure for the megacrysts and the green cores of phenocrysts in an initial batch of magma. Then, due to a new supply of magma and its ascent though the crust, the green cores were coated with a different composition and new phenocrysts developed. Amphibole is scarce and consists of Ti-rich pargasite. Mica consists of Al-rich and Ti-rich phlogopite. K-rich nepheline and leucite are common in the groundmass. Oxides, haüyne, and apatite complete the mineral composition. Petrological data indicate the successive emplacement of several batches of magma. The bulk geochemical composition of the lava and scoria is mafic, potassic and highly undersaturated. The volcano belongs to the Eifel F-suite (Foidite). The normalized trace element patterns show a lithophile element enrichment except for Th and U, and a high field strength element depletion. Compared with the composition of the nephelinites and basanites of the western Germany volcanic fields, the Goldberg's magma shares similar mantle source and no crustal contamination. Geochemical data are consistent with a low degree of melting of an enriched mantle at the garnet-spinel transition region. Low Nb/Ta suggests a potential carbonatitic input into the melting region. [ABSTRACT FROM AUTHOR] |
| Copyright of Mineralogy & Petrology is the property of Springer Nature and its content may not be copied or emailed to multiple sites without the copyright holder's express written permission. Additionally, content may not be used with any artificial intelligence tools or machine learning technologies. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) | |
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| Header | DbId: egs DbLabel: Engineering Source An: 184470221 AccessLevel: 6 PubType: Academic Journal PubTypeId: academicJournal PreciseRelevancyScore: 0 |
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| Items | – Name: Title Label: Title Group: Ti Data: Mineralogy and petrology of lava of the Goldberg volcano, West Eifel volcanic field, Germany: Mineralogy and petrology of lava of the Goldberg volcano, West Eifel volcanic field, Germany: A. Pouclet et al. – Name: Author Label: Authors Group: Au Data: <searchLink fieldCode="AR" term="%22Pouclet%2C+André%22">Pouclet, André</searchLink><relatesTo>1</relatesTo> (AUTHOR)<i> andre.pouclet@sfr.fr</i><br /><searchLink fieldCode="AR" term="%22Bardintzeff%2C+Jacques-Marie%22">Bardintzeff, Jacques-Marie</searchLink><relatesTo>2</relatesTo> (AUTHOR)<i> jacques-marie.bardintzeff@universite-paris-saclay.fr</i><br /><searchLink fieldCode="AR" term="%22Juvigné%2C+Étienne%22">Juvigné, Étienne</searchLink><relatesTo>3</relatesTo> (AUTHOR)<i> ejuvigne@skynet.be</i> – Name: TitleSource Label: Source Group: Src Data: <searchLink fieldCode="JN" term="%22Mineralogy+%26+Petrology%22">Mineralogy & Petrology</searchLink>. Mar2025, Vol. 119 Issue 1, p127-147. 21p. – Name: Subject Label: Subjects Group: Su Data: <searchLink fieldCode="DE" term="%22Earth+sciences%22">Earth sciences</searchLink><br /><searchLink fieldCode="DE" term="%22Volcanic+fields%22">Volcanic fields</searchLink><br /><searchLink fieldCode="DE" term="%22Petrology%22">Petrology</searchLink><br /><searchLink fieldCode="DE" term="%22Mineralogy%22">Mineralogy</searchLink><br /><searchLink fieldCode="DE" term="%22Geochemistry%22">Geochemistry</searchLink><br /><searchLink fieldCode="DE" term="%22Phlogopite%22">Phlogopite</searchLink> – Name: Abstract Label: Abstract Group: Ab Data: The Goldberg is the northwesternmost volcano of the West Eifel basanitic and nephelinitic volcanic field in Germany. It was built in the EARLY to MIDDLE PLEISTOCENE, during a monogenic eruption with successive phreatomagmatic and Strombolian activities. The lava is an olivine-, pyroxene-, and phlogopite-phyric leucite nephelinite. Olivine types comprise phenocrysts (Fo% 90–84) and some xenocrysts (Fo% 92). Different pyroxenes crystallised with compositions ranging from Mg-diopside in megacrysts to diopside in the green core of phenocrysts and fassaitic diopside in the rim of phenocrysts. These chemical variations are discussed in terms of correlation of the pyroxene solid solutions. They reveal complex processes with polybaric crystallisation under decreasing pressure for the megacrysts and the green cores of phenocrysts in an initial batch of magma. Then, due to a new supply of magma and its ascent though the crust, the green cores were coated with a different composition and new phenocrysts developed. Amphibole is scarce and consists of Ti-rich pargasite. Mica consists of Al-rich and Ti-rich phlogopite. K-rich nepheline and leucite are common in the groundmass. Oxides, haüyne, and apatite complete the mineral composition. Petrological data indicate the successive emplacement of several batches of magma. The bulk geochemical composition of the lava and scoria is mafic, potassic and highly undersaturated. The volcano belongs to the Eifel F-suite (Foidite). The normalized trace element patterns show a lithophile element enrichment except for Th and U, and a high field strength element depletion. Compared with the composition of the nephelinites and basanites of the western Germany volcanic fields, the Goldberg's magma shares similar mantle source and no crustal contamination. Geochemical data are consistent with a low degree of melting of an enriched mantle at the garnet-spinel transition region. Low Nb/Ta suggests a potential carbonatitic input into the melting region. [ABSTRACT FROM AUTHOR] – Name: AbstractSuppliedCopyright Label: Group: Ab Data: <i>Copyright of Mineralogy & Petrology is the property of Springer Nature and its content may not be copied or emailed to multiple sites without the copyright holder's express written permission. Additionally, content may not be used with any artificial intelligence tools or machine learning technologies. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract.</i> (Copyright applies to all Abstracts.) |
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| RecordInfo | BibRecord: BibEntity: Identifiers: – Type: doi Value: 10.1007/s00710-024-00885-y Languages: – Code: eng Text: English PhysicalDescription: Pagination: PageCount: 21 StartPage: 127 Subjects: – SubjectFull: Earth sciences Type: general – SubjectFull: Volcanic fields Type: general – SubjectFull: Petrology Type: general – SubjectFull: Mineralogy Type: general – SubjectFull: Geochemistry Type: general – SubjectFull: Phlogopite Type: general Titles: – TitleFull: Mineralogy and petrology of lava of the Goldberg volcano, West Eifel volcanic field, Germany: Mineralogy and petrology of lava of the Goldberg volcano, West Eifel volcanic field, Germany: A. Pouclet et al. Type: main BibRelationships: HasContributorRelationships: – PersonEntity: Name: NameFull: Pouclet, André – PersonEntity: Name: NameFull: Bardintzeff, Jacques-Marie – PersonEntity: Name: NameFull: Juvigné, Étienne IsPartOfRelationships: – BibEntity: Dates: – D: 01 M: 03 Text: Mar2025 Type: published Y: 2025 Identifiers: – Type: issn-print Value: 09300708 Numbering: – Type: volume Value: 119 – Type: issue Value: 1 Titles: – TitleFull: Mineralogy & Petrology Type: main |
| ResultId | 1 |
