Timing of pegmatite emplacement and skarn formation in the Malyovitsa Unit, NW Rila: evidence from zonal grossular crystals.
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| Title: | Timing of pegmatite emplacement and skarn formation in the Malyovitsa Unit, NW Rila: evidence from zonal grossular crystals. |
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| Alternate Title: | Възраст на внедряване на пегматити и скарнообразуване в Мальовишката единица, СЗ Рила по данни от зонални гросуларови кристали |
| Authors: | Vassileva, Rossitsa D.1 rosivas@geology.bas.bg, Petrussenko, Svetoslav2 svet_petrussenko@yahoo.com, Grozdev, Valentin1 val.grozdev@gmail.com, Peytcheva, Irena1 irena.peytcheva@erdw.ethz.ch, Plotkina, Yulia3 jplotkina@yandex.ru, von Quadt, Albrecht4 albrecht.vonquadt@erdw.ethz.ch |
| Source: | Review of the Bulgarian Geological Society. 2022, Vol. 83 Issue 3, p121-124. 4p. |
| Subjects: | Skarn, Minerals, Metamorphic rocks, Crystals, Uranium-lead dating, Geological time scales |
| Abstract: | Contact Ca-skarns are formed in the marbles of the Malyovitsa Lithotectonic Unit as a result of emplacement of crosscutting pegmatite injections in the area of the Dzhendemski Ezera, NW Rila Mt. Large (up to 4 cm), well-shaped garnet crystals dominate the mineral association with additional vesuvianite, diopside, scapolite and zoisite. Garnets were selected for mineralogical, geochemical and U-Pb geochronological study. Their crystals show clear zonal pattern due to variation in the octahedral position (Fe3+/Al3+), although the overall composition defines grossular predominance (72-95 mol.% grossular; 4-24% andradite). Trace-element signatures reveal constant isomorphic incorporation of P, V, Zn, Ga, Ge and Y, REE, HFSE, U. Results from the in-situ U-Pb dating of the studied skarn materials suggest the timing of pegmatite intrusion onto the metamorphic rocks and marble-hosted skarn formation at 58.37±0.70 Ma. [ABSTRACT FROM AUTHOR] |
| Copyright of Review of the Bulgarian Geological Society is the property of Bulgarian Geological Society 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.) | |
| Database: | Engineering Source |
| FullText | Links: – Type: pdflink Text: Availability: 0 |
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| Header | DbId: egs DbLabel: Engineering Source An: 161222610 AccessLevel: 6 PubType: Academic Journal PubTypeId: academicJournal PreciseRelevancyScore: 0 |
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| Items | – Name: Title Label: Title Group: Ti Data: Timing of pegmatite emplacement and skarn formation in the Malyovitsa Unit, NW Rila: evidence from zonal grossular crystals. – Name: TitleAlt Label: Alternate Title Group: TiAlt Data: Възраст на внедряване на пегматити и скарнообразуване в Мальовишката единица, СЗ Рила по данни от зонални гросуларови кристали – Name: Author Label: Authors Group: Au Data: <searchLink fieldCode="AR" term="%22Vassileva%2C+Rossitsa+D%2E%22">Vassileva, Rossitsa D.</searchLink><relatesTo>1</relatesTo><i> rosivas@geology.bas.bg</i><br /><searchLink fieldCode="AR" term="%22Petrussenko%2C+Svetoslav%22">Petrussenko, Svetoslav</searchLink><relatesTo>2</relatesTo><i> svet_petrussenko@yahoo.com</i><br /><searchLink fieldCode="AR" term="%22Grozdev%2C+Valentin%22">Grozdev, Valentin</searchLink><relatesTo>1</relatesTo><i> val.grozdev@gmail.com</i><br /><searchLink fieldCode="AR" term="%22Peytcheva%2C+Irena%22">Peytcheva, Irena</searchLink><relatesTo>1</relatesTo><i> irena.peytcheva@erdw.ethz.ch</i><br /><searchLink fieldCode="AR" term="%22Plotkina%2C+Yulia%22">Plotkina, Yulia</searchLink><relatesTo>3</relatesTo><i> jplotkina@yandex.ru</i><br /><searchLink fieldCode="AR" term="%22von+Quadt%2C+Albrecht%22">von Quadt, Albrecht</searchLink><relatesTo>4</relatesTo><i> albrecht.vonquadt@erdw.ethz.ch</i> – Name: TitleSource Label: Source Group: Src Data: <searchLink fieldCode="JN" term="%22Review+of+the+Bulgarian+Geological+Society%22">Review of the Bulgarian Geological Society</searchLink>. 2022, Vol. 83 Issue 3, p121-124. 4p. – Name: Subject Label: Subjects Group: Su Data: <searchLink fieldCode="DE" term="%22Skarn%22">Skarn</searchLink><br /><searchLink fieldCode="DE" term="%22Minerals%22">Minerals</searchLink><br /><searchLink fieldCode="DE" term="%22Metamorphic+rocks%22">Metamorphic rocks</searchLink><br /><searchLink fieldCode="DE" term="%22Crystals%22">Crystals</searchLink><br /><searchLink fieldCode="DE" term="%22Uranium-lead+dating%22">Uranium-lead dating</searchLink><br /><searchLink fieldCode="DE" term="%22Geological+time+scales%22">Geological time scales</searchLink> – Name: Abstract Label: Abstract Group: Ab Data: Contact Ca-skarns are formed in the marbles of the Malyovitsa Lithotectonic Unit as a result of emplacement of crosscutting pegmatite injections in the area of the Dzhendemski Ezera, NW Rila Mt. Large (up to 4 cm), well-shaped garnet crystals dominate the mineral association with additional vesuvianite, diopside, scapolite and zoisite. Garnets were selected for mineralogical, geochemical and U-Pb geochronological study. Their crystals show clear zonal pattern due to variation in the octahedral position (Fe3+/Al3+), although the overall composition defines grossular predominance (72-95 mol.% grossular; 4-24% andradite). Trace-element signatures reveal constant isomorphic incorporation of P, V, Zn, Ga, Ge and Y, REE, HFSE, U. Results from the in-situ U-Pb dating of the studied skarn materials suggest the timing of pegmatite intrusion onto the metamorphic rocks and marble-hosted skarn formation at 58.37±0.70 Ma. [ABSTRACT FROM AUTHOR] – Name: AbstractSuppliedCopyright Label: Group: Ab Data: <i>Copyright of Review of the Bulgarian Geological Society is the property of Bulgarian Geological Society 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: 10.52215/rev.bgs.2022.83.3.121 Languages: – Code: eng Text: English PhysicalDescription: Pagination: PageCount: 4 StartPage: 121 Subjects: – SubjectFull: Skarn Type: general – SubjectFull: Minerals Type: general – SubjectFull: Metamorphic rocks Type: general – SubjectFull: Crystals Type: general – SubjectFull: Uranium-lead dating Type: general – SubjectFull: Geological time scales Type: general Titles: – TitleFull: Timing of pegmatite emplacement and skarn formation in the Malyovitsa Unit, NW Rila: evidence from zonal grossular crystals. Type: main BibRelationships: HasContributorRelationships: – PersonEntity: Name: NameFull: Vassileva, Rossitsa D. – PersonEntity: Name: NameFull: Petrussenko, Svetoslav – PersonEntity: Name: NameFull: Grozdev, Valentin – PersonEntity: Name: NameFull: Peytcheva, Irena – PersonEntity: Name: NameFull: Plotkina, Yulia – PersonEntity: Name: NameFull: von Quadt, Albrecht IsPartOfRelationships: – BibEntity: Dates: – D: 01 M: 09 Text: 2022 Type: published Y: 2022 Identifiers: – Type: issn-print Value: 00073938 Numbering: – Type: volume Value: 83 – Type: issue Value: 3 Titles: – TitleFull: Review of the Bulgarian Geological Society Type: main |
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