Table_1_The TTG-Amphibolite Terrains of Arctic Fennoscandia: Infinite Networks of Amphibolite Metatexite-Diatexite Transitions.XLSX
The Earth’s early basaltic crust converted episodically into felsic TTG (tonalite-trondhjemite-granodiorite) crust by unknown tectonic processes. To contribute to the debate on the possible tectonic settings of TTGs, this article illustrates and explains migmatite structures of Meso- to Neoarchean T...
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ftfrontimediafig:oai:figshare.com:article/12587471 2023-05-15T14:54:19+02:00 Table_1_The TTG-Amphibolite Terrains of Arctic Fennoscandia: Infinite Networks of Amphibolite Metatexite-Diatexite Transitions.XLSX Jaana Halla 2020-06-30T07:30:30Z https://doi.org/10.3389/feart.2020.00252.s001 https://figshare.com/articles/dataset/Table_1_The_TTG-Amphibolite_Terrains_of_Arctic_Fennoscandia_Infinite_Networks_of_Amphibolite_Metatexite-Diatexite_Transitions_XLSX/12587471 unknown doi:10.3389/feart.2020.00252.s001 https://figshare.com/articles/dataset/Table_1_The_TTG-Amphibolite_Terrains_of_Arctic_Fennoscandia_Infinite_Networks_of_Amphibolite_Metatexite-Diatexite_Transitions_XLSX/12587471 CC BY 4.0 CC-BY Solid Earth Sciences Climate Science Atmospheric Sciences not elsewhere classified Exploration Geochemistry Inorganic Geochemistry Isotope Geochemistry Organic Geochemistry Geochemistry not elsewhere classified Igneous and Metamorphic Petrology Ore Deposit Petrology Palaeontology (incl. Palynology) Structural Geology Tectonics Volcanology Geology not elsewhere classified Seismology and Seismic Exploration Glaciology Hydrogeology Natural Hazards Quaternary Environments Earth Sciences not elsewhere classified Evolutionary Impacts of Climate Change Archean TTG amphibolite metatexite diatexite Dataset 2020 ftfrontimediafig https://doi.org/10.3389/feart.2020.00252.s001 2020-07-01T22:54:05Z The Earth’s early basaltic crust converted episodically into felsic TTG (tonalite-trondhjemite-granodiorite) crust by unknown tectonic processes. To contribute to the debate on the possible tectonic settings of TTGs, this article illustrates and explains migmatite structures of Meso- to Neoarchean TTG-amphibolite terrains in Arctic Fennoscandia. The Lake Inari and Rommaeno complexes in northern Finland and West Troms Complex in northern Norway consist of folded and banded TTG gneisses with abundant amphibolite enclaves. The terrains show migmatite structures generated by in situ and in-source melting of amphibolites and repeated metatexite-diatexite transitions that form infinite and boundless interconnected networks over vast areas. The aim of this article is to show that the TTGs of these terrains represent coalesced in situ and in-source neosomes of amphibolite protoliths and are not similar to granitoids sensu stricto generated by modern-style plate tectonics. The structures of the TTG-amphibolite associations of Arctic Fennoscandia suggest intracrustal differentiation by syn-anatectic partial melting of amphibolites in deep parts of a thick mafic crust. Dataset Arctic Climate change Fennoscandia Inari Northern Finland Northern Norway Troms Frontiers: Figshare Arctic Norway Inari ENVELOPE(27.029,27.029,68.906,68.906) |
institution |
Open Polar |
collection |
Frontiers: Figshare |
op_collection_id |
ftfrontimediafig |
language |
unknown |
topic |
Solid Earth Sciences Climate Science Atmospheric Sciences not elsewhere classified Exploration Geochemistry Inorganic Geochemistry Isotope Geochemistry Organic Geochemistry Geochemistry not elsewhere classified Igneous and Metamorphic Petrology Ore Deposit Petrology Palaeontology (incl. Palynology) Structural Geology Tectonics Volcanology Geology not elsewhere classified Seismology and Seismic Exploration Glaciology Hydrogeology Natural Hazards Quaternary Environments Earth Sciences not elsewhere classified Evolutionary Impacts of Climate Change Archean TTG amphibolite metatexite diatexite |
spellingShingle |
Solid Earth Sciences Climate Science Atmospheric Sciences not elsewhere classified Exploration Geochemistry Inorganic Geochemistry Isotope Geochemistry Organic Geochemistry Geochemistry not elsewhere classified Igneous and Metamorphic Petrology Ore Deposit Petrology Palaeontology (incl. Palynology) Structural Geology Tectonics Volcanology Geology not elsewhere classified Seismology and Seismic Exploration Glaciology Hydrogeology Natural Hazards Quaternary Environments Earth Sciences not elsewhere classified Evolutionary Impacts of Climate Change Archean TTG amphibolite metatexite diatexite Jaana Halla Table_1_The TTG-Amphibolite Terrains of Arctic Fennoscandia: Infinite Networks of Amphibolite Metatexite-Diatexite Transitions.XLSX |
topic_facet |
Solid Earth Sciences Climate Science Atmospheric Sciences not elsewhere classified Exploration Geochemistry Inorganic Geochemistry Isotope Geochemistry Organic Geochemistry Geochemistry not elsewhere classified Igneous and Metamorphic Petrology Ore Deposit Petrology Palaeontology (incl. Palynology) Structural Geology Tectonics Volcanology Geology not elsewhere classified Seismology and Seismic Exploration Glaciology Hydrogeology Natural Hazards Quaternary Environments Earth Sciences not elsewhere classified Evolutionary Impacts of Climate Change Archean TTG amphibolite metatexite diatexite |
description |
The Earth’s early basaltic crust converted episodically into felsic TTG (tonalite-trondhjemite-granodiorite) crust by unknown tectonic processes. To contribute to the debate on the possible tectonic settings of TTGs, this article illustrates and explains migmatite structures of Meso- to Neoarchean TTG-amphibolite terrains in Arctic Fennoscandia. The Lake Inari and Rommaeno complexes in northern Finland and West Troms Complex in northern Norway consist of folded and banded TTG gneisses with abundant amphibolite enclaves. The terrains show migmatite structures generated by in situ and in-source melting of amphibolites and repeated metatexite-diatexite transitions that form infinite and boundless interconnected networks over vast areas. The aim of this article is to show that the TTGs of these terrains represent coalesced in situ and in-source neosomes of amphibolite protoliths and are not similar to granitoids sensu stricto generated by modern-style plate tectonics. The structures of the TTG-amphibolite associations of Arctic Fennoscandia suggest intracrustal differentiation by syn-anatectic partial melting of amphibolites in deep parts of a thick mafic crust. |
format |
Dataset |
author |
Jaana Halla |
author_facet |
Jaana Halla |
author_sort |
Jaana Halla |
title |
Table_1_The TTG-Amphibolite Terrains of Arctic Fennoscandia: Infinite Networks of Amphibolite Metatexite-Diatexite Transitions.XLSX |
title_short |
Table_1_The TTG-Amphibolite Terrains of Arctic Fennoscandia: Infinite Networks of Amphibolite Metatexite-Diatexite Transitions.XLSX |
title_full |
Table_1_The TTG-Amphibolite Terrains of Arctic Fennoscandia: Infinite Networks of Amphibolite Metatexite-Diatexite Transitions.XLSX |
title_fullStr |
Table_1_The TTG-Amphibolite Terrains of Arctic Fennoscandia: Infinite Networks of Amphibolite Metatexite-Diatexite Transitions.XLSX |
title_full_unstemmed |
Table_1_The TTG-Amphibolite Terrains of Arctic Fennoscandia: Infinite Networks of Amphibolite Metatexite-Diatexite Transitions.XLSX |
title_sort |
table_1_the ttg-amphibolite terrains of arctic fennoscandia: infinite networks of amphibolite metatexite-diatexite transitions.xlsx |
publishDate |
2020 |
url |
https://doi.org/10.3389/feart.2020.00252.s001 https://figshare.com/articles/dataset/Table_1_The_TTG-Amphibolite_Terrains_of_Arctic_Fennoscandia_Infinite_Networks_of_Amphibolite_Metatexite-Diatexite_Transitions_XLSX/12587471 |
long_lat |
ENVELOPE(27.029,27.029,68.906,68.906) |
geographic |
Arctic Norway Inari |
geographic_facet |
Arctic Norway Inari |
genre |
Arctic Climate change Fennoscandia Inari Northern Finland Northern Norway Troms |
genre_facet |
Arctic Climate change Fennoscandia Inari Northern Finland Northern Norway Troms |
op_relation |
doi:10.3389/feart.2020.00252.s001 https://figshare.com/articles/dataset/Table_1_The_TTG-Amphibolite_Terrains_of_Arctic_Fennoscandia_Infinite_Networks_of_Amphibolite_Metatexite-Diatexite_Transitions_XLSX/12587471 |
op_rights |
CC BY 4.0 |
op_rightsnorm |
CC-BY |
op_doi |
https://doi.org/10.3389/feart.2020.00252.s001 |
_version_ |
1766326036547502080 |