Jonas Kaempf
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View article: Garnet as a reliable timekeeper in Archean polymetamorphic terranes
Garnet as a reliable timekeeper in Archean polymetamorphic terranes Open
View article: Thermal Structure of a Paleoproterozoic Orogen: A Case Study from the Wutai–Fuping Crustal Section
Thermal Structure of a Paleoproterozoic Orogen: A Case Study from the Wutai–Fuping Crustal Section Open
Exhumed orogenic belts contain the only physical record of the processing of Earth’s crust during tectonic cycles and are, therefore, the critical regions where constraints on geodynamic processes can be developed. Reconstructing metamorph…
View article: A Paleoarchaean impact crater in the Pilbara Craton, Western Australia
A Paleoarchaean impact crater in the Pilbara Craton, Western Australia Open
The role of meteorite impacts in the origin, modification, and destruction of crust during the first two billion years of Earth history (4.5-2.5 billion years ago; Ga) is disputed. Whereas some argue for a relatively minor contribution ove…
View article: Multi-method geochronology and isotope geochemistry of carbonatites in the Aileron Province, central Australia
Multi-method geochronology and isotope geochemistry of carbonatites in the Aileron Province, central Australia Open
Carbonatites are complex rocks yet globally significant hosts of critical mineral resources. Mitigating exploration risk demands robust understanding of their geodynamic setting, which hinges on constraining the timing, duration and nature…
View article: Archean Polymetamorphism in the Central Dharwar Craton, Southern India
Archean Polymetamorphism in the Central Dharwar Craton, Southern India Open
Petrochronological investigations of granulite‐facies metapelitic rocks from the eastern contact of the Closepet granite in the Central Dharwar Craton (CDC), southern India, provide new pressure–temperature–age ( P–T–t ) constraints on two…
View article: Eoarchean granulite-facies metamorphism in the Itsaq Gneiss Complex, southwest Greenland
Eoarchean granulite-facies metamorphism in the Itsaq Gneiss Complex, southwest Greenland Open
View article: Paleoarchean metamorphism in the Acasta Gneiss Complex: Constraints from phase equilibrium modelling and in situ garnet Lu–Hf geochronology
Paleoarchean metamorphism in the Acasta Gneiss Complex: Constraints from phase equilibrium modelling and in situ garnet Lu–Hf geochronology Open
The oldest known evolved (felsic) rocks on Earth ( c . 4.03 Ga) are found in the Acasta Gneiss Complex (AGC) in north‐western Canada and represent a fundamental keystone in unravelling the geological processes governing crustal growth and …
View article: Bimodality in zircon oxygen isotopes and implications for crustal melting on the early Earth
Bimodality in zircon oxygen isotopes and implications for crustal melting on the early Earth Open
Zircons from the oldest dated felsic crust, the Acasta Gneiss Complex, Canada, provide key information that may help understand the generation of crust on our nascent planet. When screened to eliminate grains with secondary alteration by m…
View article: Pressure–temperature conditions and age of metamorphism in the Archean Acasta Gneiss Complex: constraints from phase equilibrium modelling and in situ garnet Lu-Hf geochronology
Pressure–temperature conditions and age of metamorphism in the Archean Acasta Gneiss Complex: constraints from phase equilibrium modelling and in situ garnet Lu-Hf geochronology Open
The Acasta Gneiss Complex (AGC) in northwestern Canada is home to the oldest known evolved (felsic) rocks on Earth, dating back to around 4.03 billion years (Ga). These rocks preserve evidence for multiple episodes of magmatism, metamorphi…