Browsing Department of Earth Science by Author "Jacobs, Joachim"
Now showing items 1-11 of 11
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Alps to Apennines zircon roller coaster along the Adria microplate margin
Jacobs, Joachim; Paoli, Gabriele; Rocchi, Sergio; Ksienzyk, Anna Katharina; Sirevaag, Hallgeir; Elburg, Marlina (Peer reviewed; Journal article, 2018-02-09)We have traced the particle path of high-pressure metasedimentary rocks on Elba Island, Northern Apennines, with the help of a U-Pb-Hf detrital zircon study. One quarter of the analysed zircons are surprisingly young, ... -
Alps to Apennines zircon roller coaster along the Adria microplate margin
Jacobs, Joachim; Paoli, Gabriele; Rocchi, Sergio; Ksienzyk, Anna Katharina; Sirevaag, Hallgeir; Elburg, Marlina (Peer reviewed; Journal article, 2018-02-09)We have traced the particle path of high-pressure metasedimentary rocks on Elba Island, Northern Apennines, with the help of a U-Pb-Hf detrital zircon study. One quarter of the analysed zircons are surprisingly young, ... -
Deep Crustal Flow Within Postorogenic Metamorphic Core Complexes: Insights From the Southern Western Gneiss Region of Norway
Wiest, Johannes; Osmundsen, Per Terje; Jacobs, Joachim; Fossen, Haakon (Peer reviewed; Journal article, 2019)Viscous crustal flow can exhume once deeply buried rocks in postorogenic metamorphic core complexes (MCCs). While migmatite domes record the flow dynamics of anatectic crust, the mechanics and kinematics of solid‐state ... -
Grenville-age continental arc magmatism and crustal evolution in central Dronning Maud Land (East Antarctica): Zircon geochronological and Hf-O isotopic evidence
Wang, Cheng-Cheng; Jacobs, Joachim; Elburg, Marlina A.; Läufer, Andreas; Thomas, Robert J.; Elvevold, Synnøve (Peer reviewed; Journal article, 2020)This study focusses on the Grenville-age Maud Belt in Dronning Maud Land (DML), East Antarctica, which was located at the margin of the Proto-Kalahari Craton during the assembly of Rodinia. We present new U–Pb zircon ages ... -
Late Neoproterozoic–Cambrian magmatism in Dronning Maud Land (East Antarctica): U–Pb zircon geochronology, isotope geochemistry and implications for Gondwana assembly
Wang, Cheng-Cheng; Jacobs, Joachim; Elburg, Marlina; Läufer, Andreas; Elvevold, Synnøve (Journal article; Peer reviewed, 2020)Dronning Maud Land (DML) is a key area for the better understanding of the geotectonic history and amalgamation processes of the southern part of Gondwana. Here, we present comprehensive new zircon U–Pb–Hf–O, whole-rock ... -
Protracted late Neoproterozic – early Palaeozoic deformation and cooling history of Sør Rondane, East Antarctica, from 40Ar/39Ar and U–Pb geochronology
Ruppel, Antonia S.; Jacobs, Joachim; Läufer, Andreas; Ratschbacher, Lothar (Journal article; Peer reviewed, 2020)40Ar/39Ar and U–Pb data from five structural domains constrain the late Neoproterozoic – early Palaeozoic tectonothermal history of the eastern part of the East African–Antarctic Orogen in Sør Rondane. A total of 27 new ... -
Segmentation of the Caledonian orogenic infrastructure and exhumation of the Western Gneiss Region during transtensional collapse
Wiest, Johannes; Jacobs, Joachim; Fossen, Haakon; Ganerød, Morgan; Osmundsen, Per Terje (Journal article; Peer reviewed, 2021)The (ultra)high-pressure Western Gneiss Region of the Norwegian Caledonides represents an archetypical orogenic infrastructure of a continent–continent collision zone. To test established exhumation models, we synthesize ... -
Shear zone evolution during core complex exhumation – Implications for continental detachments
Wiest, Johannes; Fossen, Haakon; Jacobs, Joachim (Journal article; Peer reviewed, 2020)The formation of low-angle detachments involves exhumation of previously ductile material and fault zone weakening. To better understand this relationship, we studied a deeply eroded metamorphic core complex, which formed ... -
Substantial spatial variation in glacial erosion rates in the Dronning Maud Land Mountains, East Antarctica
Sirevaag, Hallgeir; Jacobs, Joachim; Ksienzyk, Anna Katharina (Journal article; Peer reviewed, 2021)The coast-parallel Dronning Maud Land (DML) mountains represent a key nucleation site for the protracted glaciation of Antarctica. Their evolution is therefore of special interest for understanding the formation and ... -
Tectono-thermal evolution and morphodynamics of the central dronning maud land mountains, east antarctica, based on new thermochronological data
Sirevaag, Hallgeir; Ksienzyk, Anna Katharina; Jacobs, Joachim; Dunkl, István; Läufer, Andreas (Peer reviewed; Journal article, 2018-10-26)The lack of preserved Mesozoic–Cenozoic sediments and structures in central Dronning Maud Land has so far limited our understanding of the post-Pan-African evolution of this important part of East Antarctica. In order to ... -
Tracing the Sveconorwegian orogen into the Caledonides of West Norway: Geochronological and isotopic studies on magmatism and migmatization
Wang, Cheng-Cheng; Wiest, Johannes; Jacobs, Joachim; Bingen, Bernard; Whitehouse, Martin J.; Elburg, Marlina; Sørstrand, Thea Sætren; Mikkelsen, Lise; Hestnes, Åse (Journal article; Peer reviewed, 2021)The Sveconorwegian orogen represents a branch of Grenville-age (~1250–950 Ma) orogenic belts that formed during the construction of the supercontinent Rodinia. This study traces the Sveconorwegian records from its type-area ...