Stutenbecker, Laura ; Tollan, Peter M. E. ; Madella, Andrea ; Lanari, Pierre (2019)
Miocene basement exhumation in the Central Alps recorded by detrital garnet geochemistry in foreland basin deposits.
In: Solid Earth, 10 (5)
doi: 10.5194/se-10-1581-2019
Artikel, Bibliographie
Dies ist die neueste Version dieses Eintrags.
Kurzbeschreibung (Abstract)
The Neogene evolution of the European Alps was characterized by the exhumation of crystalline basement, the so-called external crystalline massifs. Their exhumation presumably controlled the evolution of relief, distribution of drainage networks, and generation of sediment in the Central Alps. However, due to the absence of suitable proxies, the timing of their surficial exposure and thus the initiation of sediment supply from these areas are poorly constrained.
The northern Alpine foreland basin preserves the Oligocene to Miocene sedimentary record of tectonic and climatic adjustments in the hinterland. This contribution analyses the provenance of 25 to 14 Myr old alluvial fan deposits by means of detrital garnet chemistry. Unusually grossular- and spessartine-rich garnet is found (1) to be a unique proxy for identifying detritus from the external crystalline massifs and (2) to occur abundantly in ca. 14 Myr old deposits of the foreland basin. In contrast to previous assumptions, we therefore propose that the external massifs were already exposed to the surface ca. 14 Myr ago.
| Typ des Eintrags: | Artikel |
|---|---|
| Erschienen: | 2019 |
| Autor(en): | Stutenbecker, Laura ; Tollan, Peter M. E. ; Madella, Andrea ; Lanari, Pierre |
| Art des Eintrags: | Bibliographie |
| Titel: | Miocene basement exhumation in the Central Alps recorded by detrital garnet geochemistry in foreland basin deposits |
| Sprache: | Englisch |
| Publikationsjahr: | 2019 |
| Verlag: | Copernicus |
| Titel der Zeitschrift, Zeitung oder Schriftenreihe: | Solid Earth |
| Jahrgang/Volume einer Zeitschrift: | 10 |
| (Heft-)Nummer: | 5 |
| DOI: | 10.5194/se-10-1581-2019 |
| Zugehörige Links: | |
| Kurzbeschreibung (Abstract): | The Neogene evolution of the European Alps was characterized by the exhumation of crystalline basement, the so-called external crystalline massifs. Their exhumation presumably controlled the evolution of relief, distribution of drainage networks, and generation of sediment in the Central Alps. However, due to the absence of suitable proxies, the timing of their surficial exposure and thus the initiation of sediment supply from these areas are poorly constrained. The northern Alpine foreland basin preserves the Oligocene to Miocene sedimentary record of tectonic and climatic adjustments in the hinterland. This contribution analyses the provenance of 25 to 14 Myr old alluvial fan deposits by means of detrital garnet chemistry. Unusually grossular- and spessartine-rich garnet is found (1) to be a unique proxy for identifying detritus from the external crystalline massifs and (2) to occur abundantly in ca. 14 Myr old deposits of the foreland basin. In contrast to previous assumptions, we therefore propose that the external massifs were already exposed to the surface ca. 14 Myr ago. |
| Sachgruppe der Dewey Dezimalklassifikatin (DDC): | 500 Naturwissenschaften und Mathematik > 550 Geowissenschaften |
| Fachbereich(e)/-gebiet(e): | 11 Fachbereich Material- und Geowissenschaften 11 Fachbereich Material- und Geowissenschaften > Geowissenschaften 11 Fachbereich Material- und Geowissenschaften > Geowissenschaften > Fachgebiet Angewandte Sedimentgeologie |
| Hinterlegungsdatum: | 27 Sep 2019 06:42 |
| Letzte Änderung: | 03 Jul 2024 02:42 |
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| Suche nach Titel in: | TUfind oder in Google |
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Miocene basement exhumation in the Central Alps recorded by detrital garnet geochemistry in foreland basin deposits. (deposited 25 Okt 2019 14:00)
- Miocene basement exhumation in the Central Alps recorded by detrital garnet geochemistry in foreland basin deposits. (deposited 27 Sep 2019 06:42) [Gegenwärtig angezeigt]
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