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Late Miocene to present exhumation in the Ligurian Alps (Southwest Alps) with evidence for accelerated denudation during the Messinian salinity crisis
Detrital apatite (U-Th)/He and fission-track thermochronometry are applied to constrain the exhumation history of the Ligurian Alps (southwest Alps). Exhumation of the Ligurian Alps is recorded from ca. 11 Ma and continues until present. More than 4 km of exhumation is recorded at an average rate of...
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Published in: | Geology (Boulder) 2003-09, Vol.31 (9), p.797-800 |
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creator | Foeken, J. P. T Dunai, T. J Bertotti, G Andriessen, P. A. M |
description | Detrital apatite (U-Th)/He and fission-track thermochronometry are applied to constrain the exhumation history of the Ligurian Alps (southwest Alps). Exhumation of the Ligurian Alps is recorded from ca. 11 Ma and continues until present. More than 4 km of exhumation is recorded at an average rate of 0.4 ± 0.2 mm/yr. Exhumation is accommodated along a north-dipping thrust at the foot of the Ligurian margin. Combined (U-Th)/He and fission-track thermal modeling show a phase of accelerated denudation between 7 and 5 Ma, associated with the base-level drop during the Messinian salinity crisis. |
doi_str_mv | 10.1130/G19572.1 |
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M</creatorcontrib><title>Late Miocene to present exhumation in the Ligurian Alps (Southwest Alps) with evidence for accelerated denudation during the Messinian salinity crisis</title><title>Geology (Boulder)</title><description>Detrital apatite (U-Th)/He and fission-track thermochronometry are applied to constrain the exhumation history of the Ligurian Alps (southwest Alps). Exhumation of the Ligurian Alps is recorded from ca. 11 Ma and continues until present. More than 4 km of exhumation is recorded at an average rate of 0.4 ± 0.2 mm/yr. Exhumation is accommodated along a north-dipping thrust at the foot of the Ligurian margin. 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Combined (U-Th)/He and fission-track thermal modeling show a phase of accelerated denudation between 7 and 5 Ma, associated with the base-level drop during the Messinian salinity crisis.</abstract><cop>Boulder</cop><pub>Geological Society of America (GSA)</pub><doi>10.1130/G19572.1</doi><tpages>4</tpages></addata></record> |
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subjects | (U-Th)/He absolute age Alps apatite Cenozoic dates denudation Europe Exhumation faults fission-track dating Geochronology Geology He/He Italy Liguria Italy Ligurian Alps Messinian Miocene Mountains Neogene neotectonics paleosalinity phosphates rates Southern Europe Structural geology tectonics Tertiary Th/U thermal history thermochronology thrust faults upper Miocene vertical movements Western Alps |
title | Late Miocene to present exhumation in the Ligurian Alps (Southwest Alps) with evidence for accelerated denudation during the Messinian salinity crisis |
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