Late Miocene uplift in the Romagnan Apennines and the detachment of subducted lithosphere

M. J. Van Der Meulen; T. J. Kouwenhoven; G. J. Van Der Zwaan; J. E. Meulenkamp; M. J.R. Wortel

doi:10.1016/S0040-1951(99)00282-6

Late Miocene uplift in the Romagnan Apennines and the detachment of subducted lithosphere

M. J. Van Der Meulen, T. J. Kouwenhoven, G. J. Van Der Zwaan, J. E. Meulenkamp, M. J.R. Wortel

Research output: Contribution to journal › Article › Academic › peer-review

Abstract

We report part of a test of the hypothesis that detachment of subducted lithosphere may be a process of lateral propagation of a horizontal tear [Wortel and Spakman, Proc. Kon. Ned. Akad. Wetensch., 95 (1992) 325-347]. We have used the Apennines as a test area. The test procedure consists of the comparison of hypothetical vertical motions, predicted from the expected redistribution of slab pull forces, with observed vertical motions. We demonstrate that a Late Miocene depocentre migration from the Northern towards the Central Apennines is associated with uplift of (the fore-arc of) the Northern Apennines. Such a combination of a depocentre shift and uplift is thought to be diagnostic for lateral migration of slab detachment. The depocentre migration was identified in earlier work [van der Meulen et al., Earth Planet. Sci. Lett., 154 (1998) 203-219]. This contribution focuses on uplift, which has primarily been identified through the geohistory analysis of the Monte del Casino Section (Romagnan Apennines, Northern Italy). Owing to methodological problems, the start and duration of the uplift phase could not be constrained, and only a minimum estimate of the total amount of uplift (483 ± 180 m) is obtained. The data do allow for an estimate of the uplift rate: 163 ± 61 cm/ky. A review of regional data results in better constraints on the timing of the above lateral reorganisation of the fore-arc, and on the spatial extent of the uplifted area. Depocentre development in the Central Apennines began between 8.6 and 8.3 Ma B.P. Uplift started between 9 and 8 Ma B.P., and affected the entire northernmost Apennines. (C) 1999 Elsevier Science B.V. All rights reserved.

Original language	English
Pages (from-to)	319-335
Number of pages	17
Journal	Tectonophysics
Volume	315
Issue number	1-4
DOIs	https://doi.org/10.1016/S0040-1951(99)00282-6
Publication status	Published - 31 Dec 1999

Bibliographical note

Funding Information:
F.J. Hilgen, E. Carminati, L.J. Lourens, and A.J. van der Meulen are acknowledged for discussion and suggestions. A. Okx and J. de Wit are thanked for sample picking. G.J. van't Veld and G.C. Ittmann prepared the samples. We thank the reviewers F. Roure and A. Fortuin for helpful suggestions. This work was conducted at the Faculty of Earth Sciences, Utrecht University, under the programme of the Vening Meinesz Research School of Geodynamics (VMSG). M.J. van der Meulen acknowledges financial support from the Geosciences Foundation (GOA, currently ALW) of the Netherlands Organization for Scientific Research (NWO).

Funding

F.J. Hilgen, E. Carminati, L.J. Lourens, and A.J. van der Meulen are acknowledged for discussion and suggestions. A. Okx and J. de Wit are thanked for sample picking. G.J. van't Veld and G.C. Ittmann prepared the samples. We thank the reviewers F. Roure and A. Fortuin for helpful suggestions. This work was conducted at the Faculty of Earth Sciences, Utrecht University, under the programme of the Vening Meinesz Research School of Geodynamics (VMSG). M.J. van der Meulen acknowledges financial support from the Geosciences Foundation (GOA, currently ALW) of the Netherlands Organization for Scientific Research (NWO).

Keywords

Apennines
Basin analysis
Foredeep
Italy
Late Miocene
Messinian
Slab detachment
Southern Europe
Stratigraphy
Tortonian

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title = "Late Miocene uplift in the Romagnan Apennines and the detachment of subducted lithosphere",

abstract = "We report part of a test of the hypothesis that detachment of subducted lithosphere may be a process of lateral propagation of a horizontal tear [Wortel and Spakman, Proc. Kon. Ned. Akad. Wetensch., 95 (1992) 325-347]. We have used the Apennines as a test area. The test procedure consists of the comparison of hypothetical vertical motions, predicted from the expected redistribution of slab pull forces, with observed vertical motions. We demonstrate that a Late Miocene depocentre migration from the Northern towards the Central Apennines is associated with uplift of (the fore-arc of) the Northern Apennines. Such a combination of a depocentre shift and uplift is thought to be diagnostic for lateral migration of slab detachment. The depocentre migration was identified in earlier work [van der Meulen et al., Earth Planet. Sci. Lett., 154 (1998) 203-219]. This contribution focuses on uplift, which has primarily been identified through the geohistory analysis of the Monte del Casino Section (Romagnan Apennines, Northern Italy). Owing to methodological problems, the start and duration of the uplift phase could not be constrained, and only a minimum estimate of the total amount of uplift (483 ± 180 m) is obtained. The data do allow for an estimate of the uplift rate: 163 ± 61 cm/ky. A review of regional data results in better constraints on the timing of the above lateral reorganisation of the fore-arc, and on the spatial extent of the uplifted area. Depocentre development in the Central Apennines began between 8.6 and 8.3 Ma B.P. Uplift started between 9 and 8 Ma B.P., and affected the entire northernmost Apennines. (C) 1999 Elsevier Science B.V. All rights reserved.",

keywords = "Apennines, Basin analysis, Foredeep, Italy, Late Miocene, Messinian, Slab detachment, Southern Europe, Stratigraphy, Tortonian",

author = "{Van Der Meulen}, {M. J.} and Kouwenhoven, {T. J.} and {Van Der Zwaan}, {G. J.} and Meulenkamp, {J. E.} and Wortel, {M. J.R.}",

note = "Funding Information: F.J. Hilgen, E. Carminati, L.J. Lourens, and A.J. van der Meulen are acknowledged for discussion and suggestions. A. Okx and J. de Wit are thanked for sample picking. G.J. van't Veld and G.C. Ittmann prepared the samples. We thank the reviewers F. Roure and A. Fortuin for helpful suggestions. This work was conducted at the Faculty of Earth Sciences, Utrecht University, under the programme of the Vening Meinesz Research School of Geodynamics (VMSG). M.J. van der Meulen acknowledges financial support from the Geosciences Foundation (GOA, currently ALW) of the Netherlands Organization for Scientific Research (NWO). ",

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AU - Van Der Meulen, M. J.

AU - Kouwenhoven, T. J.

AU - Van Der Zwaan, G. J.

AU - Meulenkamp, J. E.

AU - Wortel, M. J.R.

N1 - Funding Information: F.J. Hilgen, E. Carminati, L.J. Lourens, and A.J. van der Meulen are acknowledged for discussion and suggestions. A. Okx and J. de Wit are thanked for sample picking. G.J. van't Veld and G.C. Ittmann prepared the samples. We thank the reviewers F. Roure and A. Fortuin for helpful suggestions. This work was conducted at the Faculty of Earth Sciences, Utrecht University, under the programme of the Vening Meinesz Research School of Geodynamics (VMSG). M.J. van der Meulen acknowledges financial support from the Geosciences Foundation (GOA, currently ALW) of the Netherlands Organization for Scientific Research (NWO).

PY - 1999/12/31

Y1 - 1999/12/31

N2 - We report part of a test of the hypothesis that detachment of subducted lithosphere may be a process of lateral propagation of a horizontal tear [Wortel and Spakman, Proc. Kon. Ned. Akad. Wetensch., 95 (1992) 325-347]. We have used the Apennines as a test area. The test procedure consists of the comparison of hypothetical vertical motions, predicted from the expected redistribution of slab pull forces, with observed vertical motions. We demonstrate that a Late Miocene depocentre migration from the Northern towards the Central Apennines is associated with uplift of (the fore-arc of) the Northern Apennines. Such a combination of a depocentre shift and uplift is thought to be diagnostic for lateral migration of slab detachment. The depocentre migration was identified in earlier work [van der Meulen et al., Earth Planet. Sci. Lett., 154 (1998) 203-219]. This contribution focuses on uplift, which has primarily been identified through the geohistory analysis of the Monte del Casino Section (Romagnan Apennines, Northern Italy). Owing to methodological problems, the start and duration of the uplift phase could not be constrained, and only a minimum estimate of the total amount of uplift (483 ± 180 m) is obtained. The data do allow for an estimate of the uplift rate: 163 ± 61 cm/ky. A review of regional data results in better constraints on the timing of the above lateral reorganisation of the fore-arc, and on the spatial extent of the uplifted area. Depocentre development in the Central Apennines began between 8.6 and 8.3 Ma B.P. Uplift started between 9 and 8 Ma B.P., and affected the entire northernmost Apennines. (C) 1999 Elsevier Science B.V. All rights reserved.

AB - We report part of a test of the hypothesis that detachment of subducted lithosphere may be a process of lateral propagation of a horizontal tear [Wortel and Spakman, Proc. Kon. Ned. Akad. Wetensch., 95 (1992) 325-347]. We have used the Apennines as a test area. The test procedure consists of the comparison of hypothetical vertical motions, predicted from the expected redistribution of slab pull forces, with observed vertical motions. We demonstrate that a Late Miocene depocentre migration from the Northern towards the Central Apennines is associated with uplift of (the fore-arc of) the Northern Apennines. Such a combination of a depocentre shift and uplift is thought to be diagnostic for lateral migration of slab detachment. The depocentre migration was identified in earlier work [van der Meulen et al., Earth Planet. Sci. Lett., 154 (1998) 203-219]. This contribution focuses on uplift, which has primarily been identified through the geohistory analysis of the Monte del Casino Section (Romagnan Apennines, Northern Italy). Owing to methodological problems, the start and duration of the uplift phase could not be constrained, and only a minimum estimate of the total amount of uplift (483 ± 180 m) is obtained. The data do allow for an estimate of the uplift rate: 163 ± 61 cm/ky. A review of regional data results in better constraints on the timing of the above lateral reorganisation of the fore-arc, and on the spatial extent of the uplifted area. Depocentre development in the Central Apennines began between 8.6 and 8.3 Ma B.P. Uplift started between 9 and 8 Ma B.P., and affected the entire northernmost Apennines. (C) 1999 Elsevier Science B.V. All rights reserved.

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KW - Basin analysis

KW - Foredeep

KW - Italy

KW - Late Miocene

KW - Messinian

KW - Slab detachment

KW - Southern Europe

KW - Stratigraphy

KW - Tortonian

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JF - Tectonophysics

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ER -

Late Miocene uplift in the Romagnan Apennines and the detachment of subducted lithosphere

Abstract

Bibliographical note

Funding

Keywords

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