Rotation of Sardinia: Palaeomagnetic Evidence from Permian Rocks

Zijderveld, J.D.A.; Jong, Kees A. De; Voo, Rob Van der

doi:10.1038/226933a0

Cited by 58 publications

(14 citation statements)

References 3 publications

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“…Radiometric dates on Tertiary volcanic rocks along the CBte d'Azur, France (26.2 million years), in western Sardiania (23*8& 1 .O million years), and in the central Valencia Trough (22&2.0 million years) are further supportive evidence for an early Miocene (Aquitanian Stage) episode of fragmentation, rifting, and extension within the Balearic Basin initiating the counter-clockwise rotation of the Sardinia and Corsica microplates away from Europe (Zijderveld, De Jong & Van der Voo, 1970;Alvarez, 1973Alvarez, ,1974Westphal et al, 1973;Cherchi, Maxia & Ulzega, 1974;Alvarez & Cocozza, 1974;Wezel, 1974b;Cocozza & Schafer, 1974).…”

Section: Reasonableness Of the Age-depth Relationshipmentioning

confidence: 85%

Quantitative evaluation of the depth of the western Mediterranean before, during and after the Late Miocene salinity crisis

Ryan¹

1976

Sedimentology

138

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Quantitative geophysical calculations which take into consideration the isostatic loading of sediment overburden, the overlying water cover, and the thermal cooling history of the continental edge, and its adjacent oceanic lithosphere, demonstrate the foundering of the margins of the western Mediterranean had already commenced in the Aquitanian stage of the early Miocene. The calculations are based on magnitudes and rates of sediment accumulation observed along a profile of three commercial boreholes into the subsurface of the continental shelf of southern France. By the time of the late Miocene (Messinian) salinity crisis, the depth of the seafloor within the Balearic basin exceeded 2.5 km. Sea‐level fluctuations induced by evaporitic draw‐down permitted the exposure of large tracts of the former submerged continental margins to subaerial processes. The measured magnitude of sediment removal by erosion and channel incision near the outer shelf of the modern Gulf of Lion surpasses 1 km. The subsidence history of this shelf platform south of France provides new evidence that the continental lithosphere behaves as if it is rigidly coupled to its oceanic counterpart commencing with the initial phase of the pull‐apart. No major vertical fault displacements have subsequently offset their overlying crustal layers. The sedimentary shaping and construction of the margin seaward of the Rhône delta resulted in a pronounced shelf edge migration and slope progradation during the pre‐salinity crisis Miocene. It has taken 5 million years of predominant upbuilding to establish a new equilibrium profile similar in cross‐section to the precrisis depositional surfaces created by outbuilding.

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Section: Reasonableness Of the Age-depth Relationshipmentioning

confidence: 85%

Quantitative evaluation of the depth of the western Mediterranean before, during and after the Late Miocene salinity crisis

Ryan¹

1976

Sedimentology

138

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“…During the Late Carboniferous -Late Permian, there are palaeomagnetic evidences from Sardinia that support the presence of differential block rotation (Zijderveld et al, 1970;Edel et al, 1981;Edel, 2000;Moser et al, 2005;Emmer et al, 2005, Aubele et al 2014). These movements have been generally related to a crustal-scale shear zone between Laurasia and Gondwana during late-to post-Variscan times (Arthaud and Matte, 1977b;Edel, 2000), an event which would probably be related to the transformation of Pagea B into Pangea A (Muttoni et al, 2003).…”

Section: Possible Effects Of Permian Shearing and Rotationsmentioning

confidence: 88%

Structure and tectonic setting of the SE Sardinia mafic dyke swarm. Insights for the stress state during magma emplacement in the upper crust

Martínez-Poza

Druguet

2016

Journal of Geodynamics

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“…At that time the more internal units (Ligurian oceanic domain), which were incorporated in the Apennine chain during the Late Cretaceous, formed a double verging orogenic wedge, related to northeastward subduction of the Adriatic‐Ionian lithosphere. The proposed position of the Corsica‐Sardinia block, located adjacent to southern France, was originally suggested by Argand [] and has been later confirmed by a large amount of geological, geophysical, and paleomagnetic evidences [ De Jong and Manzoni , ; De Jong et al ., ; Zijderveld et al ., ; Alvarez , ; Alvarez et al ., ; De Jong et al ., ; Westphal et al ., ; Montigny et al ., ; Burrus , ; Edel , ; Vigliotti et al ., ; Speranza et al ., ; Gattacceca et al ., ].…”

Section: Discussionmentioning

confidence: 99%

Paleomagnetic evidence for a post‐Eocene 90° CCW rotation of internal Apennine units: A linkage with Corsica‐Sardinia rotation?

et al. 2014

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We report on an extensive paleomagnetic study (36 sites) of the Tuscan Nappe succession from the Northern Apennines Arc, aimed to reconstruct the tectonic evolution of the internal sector of this chain. We analyzed Eocene pelagic foreland ramp deposits (Scaglia Toscana Formation) and Oligocene-lower Miocene siliciclastic turbidites (Macigno and Falterona Formations). Paleomagnetic results show that the internal sector of the Northern Apennines underwent large counterclockwise (CCW) rotations with respect to the Adria-Africa foreland. A decrease in the rotation magnitude was observed from the southern to the northern sector of the arc (from 91 to 36°). This trend is opposite to that observed in the more external units of Northern Apennines and demonstrates that the oroclinal bending model, which has been proposed for the external units of the chain, is not appropriate to explain the evolution of the internal sector of the arc. On the basis of the observed paleomagnetic pattern, we propose a new tectonic model in which the Tuscan and Falterona-Cervarola units in the southern area were first rotated CCW along with the Corsica-Sardinia block during its lower Miocene rotational drifting and were later involved in the main phases of rotational emplacement and translation toward the outermost sector (Umbria domain), thus yielding the final curved shape of the Northern Apennines chain. Data from this study represent the first paleomagnetic evidence of the influence of the Corsica-Sardinia CCW rotation in the Apennines orogenic wedge deformation, in the general framework of the geodynamic evolution of the Central Mediterranean subduction system.

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Rotation of Sardinia: Palaeomagnetic Evidence from Permian Rocks

Cited by 58 publications

References 3 publications

Quantitative evaluation of the depth of the western Mediterranean before, during and after the Late Miocene salinity crisis

Quantitative evaluation of the depth of the western Mediterranean before, during and after the Late Miocene salinity crisis

Structure and tectonic setting of the SE Sardinia mafic dyke swarm. Insights for the stress state during magma emplacement in the upper crust

Paleomagnetic evidence for a post‐Eocene 90° CCW rotation of internal Apennine units: A linkage with Corsica‐Sardinia rotation?

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