A revision of late Palaeozoic tectonics recorded in Tuscany, Calabria and Corsica is here presented. We propose that, in Tuscany, upper Carboniferous-Permian shallow-marine to continental sedimentary basins, characterized by unconformities and abrupt changes in sedimentary facies, coal-measures, red fanglomerate deposits and felsic magmatism, may be related with a transtensional setting where upper-crustal splay faults are linked with a mid-crustal shear zone. The remnants of the latter can be found in the deep-well logs of Pontremoli and Larderello-Travale in northern and southern Tuscany respectively. In Calabria (Sila, Serre and Aspromonte), a continuous pre-Mesozoic crustal section is exposed, where the lower-crustal portion mainly includes granulites and migmatitic paragneisses, together with subordinate marbles and metabasites. The mid-crustal section, up to 13 km-thick, includes granitoids, tonalitic to granitic in composition, emplaced between 306 and 295 Ma. They were progressively deformed during retrograde extensional shearing, with a final magmatic activity, between 295 ± 1 and 277 ± 1 Ma, when shallower dykes were emplaced in a transtensional regime. The section is completed by an upper crustal portion, mainly formed by a Palaeozoic sedimentary succession deformed as a low-grade fold and thrust belt, and locally overlaying medium-grade paragneiss units. As a whole, these features are reminiscent of the nappe zone domains of the Sardinia Variscan Orogen. In Corsica, besides the well-known effusive and intrusive Permian magmatism of the “Autochthonous” domain, the Alpine Santa Lucia Nappe exposes a kilometer-scale portion of the Permian lower to mid-crust, exhibiting many similarities to the Ivrea Zone. The distinct Mafic and Granitic complexes characterizing this crustal domain are juxtaposed through an oblique-slip shear zone named Santa Lucia Shear Zone. Structural and petrological data witness the interaction between magmatism, metamorphism and retrograde shearing during Permian, in a temperature range of c. 800–400 °C. We frame the outlined paleotectonic domains within a regional-scale, strain–partitioned, tectonic setting controlled by a first-order transcurrent/transtensional fault network that includes a westernmost fault (Santa Lucia Fault) and an easternmost one (East Tuscan Fault), with intervening crustal domains affected by extensional to transtensional deformation. As a whole, our revision allows new suggestions for a better understanding of the tectonic framework and evolution of the Central Mediterranean during the late Palaeozoic.

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地中海中部晚古生代构造学：重新评估

这里介绍了在托斯卡纳，卡拉布里亚和可西嘉岛记录的晚古生代构造的修订版。我们建议，在托斯卡纳，上石炭统-二叠纪浅海至大陆沉积盆地，其特征为不整合面和沉积相，煤系，红色扇状沉积和长岩质岩浆作用的突变，可能与上张性的张性环境有关。地壳扩张断裂与中地壳剪切带有关。后者的残留物分别在托斯卡纳北部和南部的蓬特雷莫利和拉德雷洛-特拉瓦勒的深井测井中发现。在卡拉布里亚（Sila，Serre和Aspromonte），一个连续的中生代前地壳部分暴露在外，其中下地壳部分主要包括花岗石和多生的帕拉尼戈斯，以及下级大理石和变质岩。地壳中部，最厚达13公里，包括花岗岩，成分从色调到花岗岩，介于306至295 Ma之间。它们在逆行拉伸剪切过程中逐渐变形，最终岩浆活动在295±1至277±1 Ma之间，而在跨张拉状态下放置了较浅的堤坝时。该断面由上地壳部分完成，该地壳部分主要由古生界沉积演替形成，该古生代沉积演替变形为低品位的褶皱和逆冲带，并局部覆盖了中品位的石级构造。总体而言，这些特征使人联想到撒丁岛瓦里斯康造山带的推覆带区域。在科西嘉（Corsica），除了著名的“ Autochthonous”域的喷发性和侵入性二叠纪岩浆外，Alpine Santa Lucia Nappe覆盖了二叠纪低至中地壳的一千米范围，与Ivrea区域有很多相似之处。通过称为Santa Lucia剪切带的斜滑剪切带将并列表征该地壳区域的独特的镁铁质和花岗岩复合体。结构和岩石学资料证明了在温度范围为c的二叠纪期间岩浆作用，变质作用和逆切变之间的相互作用。800–400°C。我们在由一阶跨流/张性断层网络（包括最西端的断层（圣卢西亚断层）和最东端的断层（东托斯卡纳断层））控制的区域尺度，应变划分的构造环境中，勾勒出概述的古构造域。中间地壳区域受拉伸变形至拉伸变形的影响。整体而言