This paper sheds light on the structural architecture and tectonic evolution of the Campania-Lucania segment of the Southern Apennines orogen through an integrated analysis of mostly unpublished and partly published (CROP-04 line) seismic reflection profiles, exploratory well logs and geologic-structural relations among the lithostratigraphic units of this region. The pre-orogenic Mesozoic-Neogene carbonate platform, margin-slope and basinal units that compose the upper orogenic level (Apennines fold and thrust belt) were detached from their basement during Miocene thrusting and form a heterogenous multilayer that was thrust above the Apulian foreland platform. The Apulian Platform itself was involved in Pliocene thick-skinned thrusting that controlled the style and localization of Quaternary transtension and extension. The velocity data from sonic logs, the well stratigraphy, and the seismic reflection facies were integrated through an accurate well-to-seismic tie, allowing the building of a specific velocity model for the time-to-depth conversion. We identified different seismic units with distinctive reflections attributes, which were assigned to the lithostratigraphic units logged in the wells. Our analysis documents the stratigraphic-structural arrangement of the thin-skinned thrusts sheets (Liguride Basin, Apennine Platform and Lagonegro-Molise Basin units) that form the Apennines fold and thrust belt. These units show strong lateral thickness changes because of both the original depositional environments and the non-coaxial deformation stages. In contrast, the underlying Apulian Platform is characterized by a regional anticlinorium (∼30–50 km wavelength) that, based on our new reconstruction, extends further west than hitherto known. The anticlinorium exhibits shorter-wavelength (<10 km) anticlines limited by N- to NE-verging thrust ramps, whose high dip (∼45°) suggests they root in the crystalline basement. Our work provides a sound link between surface and subsurface structural setting and an improvement of the geometry of the Apulian Platform, with important implications for structural and seismotectonic models of the region.

中文翻译：

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坎帕尼亚-卢卡尼亚弧（意大利南亚平宁山脉）的构造结构和构造演化：地震反射剖面、井数据和构造地质分析的约束

本文通过对大部分未发表和部分发表（CROP-04 线）地震反射剖面、勘探测井和地质构造关系的综合分析，揭示了南亚平宁造山带坎帕尼亚-卢卡尼亚段的结构构造和构造演化。属于该地区的岩石地层单元。造山前中生代-新近纪碳酸盐台地、边缘斜坡和构成上造山平面（亚平宁山脉褶皱和冲断带）的盆地单元在中新世逆冲过程中从其基底脱离，形成非均质多层，逆冲到阿普利亚前陆台地上方。阿普利亚地台本身参与了上新世厚皮逆冲作用，控制了第四纪张拉运动的类型和定位。来自声波测井、井地层和地震反射相的速度数据通过精确的井-地震联系进行整合，从而可以建立用于时深转换的特定速度模型。我们确定了具有独特反射属性的不同地震单元，并将其分配给井中记录的岩石地层单元。我们的分析记录了形成亚平宁褶皱和冲断带的薄皮逆冲板块（利古赖德盆地、亚平宁地台和拉戈内格罗-莫利塞盆地单元）的地层结构排列。由于原始沉积环境和非同轴变形阶段，这些单元表现出强烈的横向厚度变化。相比之下，下面的阿普利亚台地的特点是区域性反斜层（~30-50公里波长），根据我们的新重建，它比迄今为止已知的向西延伸得更远。背斜表现出较短波长（<10公里）的背斜，受到北向至北东边缘逆冲斜坡的限制，其高倾角（~45°）表明它们扎根于结晶基底。我们的工作提供了地表和地下构造环境之间的良好联系，并改进了阿普利亚平台的几何形状，对该地区的构造和地震构造模型具有重要意义。