Tectonic relationships between the Paleozoic basement and the Mesozoic cover succession in the northern Dora-Maira Massif (Susa Valley, Western Alps)
The northernmost sector of the Dora-Maira Massif is a key area for studying the role of basement-cover detachment zones as markers for understanding the multistage tectonic evolution of orogenic belts. The 1:5,000 scale geological map highlights the tectonic relationships between the Paleozoic basem...
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| Main Authors: | , , , |
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| Format: | Article |
| Language: | English |
| Published: |
Taylor & Francis Group
2025-12-01
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| Series: | Journal of Maps |
| Subjects: | |
| Online Access: | https://www.tandfonline.com/doi/10.1080/17445647.2025.2451785 |
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| Summary: | The northernmost sector of the Dora-Maira Massif is a key area for studying the role of basement-cover detachment zones as markers for understanding the multistage tectonic evolution of orogenic belts. The 1:5,000 scale geological map highlights the tectonic relationships between the Paleozoic basement and Mesozoic cover successions, which are separated by the Bussoleno Detachment Shear Zone, representing the basement-cover interface, and are tectonically overlain by the ophiolite-bearing Foresto Shear Zone. The Dora-Maira successions and these shear zones were deformed during four main phases (i.e. D1, D2, D3 and D4), with the – early tectonic setting largely established during the subduction-related D1 phase. Prior to the Alpine polyphase deformation, the basement-cover interface likely originated as a weak horizon within the Early Triassic, localizing deformation and forming the primary detachment zone. |
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| ISSN: | 1744-5647 |