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Geology of the San Colombano hill, a Quaternary isolated tectonic relief in the Po Plain of Lombardy (Northern Italy)

Author

Listed:
  • Chiara Zuffetti
  • Riccardo Bersezio
  • Daniele Contini
  • Maria Rose Petrizzo

Abstract

The 1:10,000 geological map of the San Colombano hill covers 60 km2 in the Po Plain, south of Milan. The new and the historical surface geological data-sets are managed by a GeoDB aiming to contribute to re-interpret the Quaternary evolution at the Po Plain-Northern Apennine border. On the hill, the Calabrian shallow marine San Colombano Fm. unconformably overlies the truncated deeper-marine Miocene formations, up-thrusted by the external fronts of the Apennine Emilian Arc during Mio-Pliocene. Late Pleistocene alluvial units rest in unconformity above the marine succession both on the uplifted hilltop and on the surrounding plain. Fault-related offset of Late Pleistocene units, stratigraphic and morpho-structural evidences (facets, relic surfaces and drainage patterns), document the Quaternary tectonic history. Early to Middle Pleistocene ongoing thrust-folding at the northernmost buried reaches of the Emilian Arc was followed by Latest Pleistocene-Holocene transtension, possibly relating to the NNE striking Pavia-Casteggio lateral ramp.

Suggested Citation

  • Chiara Zuffetti & Riccardo Bersezio & Daniele Contini & Maria Rose Petrizzo, 2018. "Geology of the San Colombano hill, a Quaternary isolated tectonic relief in the Po Plain of Lombardy (Northern Italy)," Journal of Maps, Taylor & Francis Journals, vol. 14(2), pages 199-211, November.
    • Handle: RePEc:taf:tjomxx:v:14:y:2018:i:2:p:199-211
    DOI: 10.1080/17445647.2018.1443166
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