Conserving geological heritage is pivotal in improving the fruition of geological resources. Preserving significant geological outcrops is even compelling when the site concerned quickly undergoes natural processes of geological and environmental evolution. An efficient and not expensive tool to ward and communicate geological features is represented by photogrammetry and 3D models, with the possibility to create large-shared database. A paradigmatic case is represented by the Jurassic Agolla outcrop (Umbria-Marche Apennines, Italy). The Umbria-Marche Basin displays a well-known Jurassic stratigraphy, controlled by an Early Jurassic extensional phase, which caused the fragmentation of a huge carbonate platform (“Calcare Massiccio”, Hettangian). Tectonics produced the drowning of the benthic factory and a complex submarine paleo-topography characterized by structural highs and lows (with consequent thickness and facies variations of the syn- and post-rift deposits). The pre-rift “Calcare Massiccio” was exposed along the horst-block margins forming morphological escarpments affected by episodic failures. The resulting rock-fall deposits (paleobreccia), topographically higher with respect to the basin floor, could represent preferential sites to host condensed facies (epi-breccia deposits) before being definitively sealed by the basin-fill deposits. The studied outcrop is a paleobreccia made of markedly angular “Calcare Massiccio” blocks (> 1 m longer axis). The boulders are draped by fossil-rich epi-breccia pelagites belonging to the “Bugarone” Group (late Kimmeridgian in age), in turn covered by the “Calcari a Saccocoma e Aptici” Fm. passing upward to the “Maiolica” Fm (late Tithonian). Taking into account the uniqueness of such outcrops and their importance in reconstructing the basin architecture, 3D models were performed. In these models, the sedimentological and paleontological details are faithfully reproduced, as well as the stratigraphic relationships between different litostratigraphic units are emphasized. The obtained model can be used to objectively convey to the scientific community raw data used for inferences and geological reconstructions. A shared database (in which to upload the obtained interactive models) could represents a fundamental tool for communication and exchange of punctual geological information, providing to all users the possibility to analyse the ‘digital outcrop’ from any perspective or angulation in a three-dimensional space. In conclusion, 3D photogrammetry proved to be an effective and powerful tool in preserving, fairly and over time, information with regional or global significance.

Preserving and comunicating unique depositional geometries through photogrammetric techniques: the Agolla case study (Umbria-Marche Apennines) / Cipriani A., 1; 2, ; Citton, Paolo; 2, ; Romano, Marco; 2, ; Fabbi, Simone; 2, *. - ELETTRONICO. - 1:(2015), pp. 127-127. (Intervento presentato al convegno 31th IAS Meeting of Sedimentology tenutosi a Krakow nel 22-25 Giugno 2015).

Preserving and comunicating unique depositional geometries through photogrammetric techniques: the Agolla case study (Umbria-Marche Apennines)

CITTON, PAOLO;ROMANO, MARCO;FABBI, SIMONE;
2015

Abstract

Conserving geological heritage is pivotal in improving the fruition of geological resources. Preserving significant geological outcrops is even compelling when the site concerned quickly undergoes natural processes of geological and environmental evolution. An efficient and not expensive tool to ward and communicate geological features is represented by photogrammetry and 3D models, with the possibility to create large-shared database. A paradigmatic case is represented by the Jurassic Agolla outcrop (Umbria-Marche Apennines, Italy). The Umbria-Marche Basin displays a well-known Jurassic stratigraphy, controlled by an Early Jurassic extensional phase, which caused the fragmentation of a huge carbonate platform (“Calcare Massiccio”, Hettangian). Tectonics produced the drowning of the benthic factory and a complex submarine paleo-topography characterized by structural highs and lows (with consequent thickness and facies variations of the syn- and post-rift deposits). The pre-rift “Calcare Massiccio” was exposed along the horst-block margins forming morphological escarpments affected by episodic failures. The resulting rock-fall deposits (paleobreccia), topographically higher with respect to the basin floor, could represent preferential sites to host condensed facies (epi-breccia deposits) before being definitively sealed by the basin-fill deposits. The studied outcrop is a paleobreccia made of markedly angular “Calcare Massiccio” blocks (> 1 m longer axis). The boulders are draped by fossil-rich epi-breccia pelagites belonging to the “Bugarone” Group (late Kimmeridgian in age), in turn covered by the “Calcari a Saccocoma e Aptici” Fm. passing upward to the “Maiolica” Fm (late Tithonian). Taking into account the uniqueness of such outcrops and their importance in reconstructing the basin architecture, 3D models were performed. In these models, the sedimentological and paleontological details are faithfully reproduced, as well as the stratigraphic relationships between different litostratigraphic units are emphasized. The obtained model can be used to objectively convey to the scientific community raw data used for inferences and geological reconstructions. A shared database (in which to upload the obtained interactive models) could represents a fundamental tool for communication and exchange of punctual geological information, providing to all users the possibility to analyse the ‘digital outcrop’ from any perspective or angulation in a three-dimensional space. In conclusion, 3D photogrammetry proved to be an effective and powerful tool in preserving, fairly and over time, information with regional or global significance.
2015
31th IAS Meeting of Sedimentology
04 Pubblicazione in atti di convegno::04d Abstract in atti di convegno
Preserving and comunicating unique depositional geometries through photogrammetric techniques: the Agolla case study (Umbria-Marche Apennines) / Cipriani A., 1; 2, ; Citton, Paolo; 2, ; Romano, Marco; 2, ; Fabbi, Simone; 2, *. - ELETTRONICO. - 1:(2015), pp. 127-127. (Intervento presentato al convegno 31th IAS Meeting of Sedimentology tenutosi a Krakow nel 22-25 Giugno 2015).
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Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/11573/792393
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