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Excavation

  • Valle della Chiesa
  • Costo
  • .
  • Italy
  • Veneto
  • Province of Verona
  • Roncà

Tools

Credits

  • The Italian Database is the result of a collaboration between:

    MIBAC (Ministero per i Beni e le Attività Culturali - Direzione Generale per i Beni Archeologici),

    ICCD (Istituto Centrale per il Catalogo e la Documentazione) and

    AIAC (Associazione Internazionale di Archeologia Classica).

  • AIAC_logo logo

Summary (English)

  • The 2011 excavation area was situated a few hundred metres from that of 2010 (area A). The area was identified following a series of surveys undertaken in previous months in collaboration with the Associazione Paleontologica Val Nera di Roncà. The excavation had a front of circa 5 m and a depth of between 1 and 2 m.
    Work began with the cleaning of the excavation area and the removal of a substantial amount of detrital material. The initial stratigraphy of the section was updated continually as the work proceeded and new elements were uncovered. The position of the layers: direction of dip 53°- slope 7°.

    From bottom to top the stratigraphic sequence was as follows:
    Layer 0: palaeo-soil constituted by reddish clay and nodules of calcium carbonate (caliche). Fragments of marine organisms present. Thickness: >60 cm.
    Layer 1: palaeo-soil of reddish clay. Fragments of marine organisms present (mainly ostrea). Thickness: 40 cm.
    Interpretation of layers 0 and 1: alteration (mechanical breakdown + chemical alteration) of what was originally a marine deposit occurring once the deposit was in subaerial conditions.
    Layer 2: yellowish/greyish massive limestone containing abundant nummulites. At the base these were deposited in great quantity along the length of the layer, at the roof they were fewer in number and scattered. Thickness: 65 cm.

    Interpretation: transgression.
    Layer 3: greyish massive limestone containing nummulites and micro-foraminifers (not abundant) and abundant molluscs (bivalves and gastropods). Presence of bio-erosions in the lower part. Thickness: 50 cm.
    Layer 4: yellowish massive limestone with abundant nummulites. Thickness: 45 cm (up to ground level).

    Rock samples were taken from the excavation area. A preliminary analysis of the palaeontological content showed that almost all finds were molluscs (gastropods and bivalves) and foraminifers (Nummulites brongniarti). Overall, 164 palaeontological finds were recovered, almost all from layer 3.

  • Roberto Zorzin - Museo Civico di Storia Naturale di Verona 

Director

Team

  • Michele Mattioli - Università degli Studi di Urbino “Carlo Bo”, Istituto di Scienze della Terra
  • Paolo Mietto - Università degli Studi di Padova, Dipartimento di Scienze di Geologia, Paletnologia e Geofisica
  • Viviana Frisone - Museo Civico G. Zannato di Montecchio Maggiore (VI)
  • C.A. Accorsi - Università di Modena e Reggio Emilia, Dipartimento del Museo di Paleobiologia e dell’Orto Botanico

Research Body

  • Museo Paleontologico del Comune di Roncà

Funding Body

  • Comune di Roncà

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