1,721,062 research outputs found
Carbonate channel network in the Miocene syn-rift Sardinia basins
No full textMurru M., Simone Lucia, Vigorito M. Carbonate channel network in the Miocene syn-rift Sardinia basins. In: Géologie Méditerranéenne. Tome 28, numéro 1-2, 2001. Anatomy of Carbonate Bodies / Anatomie des corps carbonates. International Meeting / Colloque international. Marseille, 9-12 mai 2001, France, sous la direction de Marc Floquet, Jérôme Hennuy et Jean-Pierre Masse. pp. 133-137
Miocene foramol carbonate systems as source area and depositional site of more or less reworked skeletal sediments: examples of open-shelf/margin/slope successions from the central-southern Apennines and Sardinia".
No full text1. Carannante G., Cherchi A., Schroeder R. and Simone L. . (2002). -. Capo Caccia (road cut): Urgonian, Muniera breccia snd associated bauxite at the base of the transgressive Late Cretaceous limestones. Rend. Soc. Paleont. Ital., 1, 329-332. 2. Carannante G., Cherchi A.and Simone L. . (2002). -. Capo Caccia (Scala del Cabirol):Late Cretaceous transgressive limestones on Urgonian facies Rend. Soc.Paleont. Ital., 1, 325-326. 3. Carannante G., Ruberti D. and Toscano F. (2002). -. Sedimentological and taphonomic characterization of rudist shell concentrations in upper Cretaceous limestones, Cilento area (Southern Italy). . North African Cretaceous rudist and coral formation and their contributions to carbonate platform development. Tunisi. (Abstracts) 56. 4. Cherchi A., Schroeder R. and Simone L. . (2002). -. Punta Malrepos: Urgonian transgressive limestones on Purbeckian facies. Rend. Soc. Paleont. Ital., 1, 315-319. 5. Simone L., Cherchi A. and Ibba A.. Monte Ti...
No full text1. Carannante G., Cherchi A., Schroeder R. and Simone L. . (2002). -. Capo Caccia (road cut): Urgonian, Muniera breccia snd associated bauxite at the base of the transgressive Late Cretaceous limestones. Rend. Soc. Paleont. Ital., 1, 329-332. 2. Carannante G., Cherchi A.and Simone L. . (2002). -. Capo Caccia (Scala del Cabirol):Late Cretaceous transgressive limestones on Urgonian facies Rend. Soc.Paleont. Ital., 1, 325-326. 3. Carannante G., Ruberti D. and Toscano F. (2002). -. Sedimentological and taphonomic characterization of rudist shell concentrations in upper Cretaceous limestones, Cilento area (Southern Italy). . North African Cretaceous rudist and coral formation and their contributions to carbonate platform development. Tunisi. (Abstracts) 56. 4. Cherchi A., Schroeder R. and Simone L. . (2002). -. Punta Malrepos: Urgonian transgressive limestones on Purbeckian facies. Rend. Soc. Paleont. Ital., 1, 315-319. 5. Simone L., Cherchi A. and Ibba A.. Monte Ti...
No full textMiocene foramol carbonate systems as source area and depositional site of more or less reworked skeletal sediments: examples of open-shelf/margin/slope successions from the central-southern Apennines and Sardinia".
No full textPery-Tethyan Cretaceous shallow-water carbonate systems: sedimentary patterns and lithofacies
No full textThe Cretaceous shallow water limestones cropping out both in the Italian Peninsula (Apenninic Chain) and Sardinia (Nurra Region) record significant events that affected the peri-Tethyan Region during Cretaceous times. These limestones have been investigated in order to highlight the regional variability in the related depositional systems, developed along opposing Tethyan continental margins. In spite of some remarkable differences as regards the areal partitioning of the main palaeoecologic controlling factors, several stratigraphic similarities and common sedimentological features are demonstrated. In the latest Jurassic-earliest Cretaceous time interval, significant regression events resulted in a widespread occurrence of non-marine, peritidal or restricted areas on the shallow peri-Tethyan carbonate platforms. Brackish, muddy deposits bearing ostracods and charophyte remains prevailed in the Sardinia carbonate depositional systems (north Tethyan margin), whereas schizohaline lagoonal/coastal lake systems, containing abundant radial-fibrous ooids, spread out largely along the southern Tethyan belt. The subsequent lower Cretaceous limestone documents the inception of shallow-water carbonate factories, via a progressive stratification of the water column, in both the marginal Tethyan subsiding areas. The transgressive Lower Cretaceous limestone piled up in carbonate systems, which grew supporting mainly chlorozoan assemblages and non-skeletal, grain-rich deposits. Nevertheless, several crisis moments in the growth of the carbonate factories have been recognized. Mid-Cretaceous tectonics and the consequent complex palaeotopography dramatically controlled the Albian-Turonian evolution of the analyzed areas. As a result of the complex interplay of tectonic, climatic and biothic factors, contrasting drowning episodes and continental exposures of different sectors of the peri-Tethyan carbonate platforms occurred. The carbonate factories experienced repeated crisis events during which cyanobacterial consortia, with variable contributions from rudists, largely prevailed in the shallow-water domains. The latest Turonian-Coniacian p.p. recovering of the carbonate factories might testify ameliorated environmental conditions. Afterwards, a shift toward foramol depositional systems occurred with sciophilous and mesotrophic condition-adapted assemblages flourishing in the new shallow-water domains. Rudist-bearing rhodalgal carbonate factories grew in the Sardinia domain. There, relatively cool and mesotrophic/tendentially eutrophic conditions became dominant in the water mass impinging on the marginal sectors of the carbonate system with demise of large sectors of the carbonate factory that underwent local drowning episodes in Santonian times. In contrast, the studied transgressive Apennine sequences show persisting evidence of microbial-related carbonate deposition in stressed peritidal domains. These latter rapidly evolved to rudist-dominated foramol carbonate factories whose ecological meaning is difficult to define due to the impossibility of an actualistc approach. The sustained production of rudist bioclasts partially damped the typical drowning tendency of the foramol open shelves. In spite of this, limited aggradation and/or retrogradation occurred and local starvation episodes characterized the neighbouring slopes and basins in Santonian-Campanian times. Unconformity surfaces generally end the Cretaceous sequences in the studied peri-Tethyan successions but, where present, the discontinuous outcrops of upper Campanian-Maastrichtian shallow-water limestone indicate that a very shallow paralic depositional setting with improved water conditions stimulated the flourishing of chlorozoan assemblages again
LATE CRETACEOUS FORAMOL CARBONATE FACTORIES AND BIOSTRATIGRAPHY OF THE NORTH-WESTERN SARDINIA, ITALY.
No full textIl Promontorio del Gargano: area di cruciale interesse nella geologia del Mediterraneo centrale. Field trip del 30 Maggio 2009.
No full textLa pubblicazione costituisce parte del Volume descrittivo della escursione scientifica tenuta sulla geologia e paleontologia delle successioni stratigrafiche affioranti sul Promontorio del Gargano (FG) in occasione della IX edizione delle Giornate di Paleontologia (2009) organizzata dalla Società Paleontologica Italian
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