Birth and early evolution of a Jurassic escarpment: Monte Kumeta Western Sicily

Stefano, Pietro Di; Galácz, András; Mallarino, Gianni; Mindszenty, Andrea; Vörös, Attila

doi:10.1007/bf02668084

Cited by 52 publications

(43 citation statements)

References 15 publications

Supporting

Mentioning

Contrasting

Unclassified

Order By: Relevance

“…They are represented by shallowwater carbonate deposits pertaining to the Upper Triassic-Eocene Panormide succession. This succession is characterized by Bahamian-type facies, with periodic subaerial exposure and continental sedimentation (Basilone, 2015;Di Stefano et al, 2002).…”

Section: Geological Settingmentioning

confidence: 99%

See 1 more Smart Citation

Geology of Monte Gallo (Palermo Mts, NW Sicily)

Basilone

Maggio

2016

Journal of Maps

View full text Add to dashboard Cite

The promontory of Monte Gallo (Palermo, NW Sicily) is a spectacular site where Upper TriassicEocene carbonate platform rocks and Quaternary continental to marine deposits are well exposed. A Mesozoic-Paleogene rock succession allows the potential visitor to easily detect the features and the evolution of the Panormide carbonate platform, a shallow-water paleogeographic domain of the Southern Tethyan margin. Quaternary deposits, as well many landforms, enable the visitor to directly identify the interplay between climate changes, tectonics and fluctuations of marine level that occurred during the Quaternary Period. A detailed geological map (1:15,000 mapping scale) is presented, accompanied by a stratigraphic correlation of logged sections and morpho-stratigraphic and tectonic schemes of the area, aimed at highlighting the geological heritage of Monte Gallo in support of the establishment of a Geosite. The Geological Map and relevant explanatory notes should be used as cartographic support and as a field trip guide for possible geological itineraries. ARTICLE HISTORY

show abstract

Section: Geological Settingmentioning

confidence: 99%

“…The occurrence of Jurassic bauxites in the shallowwater carbonate succession of Monte Gallo has offered an excellent site for the reconstruction of the MesozoicPaleogene Panormide carbonate platform geological history (Di Stefano, Mallarino, Mindszenty, & Nicchitta, 2002;Ferla, Censi, & Meli, 2002 and references thereinafter).…”

Section: Introductionmentioning

confidence: 99%

Geology of Monte Gallo (Palermo Mts, NW Sicily)

Basilone

Maggio

2016

Journal of Maps

View full text Add to dashboard Cite

show abstract

“…Di Stefano and Mindszenty 2000). The Early Jurassic extensional tectonic phase that lasted from the middle Hettangian to the late Pliensbachian is recognized across the entire southTethyan passive continental margin (Winterer and Bosellini 1981;Sarti et al 1992;Bertotti et al 1993;Di Stefano and Mindszenty 2000;Baumgartner et al 2001;Clari and Masetti 2002;Di Stefano et al 2002).…”

Section: Pliensbachian: Demise Of the Julian Carbonate Platform And Fmentioning

confidence: 99%

The Jurassic Prehodavci Formation of the Julian Alps: easternmost outcrops of Rosso Ammonitico in the Southern Alps (NW Slovenia)

Šmuc

Rožič

2010

Swiss J Geosci

View full text Add to dashboard Cite

“…The Early Jurassic rifting produced a complex pattern of structural highs and lows (seamounts and basins) developing distinct palaeoenvironments Jenkyns, 1974, 2009). On submarine topographic highs, long periods of exposure of the sea floor to oxygenated seawater favoured metal precipitation in form of Mn and Fe (hydr) oxides on any available substrate, potentially promoting conditions conducive to formation of a hardground with Fe-Mn nodules (Jenkyns, 1970;Di Stefano and Mindszenty, 2000;Di Stefano et al, 2002), as seen at the base of the Monte Mangart section (Fig. 2C).…”

Section: Origin Of Fe-mn Nodulesmentioning

confidence: 99%

“…However, Mn-rich (Mn 2+ ) carbonates stratigraphically associated with Jurassic black shales have been recognized in basinal pelagic deposits from Austria, Germany, Switzerland, Slovakia, Italy, and Hungary (Bellanca et al, 1999;Corbin et al, 2000;Ebli et al, 1998;Jenkyns, 1988;Jenkyns et al, 1991;Polgári et al, 1991Polgári et al, , 2004Rantitsch et al, 2003;Vetö et al, 1997). Ferromanganese oxyhydroxide crusts and nodules (Mn 4+ ) formed on topographic highs (seamounts) in relatively shallow waters are also characteristic of the Jurassic Tethys (Cronan et al, 1991;Di Stefano et al, 2002;Jenkyns, 1970Jenkyns, , 1971Jenkyns, , 1977. Several authors (i.e.…”

Section: Introductionmentioning

confidence: 99%

Petrography and high-resolution geochemical records of Lower Jurassic manganese-rich deposits from Monte Mangart, Julian Alps

Sabatino¹,

Neri²,

Bellanca³

et al. 2011

Palaeogeography, Palaeoclimatology, Palaeoecology

View full text Add to dashboard Cite

Deposits with unusually high Mn contents sampled at Monte Mangart in the Julian Alps include organic-rich marlstone and black shale with interbedded manganoan and siliceous limestone, which were deposited during the early Toarcian Oceanic Anoxic Event. Mn enrichment during that period has been related to global sea-level change coincident with increasing subsidence rate. The formation of Fe-Mn nodules, marking a hardground at the base of the Monte Mangart section, seems to be triggered by release of Mn from remote hydrothermal vents into a region of relatively elevated submarine topography where oxidizing conditions prevailed. However, very high Mn contents in carbonate phases above the hardground imply an additional diagenetic source of this element in the lower part of this section. The whole stratigraphic sequence (ca 30 m) displays a transition from Mn-rich (up to 8.8%) sediments, in the lower part, to Mn-poor (less than 1.8%) sediments in the middle and upper parts. The drastic decrease in Mn content's up-section is accompanied by a clear decrease in the mean size of pyrite framboids, indicating more intense anoxia/euxinia in the water column. In the presence of Mn 2+ , conditions of high alkalinity induced precipitation of Mn carbonates during early diagenetic processes. Negative δ 13C carb values coincident with high Mn contents indicate involvement of organic matter in the mineralization process. The striking similarity of Ce/Ce* and Mn profiles demonstrates that, consistent with redox-chemistry of Mn and Ce under anoxic conditions, Ce 3+ and Mn 2+ were mobilized and released into pore water where precipitation of Mn carbonates occurred.

show abstract

Birth and early evolution of a Jurassic escarpment: Monte Kumeta Western Sicily

Cited by 52 publications

References 15 publications

Geology of Monte Gallo (Palermo Mts, NW Sicily)

Geology of Monte Gallo (Palermo Mts, NW Sicily)

The Jurassic Prehodavci Formation of the Julian Alps: easternmost outcrops of Rosso Ammonitico in the Southern Alps (NW Slovenia)

Petrography and high-resolution geochemical records of Lower Jurassic manganese-rich deposits from Monte Mangart, Julian Alps

Contact Info

Product

Resources

About