... anticline, where the upper part of the Scaglia Bianca Formation and the interbedded Bonarelli Level crop out. An ammonite, preserved as a bidimensional trace, has been found within one black shale bed which characterizes the level. The lack of diagnostic elements does not allow a precise taxonomic...

... Globigerinacea Invertebrata Italy lithostratigraphy Livello Bonarelli Bed Marches Italy Mesozoic microfossils mudstone paleoenvironment Protista radiolarite Rotaliina Rotalipora Scaglia Bianca Formation sedimentary petrology sedimentary rocks sedimentation Southern Europe stratigraphic...

.... The package occurs near the top of the uppermost Albian-basal Turonian Scisti a Fucoidi and Scaglia Bianca Formation of the Umbria-Marche Basin in the grayish Member W4 ( Coccioni, 1996 ). It is sandwiched between two distinct cherty layers, and is considered to be an entirely pelagic limestone interval...

...) and Marne a Fucoidi formations (d–f) showing stable characteristic remanent magnetization up to 580 °C or 670 °C; Scaglia Bianca (g–i) and Scaglia Rossa (j–l) formations. Dark, medium and light grey indicate the characteristic remanent magnetization, the intermediate temperature component and the viscous...

...Fig. 4.  Carbonate carbon- and oxygen-isotope stratigraphy and biostratigraphy of the Scaglia Bianca and Scaglia Rossa formations in the Gubbio S2 core. PF, planktonic foraminiferal; NF, nannofossil. Zones NC10 and NC14 from the zonation of Roth (1978) ; NC11* from that of Bralower et al...