54 research outputs found
The Scaglia Toscana Formation of the Monti del Chianti: new lithostratigraphic and biostratigraphic data
The Scaglia Toscana Formation (Scisti Policromi Auctt.) is one of the most investigated formations of the Tuscan Nappe. The formation is widely exposed in the Chianti Mounts and despite the number of studies in this area, some aspects remain poorly known and debated.In this paper new litho- and bio-stratigraphic data from eight key-sections distributed over the entire area are provided and discussed in order to clarify the stratigraphic relationships among different lithostratigraphic members, as well as the depositional ages of each member. The formation was deposited in the Cretaceous-Oligo-cene time interval and it can be subdivided into five lithostratigraphic members: i) the âArgilliti di Brolioâ (wine-red shales with sporadic siliceous calcilutites and rare interbedded cherts); ii) the âMarne del Sugameâ (red and pink marls, calcareous marls and marly limestones
with interbedded calcarenitic beds and ruditic lens-shaped bodies including calcareous-siliceous clasts); iii) the âArgilliti di Cintoiaâ (grey-green to black shales, locally with manganese-rich siliceous calcilutites and cherts); iv) the âCalcareniti di Montegrossiâ (thin beds of calcilutites and calcarenites with varicoloured shaly-marly interbeds); and v) the âArgilliti e Calcareniti di Duddaâ (alternating thin beds of calcilutites and calcarenites with varicoloured shaly-marly interbeds). These members were deposited in a marine environment and have been interpreted as deposited in a turbiditic system, in which shaly and calcareous turbiditic members have been attributed to a basin plain below the CCD, whereas the marls and marly limestones of the Marne del Sugame Member were deposited in a slope/ramp environment above or close to the CCD. Furthermore, the combination of these new
data with structural informations coming from the literature allowed a better paleogeographic reconstruction of the paleobasin. In order to better explain these data, the paper is accompanied by two geological maps realized in the past but never distributed. The two geological maps, at the scale of 1:25,000, cover the whole area from the Cintoia (south of Florence) to the San GusmĂš (north of Siena) villages
Studia Lichenologica in Italy. I. New records of red-listed species
We present new data concerning lichen species of the Italian flora and confirm 36 national redlisted species
Notulae to the Italian flora of algae, bryophytes, fungi and lichens: 6
In this contribution, new data concerning bryophytes, fungi, and lichens of the Italian flora are presented. It includes new records and confirmations for the bryophyte genera Barbula, Fissidens, Gymnostomum, Jungermannia, Riccia, and Scapania, the fungal genera Hyalopsora and Urocystis and the lichen genera Arthothelium, Chaenotheca, Lepraria, Lobaria, Miriquidica, Parmelia, Rinodina, Solenopsora, Thelopsis and Xanthoparmelia
Notulae to the Italian flora of algae, bryophytes, fungi and lichens: 12
In this contribution, new data concerning bryophytes, fungi and lichens of the Italian flora are presented. It includes new records, confirmations or exclusions for the bryophyte genera Acaulon, Campylopus, En-tosthodon, Homomallium, Pseudohygrohypnum, and Thuidium, the fungal genera Entoloma, Cortinarius, Mycenella, Oxyporus, and Psathyrella and the lichen genera Anaptychia, Athallia, Baeomyces, Bagliettoa, Calicium, Nephroma, Pectenia, Phaeophyscia, Polyblastia, Protoparmeliopsis, Pyrenula, Ramalina, and San-guineodiscus
Notulae to the Italian flora of algae, bryophytes, fungi and lichens: 9
In this contribution, new data concerning bryophytes, fungi, and lichens of the Italian flora are presented.
It includes new records and confirmations for the bryophyte genera Encalypta, Grimmia, and Riccia, for the fungal genera Hericium, Inocybe, Inocutis, Pluteus, and Russula, and for the lichen genera Bryoria, Farnoldia, Hypocenomyce, Lecania, Paracollema, Peltigera, Sarcogyne, and Teloschistes
Rise and Fall of a Multi-sheet Intrusive Complex, Elba Island, Italy
Elba Island intrusive complex: multisheet laccoliths, sheeted pluton, mafic dyke swarm. Laccolith magma fed from dykes and emplaced in crustal discontinuities (traps). Pluton growth by downward stacking of three magma pulses. Laccoliths and plutons: different outcomes of similar processes in different conditions. Emplacement of excess magma in a short time led to massive gravity slide
Notulae to the Italian flora of algae, bryophytes, fungi and lichens: 12
In this contribution, new data concerning bryophytes, fungi and lichens of the Italian flora are presented. It includes new records, confirmations or exclusions for the bryophyte genera Acaulon, Campylopus, Entosthodon, Homomallium, Pseudohygrohypnum, and Thuidium, the fungal genera Entoloma, Cortinarius, Mycenella, Oxyporus, and Psathyrella and the lichen genera Anaptychia, Athallia, Baeomyces, Bagliettoa, Calicium, Nephroma, Pectenia, Phaeophyscia, Polyblastia, Protoparmeliopsis, Pyrenula, Ramalina, and Sanguineodiscus
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