1,721,258 research outputs found
Southern Alps and Dinarides: overview
No full textA geological overview of the Southern Alps and Dinarids is provided
CRUSTOSE CORALLINE ALGAL PAVEMENTS FROM LATE EOCENE COLLI BERICI OF NORTHERN ITALY
Full text linkThe Eocene from the Prealpine region records the first phase of the crustose coralline algae flourishing in the Cenozoic. These algae are very frequent in the Marne di Priabona Formation (Late Eocene). This palaeoecological research involves ourcrop at Barbarano Vicentino(Vicenza) in the Colli Berici which is well known for its Paleogene stratigraphy. The coralline unit consists of a floatstone bank 6 m thick with rhodoliths and laminar crusts; it lies between macroforaminifer dominated limestone (Middle Eocene) and coral-algal massive limestone (earliest Oligocene). Lithothamnion, Sporolithon, Mesophyllum, and some Lithoporella and Spongites have been recognized. Bryozoans, large foraminifera, bivalves, echinoids, serpulids, benthic and rare planktic forams also occur. The large foraminifera are represented by Nummulites, Discocyclina, Operculina, Asterocyclina, Spiroclypeus, Gypsina, Pellatispira, Biplanispira.The coralline association is dominated by Lithothamnion. A lower and an upper facies have been recognized. Small rhodoliths made up of thin crusts around a large core, or several encrusting stages characterise the lower part of the unit; big rhodoliths (4-10 cm in size) with a complex inner structure and several thin delicate laminar crusts occur in the upper part; groups of laminar crusts, parallel to the depositional surface, are frequent too. Bioclastic lenses rich in large foraminifera and bryozoans, without rhodoliths, occur in the lower part of the unit. The Priabonian algal community built a "Crustose Pavement" on the open shelf (shallow circalittoral) below the wave base at 50-100 m in depth, occasionally influenced by storms. The morphology of the thalli suggests a decrease in hydrodynamic energy or an increase in depth from the bottom to the top of the unit
The Lukas Hottinger's monography: Paleogene larger rotaliid foraminifera from the western and central Neotethys
No full textWOLF Meeting (2013) - Workgroup On Larger Foraminifera. 6th International WOLF Meeting. 4th - 6th October 201
Facial development of coralline red algae during the Late Eocene (Calcare di Nago, Southern Trento, Northern Italy)
No full textFacies analysis of Upper Eocenee shallow-water coralline red algal successions
The 5th IGCP 393 meeting: Shallow water benthic communities at the Middle-Upper Eocene boundary. Southern and north-eastern Italy, Slovenia, Croatia, Hungary, 18-31 July, 2000
No full textReport regarding the 5th IGCP 393 meeting entitled: "Shallow water benthic communities at the Middle-Upper Eocene boundary. Southern and north-eastern Italy, Slovenia, Croatia, Hungary", held in Ferrara on 18th-31st of July, 2000
Stratigraphy and palaeoecology of Lower Jurassic shallow water carbonates: the Trento Platform. A field-course for students.
No full textA join field-course with University students of the University of Ferrara (Degree in Natural Sciences) and Univerity of Tuebingen (Germany, degree in Earth Sciences) has been held in Tonezza del Cimone (VI) for introducing the classes into the sedimentological and palaeontological aspects of the Lower Jurassic shallow water carbonates in the Trento Platform. A 5-days field-course which is the continuation of the past 4 meetings. Prof. J.H. Nebelsick has been the responsible for the University of Tuebingen
Reassessment of Solenomeris afonensis Maslov, 1956 (Foraminifera): formerly considered a coralline red alga.
No full textSolenomeris afonensis is herein re-assessed. This species was considered by Maslov (1956) as a coralline alga. The present assessment describes shell structures which characterise encrusting foraminifera belonging to the group of the acervulinids
Vegetative anatomy and palaeoecology of Polystrata alba (PFENDER) DENIZOT, 1968 (Cryptonemiales, Peyssonneliaceae) from the upper Eocene of northern Italy
No full textThe vegetative anatomy of Polystrata alba (PFENDER) DENIZOT has important analogies with the anatomical structures of the non-geniculate corallines. The thallus is organized in a bilateral-radial manner and consists of a single eccentric row of primigenous filaments composed of tall cells. Postigenous filaments arise plumosely both upward and downward from the outer surface of the primigenous filaments; the dorsal ones bend progressively upward to become perpendicular to the surface of the thallus. During the Upper Eocene, P. alba (PFENDER) DENIZOT developed on the uppermost outer and mid-ramp of the western margin of the Lessini Shelf (Nago; southern Alps), growing either as crusts or rhodoliths, in association with non-geniculate corallines
- …
