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    Wyświetlanie 1-3 z 3
    Tytuł:
    Geomorphological map of the surroundings of Cortina d’Ampezzo (Dolomites, Italy)
    Autorzy:
    Pasuto, A.
    Soldati, M.
    Powiązania:
    https://bibliotekanauki.pl/articles/294613.pdf
    Data publikacji:
    2007
    Wydawca:
    Stowarzyszenie Geomorfologów Polskich
    Tematy:
    geomorphological map of the surroundings
    Cortina d’Ampezzo
    Dolomites
    Italy
    Źródło:
    Landform Analysis; 2007, 5; 63-65
    1429-799X
    Pojawia się w:
    Landform Analysis
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Palaeoenvironmental evolution of the Southern Alps across the Faraoni Level equivalent : new data from the Trento Plateau (Upper Hauterivian, Dolomites, N. Italy)
    Autorzy:
    Lukeneder, A.
    Grunet, P.
    Powiązania:
    https://bibliotekanauki.pl/articles/139422.pdf
    Data publikacji:
    2013
    Wydawca:
    Polska Akademia Nauk. Czytelnia Czasopism PAN
    Tematy:
    kreda dolna
    Dolomity
    hoteryw
    płaskowyż
    Włochy
    Dolomites
    Faraoni oceanic anoxic event
    Hauterivian
    Italy
    Lower Cretaceous
    Trento Plateau
    Opis:
    New stratigraphic and palaeoenvironmental data are presented for the northeastern part of the Trento Plateau (Puez area, Southern Alps, Italy). The studied section corresponds to the upper Hauterivian Balearites balearis and "Pseudothurmannia ohmi" ammonite zones and normal palaeomagnetic chron upper M5. A c. 30-cm-thick bed is identified as the equivalent of the Faraoni Level, based on its position within the Pseudothurmannia mortilleti Subzone, the composition of its ammonite fauna and the peak of a minor positive trend in the [delta]13 Cbulk record. Microfacies and geochemical proxies compare well with those of the southeastern part of the Trento Plateau and indicate palaeoceanographic continuity along the eastern margin of the plateau. The abundances of radiolarians and nannoconids suggest a turnover in the trophic structure from eutrophic conditions around the Faraoni Level equivalent to oligotrophic conditions. Low organic matter and sulphur content and frequent bioturbation indicate a well-oxygenated environment. Ammonite diversity and life-habitat groups document the influence of sea level on the plateau: while epi- and mesopelagic ammonites occur commonly during sea-level highstands, all life-habitat groups become reduced during a sea-level lowstand in the Spathicrioceras seitzi and P. ohmi subzones. The Faraoni event is heralded by a faunal turnover expressed as the diversification of epipelagic ammonites. Palaeoenvironmental conditions along the eastern margin of the Trento Plateau during the Faraoni event contrast with those of the organic-rich black shales in the west. A re-evaluation of the depositional model based on the new results suggests a general water depth of 300-500 m for the plateau. The severe reduction of mesopelagic ammonites during the sea-level lowstand indicates a shallowing towards the epi-/mesopelagic boundary. During the Faraoni event, the eastern areas of the Trento Plateau were located at the upper limit of the oxygen-minimum layer and were thus only occasionally affected by oxygen depletion, whereas the western areas were located well within the upper part of the oxygen-depleted layer.
    Źródło:
    Acta Geologica Polonica; 2013, 63, 1; 89-104
    0001-5709
    Pojawia się w:
    Acta Geologica Polonica
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    The ferns of the Late Ladinian, Middle Triassic flora from Monte Agnello, Dolomites, Italy
    Autorzy:
    Kustatscher, E.
    Dellantonio, E.
    Van Konijnenburg-van Cittert, J.H.A.
    Powiązania:
    https://bibliotekanauki.pl/articles/21744.pdf
    Data publikacji:
    2014
    Wydawca:
    Polska Akademia Nauk. Instytut Paleobiologii PAN
    Tematy:
    fern
    Dipteridaceae
    Matoniaceae
    Phlebopteris
    Cladophlebis
    Chiropteris
    Thaumatopteris
    plant fossil
    fossil
    paleobotany
    Late Ladinian
    Middle Triassic
    flora
    Dolomites
    Italy
    Opis:
    Several fern remains are described from the para-autochthonous early late Ladinian flora of the Monte Agnello (Dolomites, N-Italy). The plants are preserved in subaerially deposited pyroclastic layers. Some ferns, known already from the Anisian and Ladinian of this area, are confirmed (Neuropteridium elegans), but several taxa are described for the first time (Phlebopteris fiemmensis sp. nov., Cladophlebis ladinica sp. nov., Chiropteris monteagnellii sp. nov.). Cladophlebis sp. and some indeterminable fern remains cannot yet be assigned to any family. Phlebopteris fiemmensis is now the oldest formally established species in the genus. The fern family Dipteridaceae (Thaumatopteris sp. and some fragments probably belonging to the Dipteridaceae because of their venation) has not been recorded previously from European sediments as old as the Ladinian. Although stratigraphically attributed to the late Ladinian, the flora is markedly distinct from other Ladinian floras of the Dolomites and the Germanic Basin. The flora from Monte Agnello shows a higher diversity in ferns than coeval floras from this area although characteristic elements of the Ladinian of the Dolomites such as Anomopteris and Gordonopteris are missing. The new flora misses also the Marattiales (e.g., Danaeopsis, Asterotheca) and other elements such as Sphenopteris schoenleiniana, typical for the Ladinian of the Germanic Basin.
    Źródło:
    Acta Palaeontologica Polonica; 2014, 59, 3
    0567-7920
    Pojawia się w:
    Acta Palaeontologica Polonica
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
      Wyświetlanie 1-3 z 3

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