DOLOMITES - Annexes 2-8 - Provincia di Udine

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NOMINATION OF THE DOLOMITES FOR INSCRIPTION ON THE WORLD NATURAL HERITAGE LIST UNESCO 28 prevalently of gray marly, silty and arenaceous limestones, with decimeter-thick layers of bioclastic calcarenites with bivalves, microgastropods and remnants of echinoderms. The finest lithotypes are often bioturbated, with limivorous animal burrows with centimeter-wide diameters. These mixed terrigenous-carbonate deposits document shelf facies primarily characterized by storm-driven wave control and only with slight evidence of tidal control. Stratigraphical setting of the Werfen Formation of the Dolomites: vertical scale greatly amplified. (Modified from Broglio Loriga et al., 1990). The Val Badia Member in some areas grades and others shows an uncomformity with the Cencenighe Member and to the San Lucano Member (Farabegoli et alii, 1977; Pisa et alii 1979). These two members are characterized by distinct lithologies (mainly carbonates in Cencenighe and prevalently terrigenous in San Lucano) of fairly uniform thickness between 140-150 m, of which the first 80-90 m belong to the Cencenighe Member. The first is characterized by dolomites and oolitic-bioclastic, sometimes arenaceous limestones, yellow or red in color, that form a thick metric and plurimetric sets with bi-directional cross-bedding and subordinate hummocky cross-bedding. These bodies are interpreted as shoals with prevalent tidal control. They alternate with gray bioturbated siltites and marlstones, sometimes fossiliferous, subtidal, and with dolomitic siltites and pelitic red flaser and lenticular bedding siltites, with inter and upper tidal mud-cracks. The San Lucano Member comprises red sandstones in decimeter- thick erosive-based lenticular strata, with horizontal and cross lamination, wave and current ripples, frequently amalgamated in metric sets; silty and marly siltites, pelites and dolomites, in various colors (yellow, gray, red, purple) with ripples, mud-cracks, and small teepees. In the upper-middle part of the member the terrigenous component is reduced and the light gray, bioturbated dolomites become dominant, containing more or less terrigenous sediments, sometimes fossiliferous, alternating with minor, multi-color teepee dolomitic siltites. In the Giudicarie area and in the Dolomiti di Brenta the Werfen Formation is replaced by the Servino Formation, in the end very similar and also made of dolomites, fine sandstones and multicolor siltites, dolomitic and oolithic limestones, proving the presence of a shallow water carbonate platform discontinuously affected by continental run-off. The Werfen Formation crops out widely in the entire eastern Southern Alps, with thickness that vary from approx. 250 m (or less, in highly structured areas) in Val d’Adige/Etschtal up to 500-600 m in
NOMINATION OF THE DOLOMITES FOR INSCRIPTION ON THE WORLD NATURAL HERITAGE LIST UNESCO 29 the Eastern Dolomites (Broglio Loriga et alii, 1983). The fossils in the Werfen Formation are dominated by mollusks (lamellibranchs and gastropods: the ammonoids only appear in the upper portion of the formation), ostracods, inarticulate brachiopods (lingulids). The remains of echinoderms (ophiuroids, echinids and crinoids) become significant only from the upper portion of the Campil Member upward. However, entire groups of marine organisms are absent, such as calcareous algae, corals, and articulate brachiopods across the Permian-Triassic extinction boundary. Opportunistic taxa such as the Eotriassic fauna are composed of an extremely limited number of short-lived, weakly-specialized taxa that did not need to maintain competitive advantages and were able to live in varying environmental conditions, thereby having a special, large, diffusion. The control on the Lower Triassic biostratigraphic succession is accurate. A few types of benthic mollusks, such as Claraia, Eumorphotis, Costatoria, Natiria, Turbo were chronostratigraphically shortlived but geographically widespread (Tethys and Arctic). In the upper portion of the Werfen Formation (Val Badia and Cencenighe Members) the ammonoids of the genus Theodolites and Dina rites are also fairly frequent, permitting good correlation with the Spathian terrains, both in Tethys and in South America. Eumorphotys and Unionites (Werfen Fm) Claraia Clarai (Werfen Fm)
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ANNEX 3 A3.1 LETTERS OF SUPPORT
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Systems: 1. Pelmo - Nuvolau 2. Marm
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visitors NOMINATION OF THE DOLOMITE
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others (malghe, alberghi, ristorant
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mountain cabins others (malghe, alb
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visitors footpath NOMINATION OF THE
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ANNEX 5 A5.1 PROTECTIVE DESIGNATION
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11. NOMINATION OF THE DOLOMITES FOR
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49. 50. 51. NOMINATION OF THE DOLOM
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ANNEX 7 A7.1 DVD (PHOTOGRAPHS) A7.2
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fauna NOMINATION OF THE DOLOMITES F
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ANNEX 8 A8.1 OTHER LOCAL AUTHORITIE
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DOLOMITES - Annexes 2-8 - Provincia di Udine

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