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Paleotectonic and paleoceanographic controls on microbial-serpulids communities in the Norian-Rhaetian carbonates of Italy: a synthesis.
No full textIn Colacicchi R., Parisi G. & Zamparelli V. (eds.), Bioevents and Integrate Stratigraphy in the Triassic and Jurassic of Italy. Con il contributo di BERRA F., BONI M., CLAPS M., CLIMACO A., COZZI A., PODDA F., PONTON M. & TROMBETTA L
The Middle-Upper Triassic of the San Donato Unit Auct. (Northern Calabria: stratigraphy, paleogeography and tectonic implications)
No full textThe Middle-Upper Triassic of the San Donato Unit Auct. (Northern Calabria: stratigraphy, paleogeography and tectonic implications)
No full textDiscosiphonella minima Senowbari-Daryan & Link and Solenolmia? parva n. sp. ("Sphinctozoa", Porifera) from the UPPER tRIASSIC (Norian) of the Southern Appennines (northern Calabria/Italy)
No full textTwo hypercalcified sphinctozoan sponges are described from several localities of dolomitic Norian reefs of northern Calabria (southern Italy). Solenolmia? parva n. sp. occurs as an extremely abundant, albeit local, component in peculiar bioconstructions dominated by serpulids and microbialitic crusts. Discosiphonella minima Senowbari-Daryan & Link, previously recognized only in the type locality of Turkey, has been now found also as a minor component in association with other typical "Dachstein" reef biota, such as corals, sponges, microbial crusts and fragments of "microproblematica". Solenolmia? parva assemblage represents the primary framebuilder of small build-ups which developed on the margins of restricted intraplatform basins. The Discosiphonella minima assemblages were found as resedimented blocks along the slope of intraplatform anoxic basins. The distribution of the different reefal assemblages of Northern Calabria can be related to the paleogeographic position of northern Calabria with respect to the evolution of Triassic crustal extension in western Mediterranean
Paleotectonic and paleoceanographic controls on microbial-serpulids communities in the Norian-Rhaetian carbonates of Italy: a synthesis.
No full textPalaeopelagos, Spec. Publ.n.
Platform margins, microbial/serpulids bioconstructions and slope-to-basin sediments in the Upper Triassic of the "Verbicaro Unit" (Lucania and Calabria, Southern Italy).
No full textMicrobial-serpulids buildups in Norian-Rhaetian of the Western Mediterranean area: ecological response of marginal communities to stressed environments.
No full textThe Middle-Upper Triassic of the San Donato Unit Auct. (Northern Calabria: stratigraphy, paleogeography and tectonic implications)
Full text linkIn this paper are presented stratigraphic and sedimentological data on the carbonate successions occurring in the Cozzo del Pellegrino massif (Cosenza), generally considered as pertaining to the metamorphic San Donato Unit. The successions start with thick phyllites and intercalated carbonate lenses containing Anisian-lower Ladinian algae. To the phyllites follows the informally defined calcari formation, locally occurring also as its lateral equivalent. The calcari formation consists of two members, the first of which (Piano del Minatore Mbr.)consists of black, often marly limestones, showing nodular and bioturbated textures, with a scarce and banal fauna represented by ostracods, gastropods and bivalves. Algal mounds, with porostromata and crinoids are locally intercalated in these facies. In the upper part of the formation the black limestones pass laterally to a reef complex (Monte Caramolo Mbr.) of Ladino-Carnian age, consisting mainly of boundstones with sponges and biogenic crusts, as well as of fore-reef breccias. These lithotypes have been interpreted as deposited on a carbonate ramp evolving to a restricted, poorly oxygenated lagoonal area, bordered by bioconstructed margins. In the lower Carnian a carbonate-marly horizon, containing traces of evaporites, whose thickness is decreasing toward the east, allows a lithostratigraphic correlation betweenmost of the studied successions. The calcari formation is followed by the Scifarello formation, mainly outcropping in the eastern parts of the studied area. It consists generally of tidal dolomites with some tempestites deposited on an shallow open shelf, followed by dolomites and laminated, often marly, dolomitic limestones, deposited in a subtidal, restricted environment. On the basis of foraminifers and bivalves data, the upper part of the Scifarello formation has been ascribed to the upper Carnian-Norian. Moreover, a strong tectonic activity of Lower Norian age is evidenced by the presence of mass-flows and sedimentary dikes in the more easterly areas of the massif. The general paleoenvironmental evolution, in the period spanning between Anisian and Early Norian, can be envisaged firstly in a carbonate sedimentation on a wide shelf, grading toward the east to deeper, possibly basinal areas, whose location was controlled by the Ladinian and/or Norian synsedimentary tectonics. This shelf was bordered on the west by a peri-continental area, with silicoclastic to evaporitic deposits, better represented in the Cetraro area. Finally, the Norian dolomites pertaining to the Verbicaro Unit, usually considered as have been thrusted onto rhe Triassic carbonates of the San Donato Unit, have been often observed to occur in normal stratigraphical superposition over the latter. Therefore, also considering the ambiguous evidence presented in the literature on the Jurassic-Miocenic evolution of the San Donato Unit AUCT, we interpret the Norian Verbicaro dolomites as being the most natural evolution of the Anisian-Lower Norian San Donato lithotypes. It follows that for a really valid paleogeographic reconstruction a complete redefinition of the tectonic units in the whole area is needed
Azimuth-to-Frequency Mapping in Airborne SAR Data Corrupted by Uncompensated Motion Errors
No full textaccounted for via standard two-step motion compensation (MOCO) algorithm followed by the Precise Topography-and Aperture-dependent (PTA) procedure proposed some years ago. In this letter, we show how the azimuth-to-frequency mapping used by the PTA approach should be modified to fully account for the presence of uncompensated motion errors
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