Search results for " Sedimentolog"
showing 10 items of 358 documents
Mineralogical and chemical variability of fluvial sediments 2. Suspended-load silt (Ganga–Brahmaputra, Bangladesh)
2011
Sediments carried in suspension represent a fundamental part of fluvial transport. Nonetheless, largely because of technical problems, they have been hitherto widely neglected in provenance studies. In order to determine with maximum possible precision the mineralogy of suspended load collected in vertical profiles from water surface to channel bottom of Rivers Ganga and Brahmaputra, we combined Raman spectroscopy with traditional heavy-mineral and X-ray diffraction analyses, carried out separately on low-density and dense fractions of all significant size classes in each sample (multiple-window approach). Suspended load resulted to be a ternary mixture of dominant silt enriched in phyllosi…
Seismostratigraphic modeling using constrained HVSR Data
2017
An application of HVSR inversion is presented in order to verify the effectiveness of this technique for purposes of reconstruction of the buried geological setting where stratigraphic constraints are available. Specifically, the reconstruction of the stratigraphy in the studied area has been obtained by a seismic-stratigraphic three-dimensional modeling. This allowed for geophysical and geognostic data derived from surveys carried out during this study, as well as previously by the municipality of Palermo.
Seismic Characterization by Inversion of HVSR Data to Improve Geological Modelling
2014
SUMMARY An application of HVSR inversion is presented in order to verify the effectiveness of this technique for purposes of geological reconstruction of the subsoil finalized to studies of seismic microzonation of heavily urbanized areas, where few stratigraphic and geophysical constraints are available and most of the information are derived from the geological maps. In such cases the uncertainty of the results is is enhanced by doubts on the nature of the H/V peaks, not always caused by stratigraphic discontinuities, and to the subjective choices done especially in the step of signal preprocessing. The investigated area (Altavilla Milicia, Sicily) includes the town center and the adjacen…
NEW INSIGHTS INTO THE CRUSTAL STRUCTURES OF SOUTH-EASTERN SICILY FROM REPROCESSING OF SEISMIC REFLECTION DATA IN THE FRAME OF THE SIRIPRO PROJECT
2009
COMBINED INTERPRETATION OF ACOUSTIC VELOCITY AND RESISTIVITY MODELS: THE SIRIPRO PROJECT CASE
2009
TOWARDS THE INTEGRATION OF MAGNETOTELLURIC WITH GEOLOGICAL SEISMIC AND GRAVITY DATA WITHIN THE SIRIPRO PROJECT
2009
SIRIPRO PROJECT: FIELD AND STRATIGRAPHICAL-STRUCTURAL DATA FROM N-S CENTRAL SICILY TRANSECT
2009
Strutture deformative sindeposizionali nelle calcareniti Pleistoceniche del settore orientale dell'Isola di Favignana (Sicilia, Italia)
2013
Seismogenic rotational slumps and translational glides in pelagic deep-water carbonates. Upper Tithonian-Berriasian of Southern Tethyan margin (W Sic…
2017
Abstract Soft-sediment deformation structures (SSDSs), which reflect sediment mobilization processes, are helpful to identify punctual events of paleoenvironmental stresses. In the upper Tithonian-Berriasian calpionellid pelagic limestone of the Lattimusa Fm. outcropping in the Barracu section (W Sicily), paleoenvironmental restoration reveals the occurrence of a deep-water flat basin, characterised by undeformed planar bedding, laterally passing to a gentle slope where the deformed horizons alternate with undeformed beds. Here, two types of gravity slides have been differentiated on the basis of different kinds of SSDSs, brittle deformation, involved lithofacies, geometry and morphology. T…
Evidence of the Zanclean megaflood in the eastern Mediterranean Basin
2018
A. Micallef et. al.