Search results for "Olocene"

showing 4 items of 334 documents

First Evidence of Contourite Drifts in the North-Western Sicilian Active Continental Margin (Southern Tyrrhenian Sea)

2021

We present the results of an integrated geomorphological and seismo-stratigraphic study based on high resolution marine data acquired in the north-western Sicilian continental margin. We document for the first time five contourite drifts (marked as EM1a, EM2b, EM2, EM3a, and EM3b), located in the continental slope at depths between ca. 400 and 1500 m. EM1a,b have been interpreted as elongated mounded drifts. EM1a,b are ca. 3 km long, 1.3 km wide, and have a maximum thickness of 36 m in their center that thins northwards, while EM1b is smaller with a thickness up to 24 m. They are internally characterized by mounded seismic packages dominated by continuous and parallel reflectors. EM2 is loc…

seismic reflection dataSettore GEO/02 - Geologia Stratigrafica E SedimentologicaSettore GEO/03 - Geologia StrutturaleSettore GEO/04 - Geografia Fisica E GeomorfologiaNaval architecture. Shipbuilding. Marine engineeringVM1-989Ocean EngineeringGC1-1581OceanographyPaleontologyMediterranean seaContinental marginAggradationMediterranean Seacontinental slopemoatHoloceneWater Science and TechnologyCivil and Structural Engineeringgeographygeography.geographical_feature_categoryContinental shelfcontouritesContouriteSeafloor spreadinglanguage.human_languagelanguagebottom currentsSiciliancontourites; bottom currents; continental slope; moat; seismic reflection data; Mediterranean SeaGeology
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Arheoloģija Baltijā 21. gs. sākumā: jaunākie pētījumi, aktuālās diskusijas un mūsdienu izaicinājumi: referātu kopsavilkumi, 2022. gada 18. februārī L…

2022

Jau divas desmitgades Latvijas Universitātes (LU) starptautiskās zinātniskās konferences ietvaros katru otro gadu norisinās Arheoloģijas sekcija, ko rīko LU Vēstures un filozofijas fakultāte. Pirmoreiz šāda sekcija tika rīkota LU 61. zinātniskajā konferencē 2003. gada 10. februārī. Turpinot iesākto tradīciju, arī 2022. gada 18. februārī LU 80. starptautiskās konferences ietvaros Vēstures un filozofijas fakultātes Vēstures un arheoloģijas nodaļa organizēja arheoloģijas problemātikai veltītu sekciju, kurā tika aplūkotas daudzveidīgās un aktuālās mūsdienu arheoloģijas attīstības tendences Latvijā un Eiropā. Daļa konferences referātu pievērsās dabaszinātņu un tās pētniecisko metožu lomai arheol…

senās Rīdzenes upes krastidzelzs laikmeta kopapbedījumiRotas - 13.-15. gadsimts RīgaĶīšezera (Bulduru) pilskalnsakmens laikmeta apdzīvotības pētniecībaarheoloģija:HUMANITIES and RELIGION::History and philosophy subjects::Archaeology subjects [Research Subject Categories]Hallstatt period burials in SloveniaĀraišu arheoloģiskās ainavas rekonstrukcijaagrā bronzas laikmeta keramikabronzas riņķichanging landscape from the Late Glacial to the Late Holocenekulta vietas dzelzs laikmetāLatvijas Universitātes Mākslas kabineta monētu kolekcijasuņu paleopataloģija
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Holocene Spatiotemporal Redox Variations in the Southern Baltic Sea

2021

Low oxygen conditions in the modern Baltic Sea are exacerbated by human activities; however, anoxic conditions also prevailed naturally over the Holocene. Few studies have characterized the specific paleoredox conditions (manganous, ferruginous, euxinic) and their frequency in southern Baltic sub-basins during these ancient events. Here, we apply a suite of isotope systems (Fe, Mo, S) and associated elemental proxies (e.g., Fe speciation, Mn) to specifically define water column redox regimes through the Baltic Holocene in a sill-proximal to sill-distal transect (Lille Belt, Bornholm Basin, Landsort Deep) using samples collected during the Integrated Ocean Drilling Program Expedition 347. At…

sulfur isotopes010504 meteorology & atmospheric sciencesBaltic SeaScienceGeochemistryStructural basinengineering.material010502 geochemistry & geophysics01 natural sciencesWater columnSillHolocene0105 earth and related environmental sciencesgeographypaleoredoxgeography.geographical_feature_categorybiologyQLittorinairon isotopesbiology.organism_classificationAnoxic watersDiagenesismolybdenum isotopesengineeringGeneral Earth and Planetary SciencesPyritediagenesisGeologyFrontiers in Earth Science
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Holocene sea level change in Malta

2013

A multidisciplinary approach has been applied to study sea level changes along the coast of Malta using data collected from underwater archaeological remains. The elevation of archaeological markers have been compared with predicted sea level curves providing new bodies of evidence that outline the vertical tectonic behaviour of this region, allowing estimation of the relative sea level changes that occurred in this area of the Mediterranean since the Bronze Age. During the Roman Age, sea level was at −1.36 ± 0.1 m, while in the Midde Age it was at −0.56 ± 0.2 m, in agreement with previous estimations for the Mediterranean region. Data indicate that Malta was tectonically stable during the …

vertical movementMediterranean climateClimatic changes -- MaltaSea level -- MaltaSettore GEO/02 - Geologia Stratigrafica E SedimentologicaPleistoceneMaltaSettore GEO/03 - Geologia StrutturaleSettore GEO/04 - Geografia Fisica E GeomorfologiaElevationLast Glacial Maximumrelative sea level changePaleoecology -- Maltarelative sea level change; Late Holocene; MaltaLate HoloceneTectonicsPaleontologyPalynology -- MaltaBronze Agesealevel changeHoloceneGeologySea levelEarth-Surface Processes
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