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NARROW
GeoRef Subject
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all geography including DSDP/ODP Sites and Legs
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Europe
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Alps
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Eastern Alps
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Dinaric Alps (1)
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Central Europe
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Austria
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Lower Austria (3)
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Molasse Basin (1)
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Vienna Basin (3)
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Pannonian Basin (3)
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Southern Europe
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Croatia (1)
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Dalmatia (1)
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Dinaric Alps (1)
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Romania
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Apuseni Mountains (1)
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Serbia (1)
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fossils
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Vertebrata (1)
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Invertebrata
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Arthropoda
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Mandibulata
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Cnidaria
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Grund Formation (1)
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upper Miocene
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Pannonian (1)
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igneous rocks
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igneous rocks
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volcanic rocks
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pyroclastics
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tuff (3)
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trachyandesites (1)
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minerals
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silicates
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orthosilicates
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nesosilicates
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illite (2)
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Primary terms
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absolute age (1)
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Cenozoic
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Tertiary
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Neogene
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Miocene
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lower Miocene (1)
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middle Miocene
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Badenian (2)
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Grund Formation (1)
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Langhian (1)
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upper Miocene
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Pannonian (1)
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Chordata
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Vertebrata (1)
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data processing (1)
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diagenesis (1)
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Europe
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Alps
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Eastern Alps
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Dinaric Alps (1)
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Central Europe
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Austria
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Lower Austria (3)
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Molasse Basin (1)
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Vienna Basin (3)
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Pannonian Basin (3)
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Southern Europe
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Croatia (1)
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Dalmatia (1)
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Dinaric Alps (1)
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Romania
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Apuseni Mountains (1)
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Serbia (1)
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geochemistry (1)
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igneous rocks
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volcanic rocks
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pyroclastics
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tuff (3)
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trachyandesites (1)
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Invertebrata
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Arthropoda
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Mandibulata
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Crustacea
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Ostracoda (1)
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Cnidaria
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Anthozoa (1)
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Mollusca
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Bivalvia
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Ostreoidea
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Ostreidae
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Crassostrea (1)
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Gastropoda (1)
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Protista
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Foraminifera (1)
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ocean floors (1)
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plate tectonics (1)
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reefs (1)
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sea-level changes (1)
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sedimentary rocks
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clastic rocks (1)
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sedimentary rocks
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sedimentary rocks
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clastic rocks (1)
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shell beds (1)
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siliciclastics (1)
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sediments
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U–Pb zircon age and mineralogy of the St Georgen halloysite tuff shed light on the timing of the middle Badenian (mid-Langhian) transgression, ash dispersal and palaeoenvironmental conditions in the southern Vienna Basin, Austria
Miocene tuffs from the Dinarides and Eastern Alps as proxies of the Pannonian Basin lithosphere dynamics and tropospheric circulation patterns in Central Europe
AGE AND MODE OF THE MIDDLE MIOCENE MARINE FLOODING OF THE PANNONIAN BASIN—CONSTRAINTS FROM CENTRAL SERBIA
Abstract The Cretaceous and Palaeogene sediments of the basins in Central Asia include the remnants of the easternmost extent of a vast shallow epicontinental sea, which extended across the Eurasian continent before it retreated westwards and eventually isolated as the Paratethys Sea. To improve understanding of its long-term palaeogeographical evolution, we complement the well-constrained chronological framework of the Tarim Basin in China with stratigraphic records of the sea retreat from the Fergana Basin and the Alai Valley Basin in southern Kyrgyzstan and the Afghan–Tajik Basin in SW Tajikistan. By lithostratigraphic analyses and identification of bivalve assemblages, this study establishes for the first time a clear and detailed regional correlation of Palaeogene marine strata across Central Asia, showing that the basins share a similar palaeogeographical evolution characterized by a long-term stepwise retreat punctuated by short-term shallow-marine incursions. Our correlation shows that the last two marine incursions recognized in the Tarim Basin can be traced westwards. The permanent disappearance of the sea from Central Asia probably occurred with limited diachroneity in the late Eocene, before the isolation of the Paratethys Sea, shifting the easternmost margin of the sea hundreds of kilometres westwards and probably significantly reducing moisture supply to the Asian interior.
Taxonomic and numerical sufficiency in depth- and salinity-controlled marine paleocommunities
High-resolution 3D surface modeling of a fossil oyster reef
Magmatic provenance and diagenesis of Miocene tuffs from the Dinaride Lake System (the Sinj Basin, Croatia)
Long-term ecosystem stability in an Early Miocene estuary
Abstract Changes in molluscan diversity across the 3rd order sequence boundary from the Lower to the Middle Miocene of the Paratethys were evaluated in the context of environmental bias. Taken at face value, quantitative data from nearshore and sublittoral shell beds suggest a transition from low-diversity Karpatian (Upper Burdigalian) to highly diverse Badenian (Langhian and Lower Serravallian) assemblages, but environmental affiliation of samples reveals a strong facies shift across the sequence boundary. Ordination methods show that benthic assemblages of the two stages, including 4 biozones and four 3rd order depositional sequences over less than four million years, are developed along the same depth-related environmental gradient. Almost all samples are from highstand systems tracts, but Karpatian faunas are mostly from nearshore settings, and Badenian faunas are strongly dominated by sublittoral assemblages. This study emphasizes the importance of highly resolved stratigraphic and palaeoenvironmental frameworks for deciphering palaeodiversity patterns at regional scales and highlights the effort required to reach the asymptote of the collector's curve. Abundance data facilitate the recognition of ecological changes in regional biota and it is suggested that in second and higher order sequences the facies covered within systems tracts will drive observed diversity patterns.
Oligocene–Miocene basin evolution in SE Anatolia, Turkey: Constraints on the closure of the eastern Tethys gateway
Abstract The Oligocene–Miocene was a time characterized by major climate changes as well as changing plate configurations. The Middle Miocene Climate Transition (17 to 11 Ma) may even have been triggered by a plate tectonic event: the closure of the eastern Tethys gateway, the marine connection between the Mediterranean and Indian Ocean. To address this idea, we focus on the evolution of Oligocene and Miocene foreland basins in the southernmost part of Turkey, the most likely candidates to have formed this gateway. In addition, we take the geodynamic evolution of the Arabian–Eurasian collision into account. The Muş and Elazığ basins, located to the north of the Bitlis–Zagros suture zone, were most likely connected during the Oligocene. The deepening of both basins is biostratigraphically dated by us to occur during the Rupelian (Early Oligocene). Deep marine conditions (between 350 and 750 m) prevailed until the Chattian (Late Oligocene), when the basins shoaled rapidly to subtidal/intertidal environment in tropical to subtropical conditions, as indicated by the macrofossil assemblages. We conclude that the emergence of this basin during the Chattian severely restricted the marine connection between an eastern (Indian Ocean) and western (Mediterranean) marine domain. If a connection persisted it was likely located south of the Bitlis–Zagros suture zone. The Kahramanmaraş basin, located on the northern Arabian promontory south of the Bitlis–Zagros suture zone, was a foreland basin during the Middle and Late Miocene, possibly linked to the Hatay basin to the west and the Lice basin to the east. Our data indicates that this foreland basin experienced shallow marine conditions during the Langhian, followed by a rapid deepening during Langhian/Serravallian and prevailing deep marine conditions (between 350 and 750 m) until the early Tortonian. We have dated the youngest sediments underneath a subduction-related thrust at c . 11 Ma and suggest that this corresponds to the end of underthrusting in the Kahramanmaraş region, i.e. the end of subduction of Arabia. This age coincides in time with the onset of eastern Anatolian volcanism, uplift of the East Anatolian Accretionary Complex, and the onset of the North and East Anatolian Fault Zones accommodating westward escape tectonics of Anatolia. After c . 11 Ma, the foreland basin south of the Bitlis formed not (or no longer) a deep marine connection along the northern margin of Arabia between the Mediterranean Sea and the Indian Ocean. We finally conclude that a causal link between gateway closure and global climate change to a cooler mode, recorded in the Mi3b event (δ 18 O increase) dated at 13.82 Ma, cannot be supported.