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Volcanic ash, tuff, etc --- Volcans --- Cendres, tufs, etc --- Volcanic ash, tuff, etc. --- Pyroclastics --- Rocks, Volcanic --- Tephra --- Tuff --- Volcanic ejecta --- Volcanic rocks --- Igneous rocks --- Andosols

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Volcanic ash, tuff, etc --- Volcanoes --- Volcanism --- Volcans --- Volcanisme --- Cendres, tufs, etc --- 551.21 --- Volcanos --- Landforms --- Volcanology --- Volcanicity --- Vulcanism --- Geodynamics --- Pyroclastics --- Rocks, Volcanic --- Tephra --- Tuff --- Volcanic ejecta --- Volcanic rocks --- Igneous rocks --- Andosols --- Vulcanicity. Vulcanism. Volcanoes. Eruptive phenomena. Eruptions --- 551.21 Vulcanicity. Vulcanism. Volcanoes. Eruptive phenomena. Eruptions --- Volcanologie

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This book analyzes the Early Cretaceous volcanic processes in Misiones Province and in Sierra Chica de Córdoba (Argentina). The volcanism in Misiones is tholeiitic and belongs to the Parana Magmatic Province (PMP), which extends throughout South America. In contrast, the volcanism in Córdoba is geographically restricted and of alkaline nature, representing a potassic locality peripheral to the PMP. To understand the causes of and geodynamic processes involved in these volcanisms, a new 40Ar /39Ar of 129.6 ± 1 Ma of a trachyte from Sierra Chica de Córdoba is presented. This dating points out that the volcanism in Sierra Chica de Córdoba slightly postdates PMP lavas. Moreover, complementary geochemical analyses from Misiones Province are presented and compared with those from the whole PMP in order to characterize its source.

Geology - General --- Geology --- Earth & Environmental Sciences --- Volcanism --- Volcanic ash, tuff, etc. --- Geology, Stratigraphic --- Cretaceous Period --- Pyroclastics --- Rocks, Volcanic --- Tephra --- Tuff --- Volcanic ejecta --- Volcanic rocks --- Volcanicity --- Vulcanism --- Igneous rocks --- Andosols --- Geodynamics --- Volcanology --- Geology. --- Geochemistry. --- Historical Geology. --- Chemical composition of the earth --- Chemical geology --- Geological chemistry --- Geology, Chemical --- Chemistry --- Earth sciences --- Geognosy --- Geoscience --- Natural history --- Historical geology.

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One marker of the majesty of ancient Rome is its surviving architectural legacy, the stunning remains of which are scattered throughout the circum-Mediterranean landscape. Surprisingly, one truly remarkable aspect of this heritage remains relatively unknown. There exists beneath the waters of the Mediterranean the physical remnants of a vast maritime infrastructure that sustained and connected the western world's first global empire and economy. The key to this incredible accomplishment and to the survival of structures in the hostile environment of the sea for two thousand years was maritime

Concrete construction --- Marine engineering --- Technology --- Architecture, Roman. --- Geology --- Construction en béton --- Mécanique navale --- Technologie --- Architecture romaine --- Géologie --- History. --- Research --- Histoire --- Recherche --- Rome --- Mediterranean Region --- Méditerranée, Région de la --- Antiquities. --- Antiquités --- Volcanic ash, tuff, etc. --- Analysis. --- ROMACONS Project. --- Construction en béton --- Mécanique navale --- Géologie --- Méditerranée, Région de la --- Antiquités --- Volcanic ash, tuff, etc --- History --- Analysis --- Ocean engineering --- Underwater archaeology --- Buildings --- Civil engineering --- Concrete --- Engineering --- Public works --- Edifices --- Halls --- Structures --- Architecture --- Archaeology, Submarine --- Marine archaeology --- Maritime archaeology --- Nautical archaeology --- Submarine archaeology --- Archaeology --- Underwater exploration --- Marine archaeologists --- Deep-sea engineering --- Oceaneering --- Submarine engineering --- Underwater engineering --- Marine resources --- Oceanography --- Equipment and supplies --- Rim --- Roman Empire --- Roman Republic (510-30 B.C.) --- Romi (Empire) --- Byzantine Empire --- Rome (Italy) --- Buildings, structures, etc. --- Beton --- Building materials --- Built environment --- Pyroclastics --- Rocks, Volcanic --- Tephra --- Tuff --- Volcanic ejecta --- Volcanic rocks --- Igneous rocks --- Andosols --- Roman architecture --- Applied science --- Arts, Useful --- Science, Applied --- Useful arts --- Science --- Industrial arts --- Material culture --- Engineering, Marine --- Marine technology --- Naval engineering --- Naval architecture --- Building, Concrete --- Concrete building --- Construction, Concrete --- Building --- Roman Maritime Concrete Survey --- Roman Maritime Concrete Study