Global ETD Search
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Showing 1 to 9 of 9 for “"shallow-water carbonates"”.
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HlGH RESOLUTION PALAEOMAGNETIC ANALYSES OF CRETACEOUS SHALLOW WATER CARBONATES
… of continuous borehole cores of Lower Cretaceous shallow water carbonates from Southern Italy was obtained and studied lithologically and palaeomagnetically. It was found that the rocks are organized in cyclic lithofacies representing depositional environments from subtidal to supratidal and their …
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Analysis of cyclic shallow-water carbonates: Cambrian Highland Peak Formation, eastern Nevada
… recorded in Middle to lower Upper Cambrian shallow-water carbonate rocks in the southwestern United States and to refine stratigraphic correlation of this interval. Embedded Markov chain and cycle architectural analysis define the high-frequency accommodation signal, whereas cycle grouping …
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The oligo-miocene sediments of the Maltese Islands
… sedimentary sequence is entirely composed of shallow water carbonates, dominantly marine, and with biohermal developments in the upper and lower exposed formations. The intermediate formations accumulated in somewhat deeper water and are characterised by planktonic foraminifera.Subdivision of …
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The Neoproterozoic São Francisco Basin, central Brazil: tectonic evolution, paleoclimate, and mineral systems
… Sequence 3. Organic-rich, pyritiferous, deep-water, marine siltstones of Sequence 4 are overlain by shallow water carbonates of Sequence 5 that accumulated as sea-level fell during the Gaskiers Glaciation (ca. 579 Ma). Post-glacial glauconitic siltstones form the lower portion of Sequence 6 …
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Stratigraphy and Palaeoenvironment of the Paleocene/Eocene boundary interval in the Indus Basin, Pakistan
… allows the recognition of the P/E boundary in shallow water carbonates of the Indus Basin. This turnover is already reported from other Tethyan sections and from the Salt Range (Upper Indus Basin), Pakistan. The recognition of the LFT allows the inter-basinal and intra-basinal correlation of …
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Responses of a shallow-water ecosystem to the early Paleogene greenhouse environmental conditions : evolution of Larger Foraminifera and coral communities from the Northern Tethys
… that this global warming strongly influenced the shallow-water biosphere, triggering extinctions and turnover in the Larger Foraminifera (LF) community and the demise of corals. The successions from the Adriatic Carbonate Platform (SW Slovenia) represent an ideal location to test the hypothesis of …
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The impact of global environmental changes on exceptional preservation, extinction, and recovery in the early Jurassic (late Pliensbachian-Toarcian)
… Panthalassa Oceans) and depositional settings (shallow water carbonates versus deeper water shales). Scanning Electron Microscopy (SEM) and Energy Dispersive X-Ray Spectroscopy (EDS) analyses showed phosphatization is the main preservation pathway across all three deposits and multiple fossil …
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Investigations on the importance of early diagenetic processes for the mineralogical stabilisation and lithification of heterozoan carbonate assemblages : (Oligo-Miocene, Maltese Islands and Sicily)
… for the diagenetic evolution of many fossil carbonates. Only in recent years the importance of heterozoan carbonates, generally formed out of the tropics or in deeper waters, was realized. Diagenetic studies focusing on this kind of rocks are still scarce, but indicate that the diagenetic …
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INTEGRATING SEDIMENTOLOGY, STRATIGRAPHY, GEOCHEMISTRY AND 3D GEOLOGICAL MODELLING: CONTRIBUTION TO GEOLOGICAL MAPPING FOR LAND KNOWLEDGE (CARG SHEET 081 ¿ROVERETO¿)
… use planning, natural hazard mitigation, groundwater management, mineral resource exploration and environmental protection. In Italy, a country characterized by considerable geological fragility, the need for detailed geological knowledge and mapping has long been recognised. Shortly after its …