Volcaniclastic sedimentation influenced by logjam breakups? An example from the Blanco River, Chile

2020 ◽  
Vol 98 ◽  
pp. 102477 ◽  
Author(s):  
Aldo M. Umazano ◽  
Ricardo N. Melchor
Keyword(s):  
Volcaniclastic Sedimentation

Volcaniclastic sedimentation in coastal environments: the interplay between volcanism and Quaternary sea level changes (central Italy)

2002 ◽  
Vol 95-96 ◽  
pp. 141-154 ◽  
Author(s):  
Donatella de Rita ◽  
Marina Fabbri ◽  
Ilaria Mazzini ◽  
Paolo Paccara ◽  
Andrea Sposato ◽  
...  
Keyword(s):  
Sea Level ◽  
Central Italy ◽  
Coastal Environments ◽  
Sea Level Changes ◽  
Volcaniclastic Sedimentation

scholarly journals High Preservation Potential Volcaniclastic Sedimentation in the Serravallian Sequence of the Amantea Basin (Coastal Chain, North-Western Calabria)

Geosciences ◽  
2021 ◽  
Vol 11 (9) ◽  
pp. 360
Author(s):  
Cannata Chiara Benedetta ◽  
De Rosa Rosanna ◽  
Donato Paola ◽  
Morrone Consuele ◽  
Muto Francesco
Keyword(s):  
Marine Environment ◽  
Volcanic Glass ◽  
Structural Features ◽  
Depositional Sequence ◽  
Carbonate Material ◽  
Volcaniclastic Sedimentation ◽  
Sandstone Formation ◽  
Basin Area ◽  
Volcaniclastic Deposits ◽  
Pyroclastic Fall

Evidence of volcaniclastic sedimentation occurs in the first depositional sequence of the sedimentary succession of the Amantea Basin. Volcaniclastic deposits are intercalated in the upper part of a sandstone formation and these show a maximum thickness of about 8 m. The Amantea Basin is a Neogene depozone located along the Tyrrhenian margin of Calabria whose onset started during the Upper Serravallian. The source volcano to these materials had to have been located within or near to the marine basin in order to supply it with significant amounts of pyroclastic fragments emplaced by either pyroclastic fall/or flows during one or more explosive eruptions. The marine environment of volcaniclastic flows made up of pyroclastic fragments mixed with minor siliciclastic and carbonate material. The textural and structural features of the deposits and the composition of the volcanic glass fragments indicate an origin from a sub-aerial coeval explosive eruption, with initial sedimentation in a shallow marine environment, mixing with non-volcanic materials, reworking and final re-sedimentation into the basin. The age of the volcaniclastic/sedimentary sequence makes these deposits a marker for the geodynamic evolution of the area, and the lack of such horizons in the other coeval peri-Tyrrhenian basins allows us to consider the Amantea Basin as a confined elongated coastal basin area, whose tectonostratigraphic architecture denotes a structural partitioning of the eastern nascent Tyrrhenian Basin.

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