Sedimentary Characteristics of the Holocene Tsunamigenic Deposits in the Coastal Systems of the Cadiz Gulf (Spain)

Influence of inherited topography on the Holocene sedimentary evolution of coastal systems: An example from Arno coastal plain (Tuscany, Italy)

Geomorphology ◽

10.1016/j.geomorph.2011.08.009 ◽

2011 ◽

Vol 135 (1-2) ◽

pp. 117-128 ◽

Cited By ~ 37

Author(s):

Veronica Rossi ◽

Alessandro Amorosi ◽

Giovanni Sarti ◽

Miriam Potenza

Keyword(s):

Coastal Plain ◽

The Holocene ◽

Sedimentary Evolution ◽

Coastal Systems

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Distribution and morphology of inner-shelf sand bodies off southwest Newfoundland based on merged multibeam sonar and LiDAR data

Canadian Journal of Earth Sciences ◽

10.1139/cjes-2018-0311 ◽

2020 ◽

Vol 57 (1) ◽

pp. 114-122 ◽

Cited By ~ 2

Author(s):

John Shaw ◽

Yongsheng Wu ◽

D. Patrick Potter

Keyword(s):

Sea Level ◽

Submarine Canyon ◽

Lidar Data ◽

Inner Shelf ◽

Terrestrial Lidar ◽

The Holocene ◽

Clear View ◽

Coastal Systems ◽

Holocene Transgression ◽

Sand Bodies

The inner shelf off southwest Newfoundland, bordering the Laurentian Channel, was mapped with multi-beam sonar between depths of 200 and ∼20 m, overlapping with coverage by marine/terrestrial LiDAR from maximum depths of 30 m to above sea level. The new data provide the first clear view of linkages between terrestrial and nearshore coastal systems and the inner shelf. Offshore sand reservoirs associated with adjacent sandy coastal barriers and spits are thin (∼2 m), and isolated from one another, so that bedrock is the dominant seafloor terrain on the inner most shelf. The offshore sand reservoirs link with complex nearshore bar systems, from which it is inferred that sediment exchange with terrestrial systems can occur. Several isolated sand bodies are interpreted as residuals from former coastal systems destroyed during the Holocene transgression. The new data reveal the unexpected existence of a submarine canyon that facilitates transport of sediment from the inner shelf into the deep glacial trough of the Laurentian Channel.

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The Holocene environmental history of Lake Hoare, Taylor Valley, Antarctica, reconstructed from sediment cores

Antarctic Science ◽

10.1017/s0954102011000125 ◽

2011 ◽

Vol 23 (3) ◽

pp. 307-319 ◽

Cited By ~ 5

Author(s):

Bernd Wagner ◽

Sabrina Ortlepp ◽

Peter T. Doran ◽

Fabien Kenig ◽

Martin Melles ◽

...

Keyword(s):

Environmental History ◽

Late Holocene ◽

Sediment Cores ◽

The Holocene ◽

Sedimentary Characteristics ◽

Fine Grained ◽

Taylor Valley ◽

Victoria Land ◽

History Of ◽

Lake Fryxell

AbstractUp to 2.3 m long sediment sequences were recovered from the deepest part of Lake Hoare in Taylor Valley, southern Victoria Land, Antarctica. Sedimentological, biogeochemical, and mineralogical analyses revealed a high spatial variability of these parameters in Lake Hoare. Five distinct lithological units were recognized. Radiocarbon dating of bulk organic carbon samples from the sediment sequences yielded apparently too old ages and significant age reversals, which prevented the establishment of reliable age-depth models. However, cross correlation of the sedimentary characteristics with those of sediment records from neighbouring Lake Fryxell indicates that the lowermost two units of the Lake Hoare sediment sequences were probably deposited during the final phase of proglacial Lake Washburn, which occupied Taylor Valley during the late Pleistocene and early Holocene. High amounts of angular gravel and the absence of fine-grained material imply a complete desiccation with subaerial conditions in the Lake Hoare basin in the middle of the Holocene. The late Holocene (< c. 3300 calendar yr bp) is characterized by the establishment of environmental conditions similar to those existing today. A late Holocene desiccation event, such as proposed in former studies, is not indicated in the sediment sequences recovered.

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