High sedimentation rates and variable dispersal patterns in the western Hellenic Trench

Stanley, Daniel Jean; Knight, R D; Stuckenrath, Robert; Catani, G.

doi:10.1038/273110a0

Cited by 36 publications

(21 citation statements)

References 9 publications

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“…Mud layers of this type ( Fig. 1 B, C) have been recorded in cores from the Western Alboran Basin [ 11 ] and the Gozo Basin in the Corsican Trough [ 12] in the Western Mediterranean, and in the Hellenic Trench [7,13,14] and some Ridge basins [15] in the Eastern Mediterranean (Fig. 2).…”

Section: U N I F I T E S : T H E I R M O R E Obvious C H a R A C T E mentioning

confidence: 99%

“…2) exceeds 10 m [9]. Radiocarbon-dated cores [9,11,14] indicate that structureless mud strata, regardless of thickness, have been deposited rapidly. Minimal accumulation rates are generally >200 cm per 1000 years.…”

Section: U N I F I T E S : T H E I R M O R E Obvious C H a R A C T E mentioning

confidence: 99%

“…This is formulated on the basis of core recovery in Hellenic Trench basins and on the hypothesis that transformation, or evolution, from one of several transport mechanisms may occur during a single flow event [7]. The model thus accounts for slumps, debris and dense mass flow units, and sand and mud turbidites that are preferentially deposited on steep unstable slopes, in contrast to finer deposits, including silt turbidites and clayey silt unifites, that prevail at the base-of-slope and in basin plains proper [ 13,14].…”

Section: Possible Unifite Origins and Working Hypothesesmentioning

confidence: 99%

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Unifites: structureless muds of gravity-flow origin in Mediterranean basins

Stanley

1981

Geo-Marine Letters

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Unifite is the descriptive term applied to a structureless or faintly laminated, often thick, mud layer revealing a fining-upward trend. Study of Mediterranean basins suggests this mud type represents rapid, single event deposition from low-density gravity flows. This interpretation is based on unifite restriction to basin plains, distinct vertical and lateral petrologic trends, and lithofacies association with mud turbidites. Deposition involves accumulation in small, topographically restricted depressions, basinward displacement involving repeated failure and redeposition, slope-relief bypassing resulting in progressive fining and homogenization downslope, and modification by hydraulic jump effects at the base-of-slope.

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Section: U N I F I T E S : T H E I R M O R E Obvious C H a R A C T E mentioning

confidence: 99%

Section: U N I F I T E S : T H E I R M O R E Obvious C H a R A C T E mentioning

confidence: 99%

Section: Possible Unifite Origins and Working Hypothesesmentioning

confidence: 99%

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Unifites: structureless muds of gravity-flow origin in Mediterranean basins

Stanley

1981

Geo-Marine Letters

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“…Slumps are indicated by arrow (modified from Stanley et al, 1978). logic changes are believed to record successive oxic-anoxic cycles. This condition was different at times in the past, as is indicated by alternating sequences of light-and dark-colored sediments in Pliocene and Pleistocene cores.…”

Section: Paleoceanographic Changes and Organic-rich Mudsmentioning

confidence: 99%

Geological Evolution of the Mediterranean Basin

Stanley¹,

Wezel²

1985

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“…the Hellenic Trench. Coarser grained (sandy) turbidites are usually associated with strong earthquake motions (seismoturbidites) (Anastasakis and Piper, 1991), while muddy turbidites are present along sediment cores from most of the deep basins (unpublished data; deep valley and homogenites in most of the SW Ionian sub-basins (Stanley et al, 1978;Poulos et al, 1999).…”

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confidence: 98%

The Hellenic deep sea observatory: Science objectives and implementation

Lykousis

Nittis

Ballas

et al. 2015

Seafloor Observatories

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The Hellenic observatory in the SE Ionian Sea is located on the steep marginal slopes and basins of the western segment of the Hellenic Arc and Trench System (HATS) ( Figure 5.1). The Hellenic Arc and Trench System is a typical subduction zone that is the most tectonically active region in Europe, implying a complicated submarine morphology with numerous, deep, pull-apart sub-basins and a variety of geohazards like high seismicity, slope instabilities and basin wide tsunamis. Fluid emissions, methane gas seeps and mud volcanism in the Eastern Mediterranean accretionary prism provide the substrate for speHellenic Trench are also sensitive to climate changes, since the deep sub-basins are the ultimate destination of dense (cold and salt) water masses formed in the Adriatic and Aegean Seas. Consequently, the temperature and salinity of bottom waters provides a year-toyear record of the (winter) low temperature and/or precipitation-aridity of the NE Mediterranean Sea. Being the most oligotrophic European sea the deep ecosystem of the Mediterranean Sea is sensitive to climate changes. It is also known that the Hellenic Trench region is a major pathway and important feeding ground for cetaceans in the Eastern Mediterranean (SE Sicily-SW Peloponnesus-S Crete-W Cyprus) (Reeves and Di Sciara, 2006).

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High sedimentation rates and variable dispersal patterns in the western Hellenic Trench

Cited by 36 publications

References 9 publications

Unifites: structureless muds of gravity-flow origin in Mediterranean basins

Unifites: structureless muds of gravity-flow origin in Mediterranean basins

Geological Evolution of the Mediterranean Basin

The Hellenic deep sea observatory: Science objectives and implementation

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