Structural highs formation and their relationship to sedimentary basins in the north Sicily continental margin (southern Tyrrhenian Sea): Implication for the Drepano Thrust Front

2005 ◽  
Vol 409 (1-4) ◽  
pp. 1-18 ◽  
Author(s):  
F. Pepe ◽  
A. Sulli ◽  
G. Bertotti ◽  
R. Catalano
Keyword(s):  
Continental Margin ◽  
Sedimentary Basins ◽  
Tyrrhenian Sea ◽  
The North ◽  
Thrust Front ◽  
Southern Tyrrhenian Sea

Tectono-stratigraphic modelling of the North Sicily continental margin (southern Tyrrhenian Sea)

2004 ◽  
Vol 384 (1-4) ◽  
pp. 257-273 ◽  
Author(s):  
Fabrizio Pepe ◽  
Giovanni Bertotti ◽  
Sierd Cloetingh
Keyword(s):  
Continental Margin ◽  
Tyrrhenian Sea ◽  
The North ◽  
Southern Tyrrhenian Sea

scholarly journals Growth and reproduction of the deep-water rose shrimp, Parapenaeus longirostris (Lucas, 1846) (Decapoda, Penaeidae), in the Southern Tyrrhenian Sea

Crustaceana ◽  
2014 ◽  
Vol 87 (10) ◽  
pp. 1168-1184 ◽  
Author(s):  
Marco Arculeo ◽  
Marco Arculeo ◽  
Sabrina Lo Brutto ◽  
Marco Arculeo ◽  
Sabrina Lo Brutto ◽  
...  
Keyword(s):  
Deep Water ◽  
Growth Function ◽  
Western Coast ◽  
Tyrrhenian Sea ◽  
The North ◽  
Von Bertalanffy Growth Function ◽  
Parapenaeus Longirostris ◽  
Southern Tyrrhenian Sea ◽  
First Maturity ◽  
Two Peaks

From June 2006 to May 2007, monthly samples ofParapenaeus longirostris(Lucas, 1846) were collected on land from the landings of two different, although contiguous, fishing grounds exploited by the bottom trawl fisheries of the two fishing harbours of Terrasini and Porticello, located on the north-western coast of Sicily. Carapace length (CL) of the female and male deep-water rose shrimp in Terrasini ranged from 9 to 32 mm and 13 to 26 mm, respectively, whereas in Porticello the length ranged from 8 to 31 mm and 13 to 26 mm, respectively. The Von Bertalanffy Growth Function parameters for Terrasini females and males were CL∞ = 38.5 mm, year−1and CL∞ = 32.5 mm, year−1, respectively. For Porticello females and males, the parameters were CL∞ = 40 mm, year−1and CL∞ = 30 mm, year−1, respectively. Analysis of maturity stages indicates that the deep-water rose shrimp is an asynchronous batch of almost continuous spawners, although one to two peaks of activity can be detected. In both fishing areas, the reproductive phase peaked twice, once in January and again from August to September. The sizes at first maturity (CL50%) were 27.8 and 26.6 mm CL for Terrasini and Porticello, respectively.

scholarly journals Geology and prospects of oil and gas bearing of east — Canadian continental margins

2019 ◽  
Vol 59 (4) ◽  
pp. 656-669
Author(s):  
A. Zabanbark ◽  
L. I. Lobkovsky
Keyword(s):  
Nova Scotia ◽  
Continental Margin ◽  
Late Cretaceous ◽  
Oil And Gas ◽  
Sedimentary Basins ◽  
Wide Distribution ◽  
Labrador Sea ◽  
Continental Margins ◽  
The North ◽  
Gas Bearing

At the limit of the East-Canadian continental margin there are three oil and gas regions from north to south: Labrador Sea shelves, margins of the Great Newfoundland Bank and the continental margin of Nova Scotia. In each of these distinguishing regions are a number of sedimentary basins completely plunging under the water. At the shelf of Labrador Sea distinguishing the following large sedimentary basins: Saglek, Hopdale and Havke, at the margin of Newfoundland Bank it is known the basins: Jeanne d’Arc, Flemish Pass and Orphan. At the Nova Scotia shelf there are Nova Scotian and Sable basins. It is remarkable at the lofty latitude like of Labrador Sea region the age of the productive sediments beginning from more ancient rocks (Paleozoic), than in basins situated in law latitude (Mesozoic). In consequence of this the stratigraphy diapason of oil and gas bearing of the north latitude is considerably wide. The prospect of oil and gas bearing in all region is related principally with continental slopes and turbidites sediments in its. Late Jurassic and early Cretaceous reservoirs would be the aim for deep drilling sediments. Wide distribution of late Cretaceous and early Tertiary prospects reservoirs of oil and gas is quite really so far as they are bedded in the shallow horizons. Also the prospect of oil and gas bearing at the margin of the basin is related to late Cretaceous and Tertiary sediments, to deposits of fan and diapirs salt.

scholarly journals Precambrian tectonic inheritance control of the NE Brazilian continental margin revealed by Curie point depth estimation

2021 ◽  
Vol 64 (2) ◽  
Author(s):  
Jefferson Tavares Cruz Oliveira ◽  
José Antonio Barbosa ◽  
David de Castro ◽  
Paulo Correia ◽  
José Ricardo Magalhães ◽  
...  
Keyword(s):  
Continental Margin ◽  
Curie Point ◽  
Sedimentary Basins ◽  
Depth Estimation ◽  
Geothermal Gradient ◽  
Magnetic Data ◽  
Tectonic Inheritance ◽  
The North ◽  
Gravimetric Data ◽  
Moho Depths

An investigation of Curie point depths (CPD) based on spectral analysis of airborne magnetic data was carried out in the NE Brazilian continental margin. The studied region represents a narrow hyper-extended margin with three sedimentary basins. Regional geothermal gradient and heat flow were also calculated. CPD results were integrated with interpretation of 2D deep seismic data and with estimated isostatic Moho depths. The results reveal that the narrow hyper-extended crust is 150 km wide in the southern sector and 80 km wide in the north, with a narrow ocean-continental transition (OCT) zone that varies from 50 km wide in the south sector to 30 to 20 km wide in the north. The CPD isotherm showed the strong influence of the three main continental blocks of Borborema ́s Shield in the tectonic evolution of the three marginal basins. The CPD analysis corroborated models provided by gravimetric data and successfully demonstrated the sharp control of basement compartments on the thermal properties of the marginal basins domains

scholarly journals Open-slope, translational submarine landslide in a tectonically active volcanic continental margin (Licosa submarine landslide, southern Tyrrhenian Sea)

2018 ◽  
Vol 477 (1) ◽  
pp. 133-150 ◽  
Author(s):  
M. Sammartini ◽  
A. Camerlenghi ◽  
F. Budillon ◽  
D. D. Insinga ◽  
F. Zgur ◽  
...  
Keyword(s):  
Slope Stability ◽  
Continental Margin ◽  
Submarine Landslide ◽  
Tyrrhenian Sea ◽  
Structural Discontinuity ◽  
Tectonically Active ◽  
Southern Tyrrhenian Sea ◽  
Multichannel Seismics ◽  
Back Arc ◽  
Detachment Surface

AbstractThe southern Tyrrhenian continental margin is the product of Pliocene–Recent back-arc extension. An area of approximately 30 km2 of gentle (about 1.5°) lower slope of the last glacial outer shelf sedimentary wedge in water depths of between 200 and 300 m failed between 14 and 11 ka BP. We approached the landslide by multibeam and sub-bottom profiler surveying, high-resolution multichannel seismics, and coring for stratigraphic and geotechnical purposes. With regard to a slope-stability analysis, we carried out an assessment of the stratigraphic and structural setting of the area of the Licosa landslide. This analysis revealed that the landslide detached along a marker bed that was composed of the tephra layer Y-5 (c. 39 ka). Several previously unknown geological characteristics of the area are likely to have affected the slope stability. These are the basal erosion of the slope in the Licosa Channel, a high sedimentation rate in the sedimentary wedge, earthquake shaking, the volcanic ash nature of the detachment surface, subsurface gas/fluid migration, and lateral porewater flow from the depocentre of wedge to the base of the slope along the high-permeability ash layers. A newly discovered prominent structural discontinuity is identified as the fault whose activity may have triggered the landslide.

Late Quaternary Tectonics vs Sedimentation history of the offshore Termini in a seismically active segment of the Northern Sicily Continental margin (Southern Tyrrhenian Sea)

2020 ◽  
Author(s):  
Elisabetta Zizzo ◽  
Attilio Sulli ◽  
Daniele Spatola ◽  
Christian Gorini ◽  
Maurizio Gasparo Morticelli
Keyword(s):  
High Resolution ◽  
Continental Margin ◽  
Late Quaternary ◽  
Mass Movement ◽  
Strike Slip ◽  
Seismic Facies ◽  
Tyrrhenian Sea ◽  
Depositional Sequence ◽  
Coastal Belt ◽  
Southern Tyrrhenian Sea

<p>We investigate the tectonically active Northern Sicily Continental margin focusing on the neotectonics affecting the Offshore of Termini (Southern Tyrrhenian Sea) by using high-resolution seismic and multibeam data. The sedimentary succession along the North Sicilian Continental Margin (NSCM) represents the marine prolongation of those outcropping along the Northern Sicily coastal belt. The NSCM has been originated as a consequence of a complex interaction of compressional events, crustal thinning, and strike-slip faulting. E–W, NW–SE, and NE–SW trending, both extensional and compressional faults, with a local strike-slip component, exerted control on the morphology of the present-day shelf and coastal areas during the Pleistocene. During the Quaternary,  the tectonic as well as depositional events have strongly shaped the margin forming the actual complex geomorphic setting of the margin. We present the main results of a high resolution survey that allow to identify several features (e.g. Mass Transport Deposits and pockmarks) linked to gravitational mass movement and fluids escape processes strongly controlled by the tectonics affecting the NSCM. All over the study area, we mapped inside the Late Quaternary depositional sequence repeated and variously distributed MTDs, characterised by transparent/chaotic seismic facies, interbedded to hemipelagic deposits, with seismic facies showing subparallel seismic reflectors of the transgressive and high stand systems tracts. We infer that this MTDs have been seismically induced by earthquakes.  We estimate the recurrence times of earthquakes, by using an elaborate age-model that considers a constant sedimentation rate for the last 11.5 My, between 680 and 2200 years.</p>

scholarly journals First Evidence of Contourite Drifts in the North-Western Sicilian Active Continental Margin (Southern Tyrrhenian Sea)

2021 ◽  
Vol 9 (10) ◽  
pp. 1043
Author(s):  
Daniele Spatola ◽  
Attilio Sulli ◽  
Daniele Casalbore ◽  
Francesco Latino Chiocci
Keyword(s):  
Continental Margin ◽  
Active Continental Margin ◽  
High Amplitude ◽  
Tyrrhenian Sea ◽  
Maximum Thickness ◽  
The North ◽  
Contourite Drifts ◽  
Mass Flow Deposits ◽  
Seismic Reflectors ◽  
North Western

We present the results of an integrated geomorphological and seismo-stratigraphic study based on high resolution marine data acquired in the north-western Sicilian continental margin. We document for the first time five contourite drifts (marked as EM1a, EM2b, EM2, EM3a, and EM3b), located in the continental slope at depths between ca. 400 and 1500 m. EM1a,b have been interpreted as elongated mounded drifts. EM1a,b are ca. 3 km long, 1.3 km wide, and have a maximum thickness of 36 m in their center that thins northwards, while EM1b is smaller with a thickness up to 24 m. They are internally characterized by mounded seismic packages dominated by continuous and parallel reflectors. EM2 is located in the upper slope at a depth of ca. 1470 m, and it is ca. 9.3 km long, more than 3.9 km wide, and has a maximum thickness of ca. 65 m. It consists of an internal aggradational stacking pattern with elongated mounded packages of continuous, moderate to high amplitude seismic reflectors. EM2 is internally composed by a mix of contourite deposits (Holocene) interbedded with turbiditic and/or mass flow deposits. EM1a,b and EM2 are deposited at the top of an erosional truncation aged at 11.5 ka, so they mostly formed during the Holocene. EM3a,b are ca. 16 km long, more than 6.7 km wide, and have a thickness up to 350 m. Both EM2 and EM3a,b have been interpreted as sheeted drift due to their morphology and seismic features. The spatial distribution of the contourite drifts suggests that the drifts are likely generated by the interaction of the LIW, and deep Tyrrhenian water (TDW) on the seafloor, playing an important role in the shaping this continental margin since the late Pleistocene-Holocene. The results may help to understand the deep oceanic processes affecting the north-western Sicilian continental margin.

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