By Jean-René Vanney, Maurice Gennesseaux (auth.), Daniel Jean Stanley, Forese-Carlo Wezel (eds.)
The Mediterranean Sea, nestled among Africa, southern Europe, and the center East, will be estimated as a posh picture-puzzle comprising a variety of difficult items, lots of that are already in position. A common photo, when it comes to technological know-how, has emerged, even supposing at the moment huge gaps are famous and a few components of the image stay fuzzy and vague. lately this attention-grabbing, mind-teasing puzzle picture has turn into clearer with person items extra simply famous and speedily emplaced, mostly by way of multidisciplinary and multinational staff efforts. during this admire, the specified software Panel on Marine Sciences of the NATO clinical Af gala's department thought of the benefits of beginning 4 meetings concerning the Mediterranean surroundings. It used to be instructed that the 1st, emphasizing geology, should still dovetail with next seminars on actual oceanogra phy, marine biology, and ecology and man's impression at the traditional Medi terranean regime. At a convention held in Banyuls-sur-Mer, France, in August 1979, Profes sor Raimondo Selli was once recommended by means of a few panel individuals to begin an advert vanced learn Institute (ARI) that might concentration totally on the geologi cally contemporary evolution of the Mediterranean Sea and function a logical base for destiny NATO meetings at the Mediterranean.
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Extra resources for Geological Evolution of the Mediterranean Basin: Raimondo Selli Commemorative Volume
Fig. 3. Nilotic and Levant margins. I, coastal and lacustrine plain (arrow: retreating coast line); 2, continental shelf (SB: shelfbreak); 3, escarpment; 4, marginal plateau (a) and seamount (b); 5, submarine canyon and sea valley; 6, continental rise and deepsea fan (a); 7, erosional moat; 8, basin plain; 10, halokinetic features, dome (a) and low diapir (b); 11, Levant Platform; 14, subduction trench; 16, submarine passage; 17, fracture, fault (a), shear zone (b), buried structure (c); 18, spreading axis (Red Sea).
The most striking characteristic of this sector is the subangular arrangement (northwest-southeast and southwest-northeast) imposed by frontal (westward) and oblique (eastward) subduction. The mounts and ridges are buttelike uplifted features (examples: Matapan and Strabo mounts, respectively 2496 and 711 m) of different size and shape. They may represent outward overturned folds, probably modified by halokinesis. Trenches are deep (to 5 km), irregularly shaped depressions. Their structural and sedimentary discontinuity is attributed to partial blocking by island flanks.
Chart of the Quaternary prodelta of the Var River (Provence), kindly provided by Decca-Survey France. Location shown in Figs. 7. The block-diagram has been computer generated from a digital data bank. The original contour map (at a scale of 1 : 10,000) was prepared from a dense bathymetric line survey (50 m apart), using a narrow beam (6°) echosounder. The chart depicts the narrow deltaic shelf, deep and intense dissection by a radial ravine system, fiat bottom of the Var Canyon (on the left of the diagram) contrasting with the sharp and crenulate crests, and the near-continuity between the subaerial and submerged segments of the Var Valley.