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The Sinai triple junction revisited. In: Z. Ben-Avraham (Editor), Sedimentary Basins within the Dead Sea and Other Rift Zones. Tectonophysics, 141: 181-190. This paper is a summary of a more detailed analysis of the kinematics of the Sinai triple junction (Courtillot et ai-, 1987). Accurate kinematic data are lacking along the Red Sea, and they can be supplemented by bathymrie, topographic and.
The Afar region is the only place on earth where a tectonic triple junction is located above sea level (Red Sea, Gulf of Aden, and African Rift Valley). Erta Ale volcano can be considered equivalent to submarine spreading ridges. The Erta Ale Range is 95 km long and 50 km wide. Erta Ale volcano has feature similar to the Hawaiian volcanoes of Kilauea and Mauna Loa. The caldera is 1.6 km x 0.7.
This extends to about 1100 km and goes from the Gulf of Aqaba triple junction, up to the plate boundary between the Arabia and Anatolian sub- plate, the left lateral East Anatolian fault, the Carmel ruptures zone (that itself extends more than 130 km of the northwestern trend) and the Gulf of Suez divergent rift - that follows the same route as the Mid Red Sea spreading ridge (fig.
The junction of the Red Sea, the Gulf of Aden and the East African Rift centered in the Afar Triangle (the Afar Triple Junction) is the only Ridge-Ridge-Ridge (R-R-R) triple junction above sea level. The Rodrigues Triple Point is a R-R-R triple junction in the southern Indian Ocean, where the African, the Indo-Australian and the Antarctic Plates meet. The Galapagos Triple Junction is an R-R-R.
A triple junction is the point where the boundaries of three tectonic plates meet. At the triple junction a boundary will be one of 3 types - a ridge, trench or transform fault - and triple junctions can be described according to the types of plate margin that meet at them. Of the many possible types of triple junction only a few are stable through time ('stable' in this context means that the.
The Afar Triangle is bordered by high areas, as shown on the topographic map. Plate tectonics. The Depression is a plate tectonic triple junction. This geologic feature is one of earth's great active volcanic areas, so the floor of the depression is composed of lava, mostly basalt. The continuous process of volcanism makes mineral deposits, like sulfur, salt, bentonite, and gypsum. There are.
We investigate the current kinematics of the triple junction included in our GPS data set by building simple block models. The deformation in Central Afar can be described by adding a central microblock evolving separately from the three surrounding plates. In this model, the northern block boundary corresponds to a deep EW-trending trans-tensional dislocation, locked from the surface to 10.
This triple junction was formed due to the later collision with the small continent of Avalonia. In the center of this triple junction the London Brabant massif developed, that would maintain a structural high during most of the Paleozoic. In the Southern North Sea the Rocks of pre Silesian age can be subdivided in two groups. The oldest comprises of slightly metamorphosed and deformed rocks.
The Afar Rift represents the triple junction among the Main Ethiopian Rift, the Gulf of Aden and the Red Sea, separating the Nubia, Arabia and Somalia plates. The presence of a mantle plume has long been recognized in the region as an important factor influencing the tectonic activity and the extensive volcanism. The work presented in this thesis aimed to provide new insights in the role of.
The actively splitting African Plate and the Arabian Plate meet in what geologists call a triple junction, where the Red Sea meets the Gulf of Aden. A new spreading centre may be developing under Africa along the East African Rift Zone. When the continental crust stretches beyond its limits, tension cracks begin to appear on the Earth's surface. Magma rises and squeezes through the widening.
Sea floor spreading in the Gulf of Aden begun about 16Ma and about 4Ma in the Red Sea (e.g. Baker et al 1996). With the East African Rift System, the Red Sea and the Gulf of Aden form the Afar triple junction. The Red Sea runs roughly straight for 2000km northwards to where it joins the Aqaba-Dead Sea transform rift system. The Gulf of Aden is.
Examples. The junction of the Red Sea, the Gulf of Aden and the East African Rift centered in the Afar Triangle is an example of a triple junction (the Afar Triple Junction).This is the only Ridge-Ridge-Ridge (R-R-R) triple junction above sea level. Another example of a triple junction is the junction between the Arabian Plate, the African Plate, and the Indo-Australian Plate.
Map of East Africa showing some of the historically active volcanoes(red triangles) and the Afar Triangle (shaded, center) -- a so-called triple junction (or triple point), where three plates are pulling away from one another: the Arabian Plate, and the two parts of the African Plate (the Nubian and the Somalian) splitting along the East African Rift Zone.
The Afar Triple Junction is where the Red Sea, Gulf of Aden and East African Rift meet. It is the only RRR triple junction that is higher than sea level. TTT: This type of triple junction is found in central Japan. The Boso Triple Junction off the coast there is where the Okhotsk, Pacific and Phillippine Sea plates meet.
The Afar triple junction is a depression consisting of a rift-rift-rift triple boundary associated with the flood basalt magmatism 31 million years ago (figure 3). As stated previously, it is the middle of three rifting segments which all seem to have occurred synchronouly: African Rift, Aden Ridge and the Red Sea Rift. The actual formation of the triple junction did not occur until the Main.GPS measurements adjacent to the southern Red Sea and Afar Triple Junction, indicate that the Red Sea Rift bifurcates south of 17 degrees N latitude with one branch following a continuation of the main Red Sea Rift (similar to 150 degrees Az.) and the other oriented more N-S, traversing the Danakil Depression. These two rift branches account for the full Arabia-Nubia relative motion.The Middle Jurassic Rattray Volcanic Province is located at the triple junction of the North Sea continental rift system. It has previously been thought to be sourced from three large central volcanoes: the Glenn, Fisher Bank and Ivanhoe Volcanic Centres. Re-interpretation using 3D seismic and well data shows that no volcanic centres are present and the Rattray Volcanics were instead sourced.