scholarly journals Studies on the Indo-Pacific Tridacnidae (<i>Tridacna maxima</i>) from the Northern Red Sea, Egypt

2012 ◽  
Vol 03 (05) ◽  
pp. 1089-1095 ◽  
Author(s):  
Manal S. Mekawy ◽  
Hashem A. Madkour
Keyword(s):  
Red Sea ◽  
Tridacna Maxima ◽  
Northern Red Sea

scholarly journals Tissue-Specific Microbiomes of the Red Sea Giant Clam Tridacna maxima Highlight Differential Abundance of Endozoicomonadaceae

2019 ◽  
Vol 10 ◽  
Author(s):  
Susann Rossbach ◽  
Anny Cardenas ◽  
Gabriela Perna ◽  
Carlos M. Duarte ◽  
Christian R. Voolstra
Keyword(s):  
Red Sea ◽  
Giant Clam ◽  
Differential Abundance ◽  
Tissue Specific ◽  
Tridacna Maxima

scholarly journals Laminae type and possible mechanisms for the formation of laminated sediments in the Shaban Deep, northern Red Sea

2005 ◽  
Vol 2 (4) ◽  
pp. 331-362
Author(s):  
I. A. Seeberg-Elverfeldt ◽  
C. B. Lange ◽  
J. Pätzold ◽  
G. Kuhn
Keyword(s):  
Water Column ◽  
Red Sea ◽  
Water Depth ◽  
Laminated Sediments ◽  
Gravity Core ◽  
Fecal Pellets ◽  
Laminated Structure ◽  
Pyrite Formation ◽  
Backscattered Electron ◽  
Northern Red Sea

Abstract. Laminated sediments in the Shaban Deep, a brine-filled basin in the northern Red Sea, were analyzed with backscattered electron imagery. Here we present possible mechanisms involved in the formation of laminae of various types and homogenous intervals arising from the detailed investigation of multicore GeoB 7805-1 (26 13.9' N and 35 22.6' E; water depth 1447 m) and gravity core GeoB 5836-2 (26 12.61' N, 35 21.56' E; water depth 1475 m). Sediment makeup includes six types: a) a laminated structure with alternating light (mainly coccoliths) and dark (diatom frustules) layers, where the diatom component is indicative of the intra-annual variability between stratification and mixing events; b) a pocket-like structure attributed to the sinking of particles within fecal pellets and aggregates; c) a matrix of tightly packed diatoms that relates to extended stratification/mixing periods of the water column; d) homogenous intervals that result from turbidity deposition; e) silt accumulations which origin may lie in agglutinated foraminifers; and f) pyrite layers with pyrite formation initiated at the seawater-brine interface.

scholarly journals Transition from continental rifting to oceanic spreading in the northern Red Sea area

2021 ◽  
Author(s):  
Sami El Khrepy ◽  
Ivan Koulakov ◽  
Nassir Al-Arifi ◽  
Mamdouh S. Alajmi ◽  
Ayman N. Qadrouh
Keyword(s):  
Red Sea ◽  
Plate Tectonics ◽  
Continental Rifting ◽  
Low Velocity ◽  
Lower Velocity ◽  
Velocity Anomaly ◽  
Oceanic Spreading ◽  
Lithospheric Extension ◽  
Sea Area ◽  
Northern Red Sea

&lt;p&gt;&lt;strong&gt;Lithosphere extension, which plays an essential role in plate tectonics, occurs both in continents (as rift systems) and oceans (spreading along mid-oceanic ridges). The northern Red Sea area is a unique natural geodynamic laboratory, where the ongoing transition from continental rifting to oceanic spreading can be observed. Here, we analyze travel time data from a merged catalogue provided by the Egyptian and Saudi Arabian seismic networks to build a three-dimensional model of seismic velocities in the crust and uppermost mantle beneath the northern Red Sea and surroundings. The derived structures clearly reveal a high-velocity anomaly coinciding with the Red Sea basin and a narrow low-velocity anomaly centered along the rift axis. We interpret these structures as a transition of lithospheric extension from continental rifting to oceanic spreading. The transitional lithosphere is manifested by a dominantly positive seismic anomaly indicating the presence of a 50&amp;#8211;70-km-thick and 200&amp;#8211;300-km-wide cold lithosphere. Along the forming oceanic ridge axis, an elongated low-velocity anomaly marks a narrow localized nascent spreading zone that disrupts the transitional lithosphere. Along the eastern margins of the Red Sea, the lithosphere is disturbed by the lower-velocity anomalies coinciding with areas of basaltic magmatism.&lt;/strong&gt;&lt;/p&gt;

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