Petrogenesis of the Tarr albitite—carbonatite complex, Sinai Peninsula

1975 ◽  
Vol 40 (309) ◽  
pp. 13-24 ◽  
Author(s):  
Aryeh Ervin Shimron
Keyword(s):  
Carbonate Rocks ◽  
Liquid Immiscibility ◽  
Dead Sea ◽  
Rift System ◽  
Sinai Peninsula ◽  
Carbonatite Complex ◽  
Slow Cooling ◽  
Copper Mineralization ◽  
The Dead ◽  
African Rift

SummaryLarge albitite bodies associated with explosive brecciation, fenite aureoles, intrusive carbonate rocks, olivine dolerites, and copper mineralization are described from the Dead Sea rift region in the south-eastern Sinai Peninsula. The main carbonate phases comprise breunnerite and dolomite with actinolite the main phase in the fenites. Field and isotopic evidence indicates that the intrusive carbonate rocks are of carbonatitic origin. The cogenetic, almost monomineralic main phases can be attributed to fractional crystallization and liquid immiscibility acting on a highly gascharged, slow-cooling gabbroic magma. The complex, which is probably of Cretaceous (or older) age, appears to be related to early continental separation along the Dead Sea branch of the African rift system. The porphyry-type copper deposits resemble others that are located along crustal accretion (Iceland) or subduction (Chile) zones.

A discussion on the structure and evolution of the Red Sea and the nature of the Red Sea, Gulf of Aden and Ethiopia rift junction - The structural pattern of the Afro-Arabian rift system in relation to plate tectonics

1970 ◽  
Vol 267 (1181) ◽  
pp. 383-391 ◽  
Keyword(s):  
Red Sea ◽  
Plate Tectonics ◽  
Structural Model ◽  
Structural Features ◽  
Dead Sea ◽  
Strike Slip ◽  
Rift System ◽  
Gulf Of Aden ◽  
Structural Pattern ◽  
The Dead

The structural pattern of the Afro-Arabian rift system suggests the influence of transcurrent faulting in the development of the main branches of the system, particularly along the Dead Sea rift, the Gulf of Suez and Red Sea, and the eastern rift of Africa. Geophysical evidence indicates that the Red Sea and Gulf of Aden formed as a result of the separation of the Arabian and African continental blocks. Previously determined rotation poles about which the blocks separated neglect some structural features of the region. A satisfactory refit of Arabia to Africa can­ not be made unless some relative movements of parts of the Africa block too place. It is proposed that dextral strike-slip movements took place between Africa and Arabia along the Red Sea and that sinistral strike-slip movements occurred along the Dead Sea rift. In addition, rotation of the E. Kenya-Somalia block east of the eastern rift of Africa took place. Structural and palaeomagnetic evidence supports such movements. The structural model is compatible with the observed tectonic pattern and provides a genetic link between the formation of the Red Sea, Gulf of Aden and the African rifts.

scholarly journals Load Structure Seismites in the Dead Sea Area, Israel: Chronological Benchmarking with 14C Dating

Radiocarbon ◽  
2001 ◽  
Vol 43 (3) ◽  
pp. 1383-1390 ◽  
Author(s):  
D Bowman ◽  
H J Bruins ◽  
J van der Plicht
Keyword(s):  
Radiocarbon Dating ◽  
Structure Type ◽  
Dead Sea ◽  
Alluvial Fan ◽  
Soft Sediment ◽  
14C Dating ◽  
Lateral Extent ◽  
The Dead ◽  
African Rift ◽  
Sea Area

The Dead Sea is a terminal lake located in the seismically active zone of the Syro–African Rift Valley. The water level of the Dead Sea has been receding dramatically during the last decades, resulting in significant entrenchment of wadis towards its shores. Exposed sections in fan deltas reveal abruptly changing facies of alluvial fan, beach, and shallow lacustrine environments. Our study focuses on soft sediment deformations of the load-structure type. Though of limited lateral extent, their field characteristics concur with the widely accepted criteria that define seismites. This paper demonstrates the potential of load-structures as seismic-chronological benchmarks through radiocarbon dating. We present the first evidence of 14C correlation between two types of seismites in different locations: load structure and mixed layer.

Structural Position of the Pleistocene Gesher Benot Ya'aqov Site in the Dead Sea Rift Zone

1989 ◽  
Vol 31 (3) ◽  
pp. 371-376 ◽  
Author(s):  
N. Goren-Inbar ◽  
S. Belitzky
Keyword(s):  
Rift Zone ◽  
Dead Sea ◽  
Tectonic Activity ◽  
Middle Pleistocene ◽  
Rift System ◽  
East African ◽  
Structural Position ◽  
Red Sea Rift ◽  
Geographical Position ◽  
The Dead

AbstractNewly discovered outcrops of the middle Pleistocene Benot Ya'aqov Formation are strongly disturbed due to recent tectonic activity along the Dead Sea Rift. The lacustrine-fluviatile sediments of this formation comprise the littoral facies of a paleo-lake that occupied the adjacent Hula Basin. Acheulian artifacts, found embedded in the formation, have typical African characteristics. The geographical position of the site (the northern extension of the East African Red Sea Rift System) is important for understanding hominid diffusion from Africa to Eurasia.

scholarly journals Holothurian sclerites from the Triassic of Jordan and their stratigraphic importance

1996 ◽  
Vol 15 (1) ◽  
pp. 83-95 ◽  
Author(s):  
Walid Sadeddin
Keyword(s):  
Acetic Acid ◽  
Carbonate Rocks ◽  
Middle Triassic ◽  
Dead Sea ◽  
Upper Triassic ◽  
Germanic Basin ◽  
Mass Occurrence ◽  
The Dead ◽  
Northern Alps ◽  
Northeast Corner

Abstract. Holothurian selerites are some of the most stratigraphically important microfossils of the middle Triassic of Jordan. Stratigraphically and palaeogeographically important faunas have been obtained by dissolving Triassic carbonate rocks with a dilute acetic acid. The oldest forms, Acanthotheelia jordanica Sadeddin, Priscopedatus quadratus Kozur & Mostler, and Tetravirga perforata Mostler, occur in the Hisban Formation (Anisian) in the area of the northeast corner of the Dead Sea and Wadi Abu Oneiz. North of this area in Wadi Salit, Ladinian holothurian faunas are especially characterized by the mass occurrence of Schizotheelia jordanica and Schizotheelia multiporata Kozur & Sadeddin in the lower part of the section (Fassanian) and Theelia tubercula Kristan-Tollmann in the upper part (Longobardian). In spite of some differences, the Jordanian Middle Triassic holothurian faunas are similar to those from the Northern Alps and Germanic Basin, and the Himalayas. As yet, no holothurian selerites have been recovered from Jordanian Lower or Upper Triassic deposits.

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