scholarly journals Deriving a Correlation of Cementation Factor in Nubian Sandstone Formation (Upper and Lower Cretaceous), Sirt Basin

2019 ◽  
Vol 3 (1) ◽  
pp. 286-291 ◽  
Author(s):  
HM Sbiga ◽  
Gamal Alusta
2017 ◽  
Author(s):  
John P. Green ◽  
Dean Lomax

A fragmentary ichthyosaur specimen collected in situ at Castle Top Quarry in Nettleton, Lincolnshire, UK from exposures of the Lower Cretaceous (Berriasian) Spilsby Sandstone Formation (Subcraspedites ?preplicomphalus Zone) is reported. In general, Early Cretaceous ichthyosaurs from the Berriasian to Barremian are poorly understood. Despite the fragmentary nature of the described specimen, it is the first ichthyosaur reported from this specific zone and adds to the literature another rare ichthyosaur from the Berriasian.


Author(s):  
James A. Harrell ◽  
Abdelrahman Ali Mohamed

Nubia is well endowed with the geological resources needed to supply a succession of ancient cultures and kingdoms. Igneous and metamorphic rocks of the region’s Basement Complex provided most of the materials, including gold, copper, gemstones, and a variety of ornamental stones. Overlying the Basement Complex are sedimentary rocks and among these is the Nubian Sandstone Formation, which supplied the material used to build Nubia’s many temples and pyramids. This formation also provided the oolitic ironstone that was the raw material for Kushite iron production as well as two unusually hard varieties of sandstone—iron oxide-cemented ferricrete and quartz-cemented quartzite—that were used in buildings where extra strength was needed and also for many ornamental applications. Surficial sediments deposited by the Nile River and desert wadis were important sources of gold, gemstones, and, for ceramics, clay. A total of 117 ancient mines and quarries have been identified in Nubia with twenty-three for sandstone, seven for ornamental stones, four for quartzite, seventy-six for gold, five for copper, one each for iron and lead, and three for gemstones.


2019 ◽  
Author(s):  
Syofvas Syofyan ◽  
Agus Izudin Latief ◽  
Mohsen Ahmed Al Amoudi ◽  
Saif Al-Shamsi ◽  
Asma Hassan Ali Bal Baheeth ◽  
...  

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