Study Document
...Egypt Pan-African Cratonization (about 800 to 680 Ma)
Nehlig et al. (2002) conducted a study to review the Pan-African evolution of the Arabian Shield on the premise that new perspectives on the geologic history and structural evolution on the Arabian Shield had emerged. These new perspectives were brought by the extensive fieldwork as well as synthesis and review of structural, aeromagnetic, geochemical, geologic, and geochronological data. The geologic evolution of the Arabian Shield took place between 900 to 550 Ma. This period was also characterized by the “formation, amalgamation, and final Pan-African cratonization of several tectonostratigraphic terranes” (Nehlig et al., 2002, p.103). These terranes were separated by key NW-trending faults and various oriented suture zones covered by ophiolites i.e. serpentinized ultramafic rocks.
Pan-African cratonization between 800 and 680 Ma incorporated the final cratonization of the terranes. The final cratonization of the terranes, which took place between 680 and 610 Ma, generated……
Reference
Caby, R. (2003, May 27). Terrane Assembly and Geodynamic Evolution of Central-Western Hoggar: A Synthesis. Journal of African Earth Sciences, 37, 133-159.
Kroner, A., Roobol, M.J., Ramsay, C.R. & Jackson, N.J. (2013, February 28). Pan African Ages of Some Gneissic Rocks in the Saudi Arabian Shield. Journal of the Geological Society, London, 136, 455-461.
Black, R. & Liegeois, J.P. (1993). Cratons, Mobile Belts, Alkaline Rocks and Continential Lithospheric Mantle: The Pan-African Testimony. Journal of the Geological Society, London, 150, 89-98.
Heikal et al. (2013, May). Lithostratigraphy, Deformation History, and Tectonic Evolution of the Basement Rocks, Republic of Yemen: An Overview. Arabian Journal of Geosciences, 7(5), 1-12.
Kroner, A. (2000). Pan African Plate Tectonics and It’s Repercussions on the Crust of Northeast Africa. Geologische Rundschau, 68(2), 565-583.
Nehlig et al. (2002). A Review of the Pan-African Evolution of the Arabian Shield. GeoArabia, 7(1), 103-124.
Study Document
...Egypt Keywords: corona virus, coronavirus, covid, covid-19
Abstract
The novel Coronavirus COVID-19 appeared in China in 2019, quickly having a much more serious impact than prior evolutions of the coronavirus. As it began to spread from Wuhan, the district in China where it originated, to other parts of China and to other countries, the world began to realize that the local epidemic could become a pandemic. Efforts to contain the spread were varied and had mixed results, but Coronavirus eventually hit the United States and began to spread locally. In this article, we describe what Coronavirus is, what COVID-19 is, where it originated, where it has spread, transmission rates, mortality, and efforts to contain the spread of the disease. Because this is a constantly evolving situation, this article should be used in conjunction with developing news to fully understand the issue.
Introduction
Almost everyone in the United States is aware that……
Centers for Disease Control and Prevention. “Coronavirus Disease 2019 (COVID-19): Key Facts.” CDC. 12 March 2020. https://www.cdc.gov/coronavirus/2019-ncov/symptoms-testing/share-facts.html?CDC_AA_refVal=https%3A%2F%2Fwww.cdc.gov%2Fcoronavirus%2F2019-ncov%2Fabout%2Fshare-facts.html . Accessed 16 March 2020.
Newey, S. and Gulland, A. “What Is Coronavirus, How Did It Start and Could the Outbreak Grow Bigger?” The Telegraph. 16 March 2020. https://www.telegraph.co.uk/news/2020/03/16/what-coronavirus-how-start-outbreak-pandemic-covid-19/ . Accessed 16 March 2020.
U.S. Food and Drug Administration. “Coronavirus 2019 (COVID-19) Frequently Asked Questions.” FDA. 2020. https://www.fda.gov/emergency-preparedness-and-response/mcm-issues/coronavirus-disease-2019-covid-19-frequently-asked-questions . Accessed 16 March 2020.
World Health Organization. “Coronavirus.” WHO. 2020. https://www.who.int/health-topics/coronavirus . Accessed 16 March 2020.
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