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Title: Geophysical investigations of the northern Red Sea, including a detailed survey of the adjacent Egyptian mainland, between 24°N and 26°N
Author: Gerdes, K. D.
Awarding Body: University College of Swansea
Current Institution: Swansea University
Date of Award: 1982
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The results of three geophysical surveys in the northern Red Sea are presented which consist of a detailed gravity and magnetic survey of the Egyptian coastal plain and hinterland between 24°N and 26°N; offshore geophysical surveys adjacent to the land survey, made available by the Phillips Petroleum and Union Oil Companies of Egypt and research cruise 10 of RRS SHACKLETON in 1979 to the northern Red Sea. CHAPTER 1 describes the plate tectonic setting of the region. CHAPTER 2 summarises the previous work in the Afro-Arabian Rift System and illustrates the present controversy concerning the nature of the lithosphere beneath the continental margins of the Red Sea and Gulf of Aden. CHAPTERS 3 and 4 describe the acquisition and reduction of the Egyptian land data and include a detailed discussion of the barometric methods used to obtain elevation estimates during the survey. In CHAPTER 5 the large isolated geophysical anomalies present in these data are interpreted. CHAPTER 6 describes the acquisition and reduction of the marine geophysical data from cruise 10 of RRS SHACKLETON in 1979. In CHAPTER 7 the preliminary interpretation of these data suggests that the northern Red Sea is underlain by attenuated continental crust crossed by ten major transverse trends. CHAPTER 8 describes the reduction and interpretation of a detailed gravity and magnetic survey centred over St. John's Island which illustrates that it is the limited topographic expression of a large ultramafic body. The results of chapters 7 and 8 illustrate the presence of a major fracture zone in this area which is also an important tectonic boundary. CHAPTER 9 summarises the main conclusions and discusses their relevance to the plate tectonic setting of the northern Red Sea in particular and the Red Sea in general. A number of suggestions for further work are made.
Supervisor: Not available Sponsor: Not available
Qualification Name: Thesis (Ph.D.) Qualification Level: Doctoral
EThOS ID:  DOI: Not available