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- W1514093040 abstract "This chapter summarises the geodynamic evolution of southwestern Africa as recorded in the various tectono-stratigraphic units of the Damara, Kaoko and Gariep belts as well as the Saldania Belt. Successive subduction-related closure of the Adamastor Ocean between the African continental fragments and the Rio de la Plata Craton began in the north between 655 and 625 Ma in the Coastal Terrane of the Kaoko Belt and between 625 and 580 Ma in the Araçuaí and Ribeira belts as well as the Dom Feliciano Belt. At the same time, the southern Adamastor Ocean (Gariep Basin) would have been still opening. Alternatively, the Gariep Basin at that stage could be explained as a back-arc basin behind the Dom Feliciano arc. Arc-continent collision in the Kaoko Belt occurred prior to 580 Ma with peak metamorphism having been reached at 580–570 Ma. Accretion of oceanic crust took place at about the same time in the Gariep Belt, while subduction-related closure of the Khomas Ocean was achieved at 560–550 Ma. Subsequently, the southern Adamastor Ocean was closed at 550–540 Ma, at the same time as collisional deformation, metamorphism and widespread magmatism in the Damara and Lufilian belts. This was followed by post-orogenic A-type granite emplacement, continued cooling and exhumation through 480 Ma. In contrast to the above, the southern branch of the Saldania Belt is an accretionary orogen along the margin of the Kalahari Craton and most likely represents a continuation of the 520–500 Ma Ross-Delamerian Orogen." @default.
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- W1514093040 date "2009-01-01" @default.
- W1514093040 modified "2023-10-14" @default.
- W1514093040 title "Chapter 5.8 Geodynamic Synthesis of the Damara Orogen Sensu Lato" @default.
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- W1514093040 doi "https://doi.org/10.1016/s0166-2635(09)01617-x" @default.
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