"..comprises an..igneous basement from the Pre-Cambrian Era and a complex of early Palaeozoic rocks which are overlain by a mantle of limestones ...from the Cretaceous and Eocene Age..... The continental promontory on which Socotra is located separated from Africa some 36mya at the same time as the rifting which created the Gulf of Aden" (Nom File)Victoria Falls
(Zambian and Zimbabwean!) Gelasian
"Since the upliftiing of the Makdadikgadi Pan area some 2 mya the Zambesi.... has been cutting through the basalt .... and forming a series of retreating gorges" (AB)PS
- I am rather "uncomfortable" about using terms like "Gelasian" in this and many other examples. It and the other "age"/"stage" terms were at least originally stratigraphic terms and NO "stratigraphy" is involved in this (Vic Falls) case for instance. No one else seems to be using them in this context in any scientific papers i am coming across - Why not???. I fully understand the desire to split up the Pleistocene era but feel that an alternative approach like Early/mid/late would be better. See pages 48/9 of this document which I came across whilst looking into the periods to be used for Okovango, Victoria Falls and Mana Poolshttp://www.biodiversityfoundation.org/documents/Chap02_Geomorphology_whole.pdf
I would be happier if we could find some examples of the use of these terms in a geo-chronology sense by expert Geologists! We could just be demonstrating our ignorance of the matter!