Metamorphic differentiation in some Lewisian rocks of North West Scotland     

T. S. Ghaly 《Contributions to Mineralogy and Petrology》1969,22(4):276-289

The Lewisian rocks in the area studied show a gradation from hornblende-felspar schists to striped and banded schists and gneisses to hornblendic and felsic lenses and pods. The structural elements together with the chemical, mineralogical and textural variations indicate that the different types of rocks were formed by metamorphic differentiation. The process of metamorphic differentiation included different forms of chemical and mechanical differentiation.In the area between Loch Shieldaig and Loch Bràigh Horrisdale, Gairloch, Ross-shire.  相似文献   

Pharaonic necrostratigraphy: a review of geological and archaeological studies in the Theban Necropolis, Luxor, West Bank, Egypt     

Marie-Pierre Aubry  William A. Berggren  Christian Dupuis  Holeil Ghaly  David Ward  Chris King  Robert W. O'B. Knox  Khaled Ouda  Moustafa Youssef  Wael Fathi Galal 《地学学报》2009,21(4):237-256

We present a review of archaeological and geological studies on the West Bank as a basis for discussing the geological setting of the tombs and geologically related problems with a view to providing archaeologists with a framework in which to conduct their investigations on the restoration, preservation and management of the antique monuments. Whereas the geology of the Upper Nile Valley appears to be deceptively simple, the lithological succession is vertically variable, and we have recognized and defined several new lithological units within the upper Esna Shale Formation. We have been able to delineate lithological (shale/limestone) contacts in several tombs and observed that the main chambers in some were excavated below the Esna Shale in the Tarawan Chalk Formation. We have been able to document changing dip in the strata (warping) in several tombs, and to delineate two major orientations of fractures in the field. Investigations behind the Temple of Hatshepsut, in the Valley of the Kings and around Deir El Medina have revealed four broad regional structures. We confirm that the hills located near the Nile Valley, such as Sheik Abdel Qurna, do not belong to the tabular structure of the Theban Mountain, but are discrete displaced blocks including the Thebes Limestone, as supported by Google Earth photographs.  相似文献