Earth Sciences

Volume 4, Issue 2, April 2015

  • Calcareous Nannofossils Boistratigraphy and Paleoecology of the Late Paleocene/Early Eocene of Wadi Nukhul, Westcentral Sinai, Egypt

    Khaled A. Al Wosabi

    Issue: Volume 4, Issue 2, April 2015
    Pages: 59-71
    Received: 24 February 2015
    Accepted: 9 March 2015
    Published: 14 March 2015
    Abstract: The calcareous nannofossil biozones NP7/8 through NP12 were identified from the Esna and base of the Thebes formations at Wadi Nukhul, westcentral Sinai. The Subzone NP9a spans the lower part of Esna Formation. The Zone NP10 is easily differentiated into 4 subzones (a-d). The NP9/NP10 zonal boundary can be identified at the level of increase freque... Show More
  • Glaciers Retreat and Climate Change Effect During the Last One Century in the Mestiachala River Basin, Caucasus Mountains, Georgia

    Levan G. Tielidze, Nino Lomidze, Lasha Asanidze

    Issue: Volume 4, Issue 2, April 2015
    Pages: 72-79
    Received: 14 March 2015
    Accepted: 25 March 2015
    Published: 31 March 2015
    Abstract: The dynamics of glaciers of Mestiachala river basin for the last century is revised in the paper. The percentage shrinking of areas of compound valley glaciers with the relation of air temperature is given. The retreat of largest glacier of Georgia Lekhziri and shrinking of its area is revised according to the years. The height gradient and correla... Show More
  • Global Mid-Ocean Ridges Mantle Tomography Profiles

    Desiderius Cyril Patrick Masalu

    Issue: Volume 4, Issue 2, April 2015
    Pages: 80-88
    Received: 12 March 2015
    Accepted: 31 March 2015
    Published: 10 April 2015
    Abstract: We have studied mantle tomography profiles of global mid-ocean ridges to investigate their depth of origin and other characteristics. The Mid-Atlantic and the South West Indian Ridges are deep rooted ridges that extend as far down in the mantle to 250-300 km. The Central Indian Ridge, South East Indian Ridge, Antarctica Nazca, Pacific Antarctica, P... Show More