GEOLOGY

Publication Record

Abdel-Rahman, A. (PL), and M. El-Kibbi. 2001. Anorogenic magmatism: Chemical evolution of the Mount El-Sibai A-type complex (Egypt), and implications for the origin of within-plate felsic magmas. Geological Magazine 138:67–85.

Abdel-Rahman, A. (PL), and P. S. Kumarapeli. 1999. Geochemistry and petrogenesis of the Tibbit Hill metavolcanic suite of the Appalachian fold belt, Quebec-Vermont: A plume-related and fractionated assemblage. American Journal of Science 299:210–237.

Frisch, W. (PL), and A. Abdel-Rahman. 1999. The Wadi Dib ring complex, eastern Egypt: A mantlederived A-type suite. Mineralogy and Petrology 65:249–275.

Khair, K. 2001. The geomorphology and seismicity of the Roum fault as one of the active branches of the Dead Sea fault in Lebanon. Journal of Geophysical Research 106:4233–4245.

Khair, K., F. Gomez*, M. Meghraoui*, A. N. Darkal*, R. Sbeinati*, R. Darawcheh*, C. Tabet*, M. Khawlie*, M. Charabe*, and M. Barazangi*. 2001. Coseismic displacements along the Serghaya fault: An active branch of the Dead Sea fault system in Syria and Lebanon. Journal of the Geological Society.

Khair, K., and A. W. Ibrahim*. 1999. The velocity of elastic P waves in unconsolidated material under low pressures. Journal of Environmental and Engineering Geophysics.

Khair, K., G. F. Karakaisis*, and E. E. Papadimitriou*. 2000. Seismic zonation of the Dead Sea transform fault area. Annali di Geofisic 43:61–79.

Khair, K., and G. Tsokas*. 1999. Nature of the levantine (eastern Mediterranean) crust by multiple source Werner deconvolution estimates of Bouguer gravity anomalies. Journal of Geophysical Research 104:25, 469–478.

Mokhtari Fard, A. Feburary 2001. Editorial: Global response of the fluvial depositional systems to rapid climate change, an introduction. Global and Planetary Change 28 (1-4): ix–xii.

———. February 2001. Morphology of subglacial conduit deposits: control by bedrock topography, discharge flow variation, or both? A cautionary case study; Axelsberg, Nynäshamn, south central Sweden. Global and planetary Change 28 (1-4): 145–161.

Mokhtari Fard, A., and B Ringberg. February 2001. Sedimentological evidence of a meandering Younger Dryas subglacial conduit: Horn, SE central Sweden. Global and Planetary Change 28 (1-4): 255–265.

Abstracts, Conferences, and Proceedings

Abdel-Rahman, A. May 2000. Chemical evolution and petrogenesis of the Moly May pluton and its host granitic complex, northwestern British Columbia. Geological Association of Canada - Mineralogical Association of Canada (GeoScience Canada 2000), 25: 331, Calgary, Alberta, Canada.

———. May 2000. Nature and origin of Mount El-Sibai anorogenic complex, eastern Egypt. Geological Association of Canada - Mineralogical Association of Canada (GeoScience Canada 2000), 25:332, Calgary, Alberta, Canada.

———. May 2000. Pliocene alkali basaltic volcanism in northern Lebanon. Geological Association of Canada - Mineralogical Association of Canada (GeoScience Canada 2000), 25: 330, Calgary, Alberta, Canada.

———. May 2001. Geochemical characterization of the Lebanese carbonate stratigraphic sequence. Eos, Transactions, American Geophysical Union, 82 (20), S434, Boston, Massachusetts, USA.

———. May 2001. Geochemistry, Sr-Nd isotopes and petrogenesis of Mesozoic basalts from Lebanon. Eos, Transactions, American Geophysical Union, 82 (20), S429, Boston, Massachusetts, USA.

Khair, K. October 1999. The Arab water demand projections. The Second Annual Water Conference and Exhibition: Middle East Water Issues and Solutions, Beirut, Lebanon.

———. January 2000. Historical earthquakes in Lebanon. National Workshop on Seismic Hazards in Lebanon and the Preparedness of Lebanese Society to Confront Their Impacts, Beirut, Lebanon.

Khair, K., F. Gomez*, M. Meghraoui *, A. N. Darkal*, C. Tabet*, M. Khawlie*, R. Sbainati, R. Darawcheh, and M. Barazangi. December 1999. Coseismic displacements along the Serghaya fault: An active branch of the Dead Sea fault system in Syria and Lebanon. American Geophysical Union (AGU) 1999 Fall Meeting, San Francisco, California, USA.

Mokhtari Fard, A. November 2000. Subglacial initiation process of the final drainage of Lake Agassiz. Geological Society of America, 2000 Annual Meeting, Proceedings Vol. 154, Reno, Nevada, USA.

———. February 2001. Subglacial lakes in a planetary perspective; American Association for the Advancement of Science (AAAS) annual meeting, Proceedings Vol. B13, San Francisco, USA.

Graduate Theses and Projects

Harb, M. H. June 2001. Petrology and geochemistry of the mafic unit of the Baer -Bassit ophiolitic complex northwestern Syria. A. Abdel-Rahman.

Hawi, J. S. June 2000. Calcareous nannofossil biostratigraphy of the Ech-Chaqaa section, Chekka (N. Lebanon). A. Abdel-Rahman.

Kallas, L. M. June 2001. Geochemical evolution of upper Tertiary basalts from southern Lebanon. A. Abdel-Rahman.

Nader, F. H. February 2000. Petrographic and geochemical characterization of the Jurassic-Cretaceous carbonate sequence of the Nahr Ibrahim region, Lebanon. A. Abdel-Rahman.

Nassar, Ph. E. October 1999. Geochemistry of Pliocene basalts from the Akkar area, Lebanon. A. Abdel-Rahman.

Nemer, T. S. October 1999. The Roum Fault: Extent and associated structures. A. Abdel-Rahman and K. Khair.

Noubani, Kh. Y. June 2000. Petrology and geochemistry of some Mesozoic basalts from Lebanon. A. Abdel-Rahman.

Research Projects

Isotopic and petrogenetic evolution of Jurassic mafic lavas from Lebanon

Volcanism associated with Mesozoic rifting during the disintegration of Pangaea occurred along a passive continental margin.  This has produced the Middle East Mesozoic alkali basaltic province, which includes the Lebanese Jurassic basalts.  Sr-Nd isotopic data indicate that this basaltic suite is typical of plume-related OIB-HIMU lavas.  Petrogenetic modelling shows that the alkali basaltic magma was produced by a very small degree of partial melting (1.5%) of a garnet lherzolite primitive mantle source.  One paper has been submitted for publication. Abdel-Rahman, A.

Supported by URB
Completed or in progress at AUB

Mineralogy, age and origin of Mount Noslah A-type granitic complex, eastern Egypt

The Pan-African shield exposed in eastern Egypt was invaded by a number of alkaline granitic complexes during a phase of cooling, relaxation, and associated extensional tectonics.  Mount Noslah, a prominant topographic feature in the region, was emplaced along a shear zone around 600 Ma ago.  The study focuses on the use of mineralogy, Sr-Nd isotopes, major- and trace elements, as well as rare-earth elements to characterize this complex, to interpret its source and evolution, as well as its rare-metal potentials.  Work in progress. Abdel-Rahman, A.

Supported by URB
Completed or in progress at AUB

Peraluminous magmatism and molybdenite mineralization in northwestern British Columbia

Molybdinite mineralization and peraluminous magmatism in the Canadian Cordillera, and its relation to transtensional tectonics and shear heating have been the focus of this study.  Using field, mineralogical and petrological data, the Moly May pluton has been carefully characterized.  The data have been used to determine the source of magmatism.  A high degree (about 60%) of melting of metasedimentary rocks at depth has produced Al-rich granitic melts. The role of fractional crystallization and hydrothermal fluids in concentrating and depositing molybdenite minerals has been carefully investigated.  One paper has been accepted for publication in the Canadian Mineralogist. Abdel-Rahman, A.

Supported by URB
Completed or in progress at AUB

Pliocene volcanism in southern Lebanon

Using mineralogical, chemical, and isotopic data, we aim to determine the petrogenesis and magmatic evolution of the Pliocene alkali basaltic suite of southern Lebanon.  Mantle source materials, depth of melt segregation, and the mantle plume-volcanism connection are currently being investigated.  An examination of the connection between left-lateral strike-slip fault movements (or transform) along the Dead Sea-Yammouneh plate boundary, and volcanism, possibly in a trans-tensional tectonic regime, may shed light on the origin of pliocene volcanism in Lebanon. Abdel-Rahman, A. (PL), and L. Kallas.

Supported by URB
Completed or in progress at AUB

Chemical characterization of the Lebanese carbonate crustal segment

A detailed study on the Jurassic-Cretaceous carbonate units of Lebanon, exposed in the Nahr-Ibrahim - Chekka area, included most of the units that make up the Lebanese upper crustal segment.  In this first chemical investigation on the stratigraphic units of Lebanon, the behavior and distribution of the various elements, including the rare earth elements in these units, and the processes that controlled elemental abundances, provides an insight into the nature of the various depositional environments.  One paper has been accepted for publication in Geological Journal. Abdel-Rahman, A. (PL), and F. Nader.

Supported by URB
Completed or in progress at AUB

Paleoclimatic studies of caves in Lebanon

Work in progress. Mokhtari Fard, A.

Supported by URB

Completed or in progress at AUB

Quaternary Sedimentology of Subglacial Environments of the Stockholm Area

Two papers have been submitted for publication. Mokhtari Fard, A.

Supported by URB

Completed or in progress at AUB

Sedimentological investigations of glacial deposits in NE Poland

One paper has been submitted for publication. Work in progress. Mokhtari Fard, A.

Supported by University of Sosnovic, Poland

Completed or in progress at AUB

The geomorphology and seismisity of the Roum fault area

The seismicity and Bouguer gravity anamoly data are integrated with the geomorphoology and other geological aspects in the Roum fault and its northern extension. Khair, K.

Completed or in progress at AUB

Regional time and magnitude predictable models and seismic hazard-zoning of the Eastern Mediterranean region

The original and secondary sources of data on historical earthquakes have been reviewed, with an analysis of the discrepancies related to occurrence time, magnitude, and epicentral location of these earthquakes.  The Dead Sea fault zone has been sub-divided into five segments with different seismicities. Khair, K., G. F. Karakaisis*, and E. E. Papadimitriou*.

Supported by URB
Completed or in progress at AUB and Aristotelian University

Tectonic and environmental hazard mapping of the northern segment of the Dead Sea fault system using a DEM from ERS tandem mission SAR data

The study area is located along the northern segment of the Dead Sea fault, a major continental strike-slip fault with a proven history of producing large earthquakes.  High-resolution digital elevation model (DEM) is produced, using established interferometric ERS-processing methods.  The DEM is used to map potential regions of slope instabilities; to carefully delineate faults and their related earthquake hazards; and to mark water-shed boundaries and flood zones.  This research is a collaborative team effort between scientists from Lebanon, Syria, and the U.S. Khair, K., M. Khawlie*, C. Tabet*, A. N. Darkal*, M. Barazangi*, and F. Gomez*.

Supported by European Space Agency
Completed or in progress at LNCSR, AUB, and Cornell University