 | Doebrich, Jeff L., Al-Jehani, Abdullah M., Siddiqui, Alim A., Hayes, Timothy S., Wooden, Joseph L., Johnson, Peter R. (2007) Geology and metallogeny of the Ar Rayn terrane, eastern Arabian shield: Evolution of a Neoproterozoic continental-margin arc during assembly of Gondwana within the East African orogen. Precambrian Research, 158 (1) 17-50 doi:10.1016/j.precamres.2007.04.003 | Journal (article/letter/editorial) | | African orogen Jeff L. Doebrich a,∗ , Abdullah M. Al-Jehani b , Alim A. Siddiqui b , Timothy S. Hayes...VA 20192, USA b Saudi Geological Survey, P.O. Box 54141, Jiddah 21514, Saudi Arabia c U.S. Geological...the west by the Ad Dawadimi terrane across the Al Amar fault zone (AAF), and is nonconformably overlain...intrusions. The layered rocks of the arc, the Al Amar group (>689 Ma to ∼625 Ma), consist of tholeiitic...form three distinct lithogeochemical groups: (1) low-Al trondhjemite-tonalite-granodiorite (TTG) of arc affinity |  | | Book (volume) | | KINGDOM OF SAUDI ARABIA KING ABDULAZIZ UNIVERSITY Mohammad O. Zubeir President Abdullah O. Nasseef...President INSTITUTE OF APPLIED GEOLOGY Ahmad M. S. Al-Shanti Dean I. A. G. BULLETIN No. 3 EVOLUTION...Proceedings of a Symposium convened by AHMAD M. S. AL-SHANTI Volume 2 Published for the INSTITUTE OF...KING ABDULAZIZ UNIVERSITY JEDDAH, KINGDOM OF SAUDI ARABIA by PERGAMON PRESS OXFORD • NEW YORK • TORONTO...3). Vol: 2 1. Geology - Near East - Congresses I. Al-Shanti, Ahmed II. Tahoun, SA III. Series 555.6 QE319 |  | | Journal (article/letter/editorial) | | mineral chemistry of a calcic skarn from Al-Madhiq, SW Saudi Arabia Zulfiqar Ahmed, Mustafa M. Hariri Department...Petroleum and Minerals, Box 5070, Dhahran-31261, Saudi Arabia Abstract A newly identified skarn occurrence...shield. It is exposed to the SE, E and NE of the Al-Madhiq town. The skarn attributes correspond to those...albite-oligoclase, scapolite), and retrograde (epidote, quartz, hornblende, calcite) assemblages. The pyroxenes...grothite, that may be analogous to the newly described Al-rich titanite from the low-pressure calc-silicate |
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