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G. M. Fairer

Publications and source records attributed to G. M. Fairer.

16 recordsLinked to original sources
USGS1983

Reconnaissance geology of the Jabal Khatam Quadrangle, sheet 26/39 D, Kingdom of Saudi Arabia

The Jabal Khatam quadrangle encompasses an area of about 2,725 km 2 on the edge of the Precambrian shield in northwestern Saudi Arabia, between lat 26°00' and 26 ° 30' N. and long 39 ° 30' and 40 ° 00' E. The southern one-third and northeastern corner of the area are covered by Tertiary and Quaternary basalt flows of Harrat Khaybar and Harrat Ithnayn. In one small area on its northern edge, Harrat Khaybar is composed of Tertiary rhyolitic tuff and trachyte. Most of the northern one-third and eastern part of the quadrangle are covered by Paleozoic Siq Sandstone. The remainder of the quadrangle is composed of trachyandesite flows, agglomerate, graywacke, and sparse marble of the Hulayfah group and intrusive rocks that range in composition from alkali-feldspar granite to diabase. No deposits with economic potential were found. However, the geothermal potential of the quadrangle warrants further investigation.

Open-File Report↗
USGS1983

Reconnaissance geology of the Ishash Quadrangle, sheet 26/39C, Kingdom of Saudi Arabia

The Ishash quadrangle occupies an area of about 2,725 km2 on the northern border of the Precambrian shield in north-central Saudi Arabia between lat 26?00' and 26?30' N. and long 39?00' and 39?30' E. The northern quarter is covered by Cambrian Siq Sandstone and the southeastern corner is covered by Quaternary to Tertiary basalt. The remainder of the area is underlain by trachyandesite, andesite, and metasedimentary rocks of the lower part of the Hulayfah group and rhyolitic flows and ruffs of the upper part of the Hulayfah group. These rocks have been intruded by rocks that range in composition from gabbro to alkali-feldspar granite. Two small outcrops of Tertiary rhyolite are present in the quadrangle. The predominant structures are folds and faults initiated by the formation of the caldera in the southwestern part of the area. The northerly trending structures were reactivated during the late Precambrian Najd orogenic event and again in the Tertiary during the opening of the Red Sea. No mineral deposits of economic importance were found in the quadrangle.

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