PETROGRAPHICAL AND GEOCHEMICAL FEATURES OF VOLCANIC FRAGMENTS OF THE WADI AL-BATIN IN IRAQ

Abstract

The volcanic rocks of the Wadi Al-Batin, in the form of sand-pebble fragments form large-scale sedimentary deposits. Delta of this valley - an «alluvial fan» - covers most of Kuwait and southeast of Iraq. With the general study of these rocks, their geochemical features remain unclear. In this paper, a detailed analysis of the chemical and component composition of the rocks of Wadi Al-Batin volcanic fragments is given. It is established that reddish-brown and dark-colored rocks of volcanic rock are widely distributed in the territory of Iraq. Samples of reddish color are mainly represented by rhyolites, while dark ones represent trachyte, dacite and shale. Rheolites are typical examples of calc-alkaline perglinose volcanic rock and exhibit geochemical characteristics of anorogenic intraplate media. On the other hand, tra-chyte and dacite are tholeiitic perglinozems and have geochemical characteristics of oro-genic arc type. It has been confirmed that the wreckage of Wadi Al-Batin rocks originated from the highlands of western and north-western Saudi Arabia, where indigenous rhyolites are developed, which are in many respects similar to the rhyolites of Wadi Al-Batin.