Abstract: Alkaline basaltic rocks of Quaternary age are dominant in the vicinity of Kula town in the Manisaprovince in Western Anatolia (Turkey). Tliese volcanics are represented by three distinct stages of volcanic activity. Thefirst stage forms I, I m. y. old flood basalts. The last stage occured about 20.000 years ago and are of cinder and spattercones, "aa" type lava flows, tuffs and tephras. "Base Surge" type bed forms have been observed around some maarvolcanoes of second stage and pirimitive human footprints are observed in third stage tuffs. Kula alkali volcanics arelocated within the Western Turkey Graben System which was formed as a result of the Aegean extensional tectonicregime. Abundant mantle xenoliths were brought up by the eruptions of the second and third volcanic activity periods.These xenoliths consist of olivine + kaersutite + apatite + cpx ± phlogopite ± sphene indicating modal metasomatismof the Subcontinental lithosphere. Strontium isotopic ranges for Kula basalts are 87 Sr/86 Sr= 0,7020 - 0,7035.According to petrochemical investigations there is no chemical difference between the lavas of all three stages and all thelavas are more alkaline. They derived from an alkali olivine basaltic magma and have a mantle origin. The lavas arepartly sodic and partly polassic. Their potassium content increase from first to third stage. The younger lavas are morepotassic then the old ones. Noble gas and helium isotopic composition in gas samples from the Kula volcanic provincewere measured and nearly mantle-derived helium was found in all the samples. The highest 3He/4He ratio was3,92x10*6. Volatile gasss including helium released from mantle or diapiric magma interact chemically with marinecarbonate in the crust and evolved carbon dioxide and radiogenic helium dilute the original magmatic gas. Therefore, it ispossible that Kula volcanism will be re-active and new alkali basaltic lavas will be formed in the future.