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The origin of alkali basalts in eastern China has been the subject of considerable debate. Here we focus on the Wulanhada basalts located in the western block of North China Craton to provide new insights into recent deep mantle dynamics. The Wulanhada volcanic group has 30 volcanic cones with variable volumes, consisting of scoria cone (cinder cone+spatter cone) and lava. The Wulanhada volcanoes...
The Nuomin volcanic field (NM for short) in northern Greater Xing'An Mountains is dominated by Quaternary monogenetic eruptions, forming lava flows covering an area of about 600km 2 . The lavas range from tephrite and basanite to trachybasalts, with high K 2 O contents between 2.6wt.% and 4.3wt.%, and K 2 O/Na 2 O between 0.78 and 1.08. These NM lavas are generally...
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