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The detailed geochemical research indicates that the tholeiitic basalts from Ganlongtang-Longba ophiolitic m(?)lange exhibit distinctive geochemical characteristics of high TiO_2 and low K_2O,and depletion of light rare earth elements.They should be originated from a depleted asthenosphere mantle, belonging to ancient oceanic crust ophiolitic volcanic rock association.Compared with the Longba tholeiitic basalt,the Ganlongtang tholeiitic basalt shows more
The detailed geochemical research indicates that the tholeiitic basalts from Ganlongtang-Longba ophiolitic m (?) Lange exhibit distinctive geochemical characteristics of high TiO 2 and low K 2 O, and depletion of light rare earth elements. They should be originated from a depleted asthenosphere mantle, belonging to ancient oceanic crust ophiolitic volcanic rock association. Compared with the Longba tholeiitic basalt, the Ganlongtang tholeiitic basalt shows more