基本解释[地球科學]洋島玄武巖专业释义地球科學洋島玄武巖The Early Jurassic alkali basalts from the Riajunlama region probably represent the oceanic island basalt within the plate of the Bangong-Nujiang ocean.早侏羅世堿性玄武巖代表了班公湖-怒江洋內的板內洋島玄武巖。