Abstract
Through core observation and description, whole rock chemical analysis, thin section identification and logging identification method, The volcanic rock of this area is mainly basalt, trachyte and tuff, three major categories, further divided into 10 subclasses. Basalt intergranular-intersertal structure, the main minerals are plagioclase , sodium feldspar and mafic pyroxene , belong to alkaline series,infrasonic wave, low natural gamma, high resistance, high density; Trachyte ,typical rough structure, high content of feldspar, the negative anomaly of naturalelectric potential, high resistance, high natural gamma measurement, infrasonic wave;Tuff, tuffaceous texture, massive structure, rock is composed of lithic, vitric, crystal and volcanic ash, ingredients to alkali feldspar, biotite, plagioclase etc, low natural gamma, low resistivity , low density.
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