So too the geologist does well to regard granite as a compound of quartz , felspar , and mica .
又如地质学家认花岗石是由石英、肉色石、金星石合成的,也是很对的。
Science courses are especially important but math , writing , and other disciplines are used by every geologist during every working day .
自然科学课程是尤为重要的,除此之外数学、写作和其他学科是每个地质学家每天工作所需的。
Scientists have proposed several hypotheses for the climate shift that struck east africa , said peter demenocal , a marine geologist and geochemist at columbia university .