middle triassic series

基本解釋

Source beds are turbidite of middle Triassic series.
礦源層為中三疊統(tǒng)濁積巖。
There are two series of volcanic rocks, the middle Triassic Pantian'ge formation and the late Triassic Chuiyibi formation, in the northwestern Yunnan collisional orogenic zone.
滇西北地區(qū)碰撞造山帶中出露兩個火山巖系，即中三疊世攀天閣組和晚三疊世崔依比組。
The stratiform and strata-bound iron ore deposits in the Middle Triassic series in the lower reaches of the Yangzi River were formerly considered as simple contact-metasomatic ore deposits.
長江中下游中三迭統(tǒng)層狀—層控型鐵礦床，曾被傳統(tǒng)地視為典型的接觸交代型礦床。