The Tertiarystratum of Iran basin has thickly and broadly deposited great carbonate sediments.
伊朗盆地第三系地层沉积了巨厚的碳酸盐岩,且分布广泛。
2
The rivers running across large area with emergence of Mesozoic and tertiarystratum usually have high sediment concentration and large modulus of erosion.
穿过有大面积中生界和第三系地层出露地区的河流,其含沙量高,侵蚀模数大。
3
Sediment cover consists of Trias, Jurassic, Tertiary and Qaternary, but Jurassic is the mainly exploited stratum.