Cambrian

音標(biāo)發(fā)音

Dengta marine built gypsum deposits occurred in Mantou Jianchang Formations, Lower Cambrian.
燈塔海積石膏礦床賦存于下寒武統(tǒng)饅頭組—堿廠組中.
The Pre - cambrian alumino - siliceous slate is the host rock of antimony deposit inHunan.
湖南前寒武系的硅鋁質(zhì)板巖是銻礦主要賦礦巖性.
The Cambrian - Ordovician strata in Luxi Block are very continuous and well exposed.
魯西地塊的寒武 - 奧陶紀(jì)地層出露連續(xù),露頭較好.
Dengta marine built gypsum deposits occurred in Mantou Jianchang Formations, Lower Cambrian.
燈塔海積石膏礦床賦存于下寒武統(tǒng)饅頭組—堿廠組中.
The Pre - cambrian alumino - siliceous slate is the host rock of antimony deposit inHunan.
湖南前寒武系的硅鋁質(zhì)板巖是銻礦主要賦礦巖性.

from or referring to the period of time between about 543 and 490 million years ago, in which many different types of invertebrates (= animals with no back bone) first appeared

of, denoting, or formed in the first 65 million years of the Palaeozoic era, during which marine invertebrates, esp trilobites, flourished
the Cambrian period or rock system

寒武系
At the same time,the bituminous dikes also indicate the favorable foregrounds for exploration of Sinian-Cambrian oilfield in the east margin of fold belt of Longmen Mountain.
同時,礦山梁和碾子壩分布的瀝青脈也指示在龍門山褶皺帶東緣找尋我國最古老的震旦—寒武系油田的良好前景。
寒武紀(jì)
A large scale carbonate platform is drowned from Sinian to Cambrian in Guizhou and its adjacent areas, which leads to Niutitang Formation sedimented abroad.
震旦紀(jì)與寒武紀(jì)過渡時期的大規(guī)模碳酸鹽巖臺地淹沒事件,造成了廣泛分布的牛蹄塘組黑色頁巖系,在貴州及鄰區(qū)牛蹄塘組的深水相巖石的廣泛分布代表了“相的持續(xù)性現(xiàn)象”。
生物學(xué)
寒武紀(jì)
The small shelly fossils appeared and evolved in Maidiping Formation. The study area located in the west margin of Yangtze platform in early Cambrian.
研究區(qū)位于揚(yáng)子地臺西緣,寒武紀(jì)初處于低緯度的熱帶、亞熱帶,當(dāng)時受各種機(jī)制激發(fā)的上升洋流把磷元素從深部帶入到古陸的邊緣淺海部位,是研究區(qū)膠磷礦形成和生物繁盛的前提。
寒武系