supercontinent

音標(biāo)發(fā)音

Russia stretches across much of the north of the supercontinent of Eurasia.
俄羅斯橫跨歐亞大陸北部的大部分地區(qū)。
The very first supercontinent was called Vaalbara and it started forming more than 3.6 billion years ago.
真正意義上的第一個超大陸名叫瓦爾巴拉，它從36億年前就開始形成了。
Many of us are familiar with the idea that the world's continents once fit snuggly together into one huge single supercontinent called Pangea.
我們之中的許多人熟知一個概唸：世界的幾片大陸曾經(jīng)緊緊靠在一起，組成了一個超大陸。我們稱之爲(wèi)泛古陸。

IGCP-597: Amalgamation and Breakup Pangaea: the Type Example of the Supercontinent Cycle.
UNESCO: EARTH SCIENCES FOR SOCIETY
Another benefit of this find is that it provides further evidence that dinosaurs evolved in the southern portion of Pangaea, the supercontinent that existed in the Triassic period.
FORBES: Scientists Discover The Earliest Known Dinosaur

a great landmass thought to have existed in the geological past and to have split into smaller landmasses, which drifted and formed the present continents