Phrases with «ancient continent»

Sentences with «ancient continent»

  • Magnetic traces have long been used to calculate the latitudes, the north - south positions, of ancient continents. (discovermagazine.com)
  • These gems, brought to the surface by volcanic eruptions, were uncovered in five ancient continents by researchers over the course of more than 30 years. (livescience.com)
  • Researchers analyzed the levels of various trace elements in hundreds of samples of carbon - rich shales that had been deposited in oxygen - poor regions of the ocean surrounding ancient continents during the past 3.5 billion years. (sciencemag.org)
  • (see all sentences)
a b c d e f g h i j k l m n o p q r s t u v w x y z