Active volcanic activity helped create the moon's surface minerology as recently as 2 billion years ago, leaving an iron-rich and high-calcium surface of basalts geographically younger than the lunar ...

Undersea columns of basalt have been found near an uninhabited islet off Penghu County and are believed by the finder to be the only such formations in the world. Jeng Ming-hsiou (鄭明修), a researcher ...