<P> The lighter - coloured regions of the Moon are called terrae , or more commonly highlands , because they are higher than most maria . They have been radiometrically dated to having formed 4.4 billion years ago , and may represent plagioclase cumulates of the lunar magma ocean . In contrast to Earth , no major lunar mountains are believed to have formed as a result of tectonic events . </P>
<P> The lighter - coloured regions of the Moon are called terrae , or more commonly highlands , because they are higher than most maria . They have been radiometrically dated to having formed 4.4 billion years ago , and may represent plagioclase cumulates of the lunar magma ocean . In contrast to Earth , no major lunar mountains are believed to have formed as a result of tectonic events . </P>
what are the light areas on the moon called
what are the light areas on the moon called
terrae highlands
terrae highlands