What are lunar highlands?

Answer 1

The lunar highlands were formed about 4.5 billion years ago, they are the oldest features (or regions) on the moon. The maria were formed some 3.5 billion years ago, erasing and covering the 'highlands' in the regions they formed.

Answer 2

The lunar highlands were formed about 4.4 to 4.6 billion years ago by flotation of an early, feldspar-rich crust on a magma ocean that covered the Moon to a depth of many tens of kilometers or more.

Answer 3

When the Moon was in its molten stage 4.5 billion years ago, lighter aluminum-rich material floated to the surface and created what we know today as the Lunar Highlands. The heavier dark basalts sank toward the center of the Moon but later percolated upward through cracks and fissures that were opened up as a result of impacts that created the large basins. This basaltic material filled the "seas" and provides a dark contrast to the much lighter Highlands.

Answer 4

The Highlands are the oldest features of the moon and the maria are the youngest features.

Answer 5

How does lunar highlands form?

Answer 6

4.5 billion years