In
geology
Geology () is a branch of natural science concerned with Earth and other astronomical objects, the features or rocks of which it is composed, and the processes by which they change over time. Modern geology significantly overlaps all other Ea ...
a collage is a
tectonostratigraphic unit characterized by its heterogeneity in terms of its
lithology, rock ages, or both. The term is usually applied to
Precambrian tectonostratigraphic units. Collages form by
plate tectonic processes like
accretion and
continental collision.
Geology
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