After the glaciers melted, the land dried out and vertical cracks began to form or expand in the deposits.
(the glaciers; melted; ) (the land; dried out; T:After the glaciers melted) (vertical cracks; began; ) (vertical cracks; to form; ) (vertical cracks; to expand; L:in the deposits)
the glaciers the land vertical cracks vertical cracks vertical cracks
melted dried out began to form to expand
T:After the glaciers melted
L:in the deposits