The kettle bog was created when a large chunk of melting glacier settled in a sand and gravel deposit.
(The kettle bog; was created; T:when a large chunk of melting glacier settled in a sand and gravel deposit) (a large chunk of melting; glacier settled; L:in a sand and gravel deposit)
The kettle bog a large chunk of melting
was created glacier settled
T:when a large chunk of melting glacier settled in a sand and gravel deposit
L:in a sand and gravel deposit