Block mountains are caused by faults in the crust: a plane where rocks have moved past each other. When rocks on one side of a fault rise relative to the other, it can form a mountain. The uplifted blocks are block mountains or horsts. The intervening dropped blocks are termed graben: these can be small or form extensive rift valley systems.
â The annual fee of the credit card was nothing, so the individual committed to paying the card off each month, and enjoyed the card.
In fact, the annual fee is billed in advance, and cardholders are usually able to close their accounts and receive a credit for the fee paid. For example, Citi allows cardholders close their accounts and receive a credit within 37 days of their annual fee being billed.