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.
My annual fees are collected upon the anniversary of my membership with that card. I'd imagine there are some that follow a calendar year and either provide a grace period or prorate the fee. As the other answer states, it really varies based on the card and issuer.