If by turning the coin left to right and the reverse is upside down on each turn, this is the way it should be. The 1989 Congress bicentennial Half Dollar was struck as Proof (S) and Uncirculated (D) and both have the same retail value of $9.00
No such thing as a "strike mark" but U.S. coins do have Mintmarks. For Morgan dollars, they are on the reverse just above the DO in DOLLAR.
normal reverse strike-slip
three kinds of faults are normal fault, reverse fault, and strike-slip fault.
normal fault reverse fault slip strike fault
normal fault, reverse fault, strike-slip fault,
The U.S. did not strike any silver dollars with that date. The only dollar-type coins issued that year were Trade Dollars. See http://www.numismedia.com/fmv/prices/trddlr/pricesgd.shtml for a price guide. If your coin does not have the words "Trade Dollar" on the reverse I'm afraid that it is a fantasy piece or possibly an outright counterfeit.
Neither. It is a strike-slip fault.
no it is a strike slip fault i had also had confusion on that.
reverse fault, strike slip fault, and normal fault
Reverse faultNormal faultStrike-slip fault
The reflection in water is inverted because light rays coming from an object above the water surface strike the water at an angle and are reflected according to the law of reflection. This reflection causes the image to appear upside down relative to the object.
The main direction of the stress on blocks of rock at normal faults, reverse faults and the strike slip faults usually happens at the weak areas.