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Determining the distance along the earth’s surface from a seismic statiopn to the epicenter of an earthquake is based on the difference in arrival times between

A sedimentary rock that often contains large amounts of oil but is not a reservoir rock is

A longshore current will deposit sediment when

What type of unconformity appears between a tilted sedimentary strata and a horizontal overlying layer?

Of the following, the best petroleum reservoir rock would be

What is the luster ? Streak = dark gray hardness = 2.5 

What is the luster ? Streak = reddish-brown Hardness = 1.5-6

What is the name of this specimen ? This sample taste salty Hardness = 2.5    

What is the name of this specimen? (Note: The specimen reacts to acid)  Streak = white Hardness = 3 

What is the name of this specimen ? Streak= white to gray hardness = 2.5-3