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16 March, 13:25

54. Which is characteristic of pillow basalts? a. form under water b. form under high pressure c. lens-shaped masses surrounded by chilled rinds d. a and c

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  1. 16 March, 15:00
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    a and c

    Explanation:

    Basalt pillows occur when the basalt flows into the sea and the hot lava's contact with the cold sea water, the thermal shock, shapes the basalta into a rounded (pillow-like) shape, cooling the surface while a mass of Basalt is kept inside. For this reason, we can say that basalt pillows are an underwater shape, characterized as lens-shaped masses surrounded by cooled shells.
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