Alphonsus
lunar crater
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feature of Moon
- In Moon: Effects of impacts and volcanism
…of the large old crater Alphonsus—are peppered with rimless eruption craters. Though the Moon shows both tension and compression features (low wrinkle ridges, usually near mare margins, may result from compression), it gives no evidence of having experienced the large, lateral motions of plate tectonics marked by faults in Earth’s…
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