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how are domes formed on the moon ?

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universeseeker

Skilled Investigator
I know how craters are formed on the moon surface , but I was wondering how domes are formed ?
Anyone have any idea ?
I want to use this example from the apollo17 mission

AS15-93-12644

Lunar domes are small mounds, often with summit pits, found mostly on the maria. They are small volcanic shield volcanoes, such as those in Idaho, Iceland and other places on Earth. Lunar domes are typically 5-15 km in diameter although very large megadomes reach up to 70 km in width. All domes are very low compared to their diameters with slopes typically between 1-3°. The very best data on domes comes from from studies by the Lunar Geologic Research Group (GLR) - here is their Consolidated Catalog of Lunar Domes (note: this is a small subset of the 2005 GLR Catalog, with some additions, for which definitive data has been published).

This is the explanation one Wikipedia-Moon , but they are very low , so how does the high ones get formed ?
 
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