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The dark patches on the moon were once thought to be seas and are called maria (Latin for `seas`). These are not actual seas containing water but are plains formed by ancient volcanic eruptions on the lunar surface, lava.

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11y ago
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5mo ago

When ancient lava reached the moon and filled its craters, it formed dark, flat plains known as lunar maria. These maria were created by volcanic activity billions of years ago and are large, smooth areas visible on the moon's surface.

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Q: What formed when ancient lava reaches the moon and filled its craters?
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Related questions

Are lunar mares younger than the craters that sit in them?

Yes, lunar mares are younger than the craters that formed in them. Lunar mares are vast, flat areas filled with solidified lava flows, while craters are formed by impacts from meteoroids. The dark-colored mare areas are generally younger because they filled in older, pre-existing craters.


Did volcanic eruptions cause craters on the Moon?

No, the craters on the Moon were mostly formed by impacts from meteoroids and asteroids. Some craters on the Moon were formed by ancient volcanic activity, but the majority were caused by impacts.


What does the formation of a crater follow?

There are craters formed by asteroids crashing into Earth. There are craters formed by volcanic explosions. There are craters formed by collapses in the Earth's crust.


How are craters formed on moons or planets?

Craters are formed by impacts from objects from space, such as meteorites.


Why are four craters formed on the moon weekly?

Craters are formed when asteroids and comets collide with the lunar surface.


How were Uranus's craters formed?

Uranus does not have any craters. It has no solid surface.


What geological features are formed by craters as a result of impact?

Meteor craters.


Dark-colored, relatively flat regions of the moon's surface that were formed when interior lava filled large basins are called?

The dark-colored, relatively flat regions of the moon's surface that were formed when interior lava filled large basins are called lunar maria. These areas appear darker than the surrounding highlands due to their lower reflectivity and lack of craters. The lunar maria are thought to have formed from ancient volcanic activity on the moon.


What are the three main surface features on the moon?

The three main surface features on the moon are craters, mountains, and maria (large dark plains). Craters are formed by impacts from meteoroids, mountains are elevated areas caused by the moon's crust being compressed, and maria are low-lying plains formed by ancient volcanic activity.


What Dark relatively flat regions of the moon's surface that were formed when interior lava filled large basins are called?

Maria, also known as lunar seas, are the dark relatively flat regions of the moon's surface that were formed when interior lava filled large basins.


What are maria craters?

Craters are formed when space debris collides with a body such as a planet or a moon, material is ejected to form a large cavity on the surface. Maria is the name of the dark areas on the moons surface, originally thought to be seas, but is now known to be ancient lava plains.


What is formed by meteorites?

impact craters