source: It was thought that the debris thrown up by the collision filled the smaller craters.
target: Originally, it was thought that smaller craters were filled in with debris from the collision.
references: Originally, it was thought that smaller craters were filled in with debris from the collision. It was originally thought that the debris thrown up by the crash filled in the smaller craters. Originally people thought that the debris thrown up by the collision filled in the smaller craters. It was originally thought that the scattered remains of the collission filled the smaller circulare depressions in the ground. In the beginning, it was thought that the pieces thrown up by the crash filled in the smaller holes. It was originally thought that the debris thrown up by the collision filled in the smaller craters. It was originally thought that the debris thrown up by the collision filled in the smaller craters.