Tag Archives: channels

Megaflood carved a valley in a week

Morella Crater is an ancient impact scar 78 kilometers (49 miles) across that sits barely 5 km (3 mi) away from the southern edge of the large canyon, Ganges Chasma. Roughly 3 billion years ago,  groundwater filled Morella Crater with … Continue reading

Posted in Reports | Tagged , , , , , , , , , | Comments Off

Cloudburst rains needed to make Mars valley networks

In many regions, Mars has branching networks of valleys and channels that were carved by flowing water. A great many previous studies have tried to date when they were active and for how long, while others have looked in detail … Continue reading

Posted in Reports | Tagged , , , , , | Comments Off