Sentences with phrase «small craters surrounding»

Secondary craters form when big chunks of rock blasted into the air during a large impact fall back to the surface, leaving a smattering of small craters surrounding the main crater.

Not exact matches

The basin is surrounded by grooves and gashes, large enough to be seen with even small telescopes from Earth, created by rocks blasted out of the crater when it was formed.

The impact is thought to have occurred between 2008 and 2014, but NASA's High - Resolution Imaging Science Experiment (HiRISE) camera revealed in 2016 that two large impact craters were surrounded by up to 30 smaller craters.

In contrast, the smaller dark spots (which can appear as gray, brown, or red) may be the remains of low - speed, carbon - rich asteroids that splattered such» deposits» onto Vesta's surface, or they may be the result of higher - speed asteroid that melted and darkened volcanic basaltic crust on crater walls and floors, or on surrounding hills and ridges (NASA DAWN news release).

Includes two full - day island visits to North Seymour, a small flat island surrounded by low cliffs, South Plaza, an uplifted slab of sea floor or Bartolomé, characterised by a high volcanic crater.

Days 9 & 10 Includes two full - day island visits to North Seymour, a small flat island surrounded by low cliffs, South Plaza, an uplifted slab of sea floor or Bartolomé, characterised by a high volcanic crater.

Day 6 Full - day island visit to either North Seymour, a small flat island surrounded by low cliffs, South Plaza, an uplifted slab of sea floor, Bartolomé, characterised by a high volcanic crater or Santa Fe, one of the oldest islands of the archipelago.

Just one of these craters (shown above) hosted about 20 smaller «baby craters» surrounding it.