Central peak crater c.
Flat floored crater example.
The larger post heavy bombardment fresh craters are shown by x.
Find examples of the following.
Over the next 300 000 years the wind gradually filled it with sand and today the crater floor is 60 meters 200 feet below the rim which rises 25 meters above the surrounding flat desert land.
An excellent example of a maar is zuni salt lake in new mexico a shallow saline lake that occupies a flat floored crater about 6 500 feet across and 400 feet deep.
Small numbers of iron meteorites have been found in the vicinity of the crater.
Lofn is a large relatively young impact crater on jupiter s galilean satellite callisto it was identified in 1997 and named after the goddess of marriage in norse mythology located near the south pole of this moon lofn is classified as a flat floored or anomalous dome impact crater it is superimposed on adlinda multilayer structure obscuring about 30 of it.
Flat floored craters occur for two reasons.
Smooth areas s are probably filled with wind or water transported sediment as the the flat floored crater f.
The crater still looks weird.
Its low rim is composed of loose pieces of basaltic lava and wall rocks sandstone shale limestone of the underlying diatreme as well as random chunks of.
Complex craters are characterized by a central uplift a flat floor and inward collapse around the rim see figure 3.
On earth the diameter of complex impact craters is larger to about 2 to 4 km grieve 1987.
The crater that was left was probably about 120 meters deep.
Such flat floors extend across the entire reach of the crater bottom or can be interrupted at the center by a central peak or peak ring.
This is an example of what s called impact melt when an asteroid or comet slams into the surface with so much energy it melts the material around it.
Complex craters start to form on the moon for diameters around 15 20 km e g howard 1974.
Such postimpact modification can include regolith transported down the crater walls and onto the floor infilling by aeolian or lacustrine material or infilling by lava unrelated to the impact process e g plato flooding of the crater by lavas e g schultz 1976a.
This is another close up of part of the first image in this section showing flat floored craters f smooth s and dissected d intercrater plains.
An excellent example of a maar is zuni salt lake in new mexico a shallow saline lake that occupies a flat floored crater about 6 500 ft 2 000 m across and 400 ft 120 m deep.
One variant of the floor morphology is a relatively flat more or less level floor.
Flat floored craters occur in complex craters or highly degraded or modified simple craters.
