Flat Floored Craters

Due to the cratering process itself and due to postimpact modification.

Flat floored craters. Lalande a only 8 mi. 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. The deep bay flat floored crater is a nearly circular lake near the south end of reindeer lake. 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.

Simple craters are 10 miles in diameter or less. 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. Our model includes appropriate insolation cycles realistic crater shapes multiple scattering of sunlight and infrared radiation and depth and temperature dependent regolith. One variant of the floor morphology is a relatively flat more or less level floor.

Also known as maars tuff cones are shallow flat floored craters that scientists think formed as a result of a violent expansion of magmatic gas or steam according to the u s. Also called tuff cones maars are shallow flat floored craters that scientists interpret have formed above diatremes as a result of a violent expansion of magmatic gas or steam. Flat floored craters occur in complex craters or highly degraded or modified simple craters. They start with rounded floors then progress to a flat floor resulting from a cascade of boulders that have rolled down the interior walls and settled at the bottom.

In diameter located about 40 miles southwest of the crater lalande is a good example of a simple crater. Maars range in size from 200 to 6 500 feet across and from 30 to 650 feet deep and most are commonly filled with water to form natural lakes. Deep erosion of a maar presumably would expose a diatreme. The flat portion of the floor may occur at the crater center or occur as an annulus around a central uplift synonymsflat floored impact craterdescriptionimpact craters can have a variable floor.

Partially surrounding the bay is a ridge up to 100 m above the lake with a maximum diameter of 13 km which probably represents the outer rim of the crater. This is generally a splash effect caused by the kinetic energy of the impacting object being turned to heat and melting some lunar material.