Arandas (crater) km in diameter) they usually have a central peak. The peak is caused by a rebound of the crater floor following the impact. Sometimes craters expose layers that were buried. Rocks from deep underground are tossed onto the surface. Hence, craters can show us what lies deep under the surface. Arandas (crater) Arandas Crater is a crater in the Mare Acidalium quadrangle of Mars, located 42.77° North and 15.17° West. It is 24.76 km in diameter and is named after the town of Arandas in Mexico. South is the scalloped terrain of Cydonia Labyrinthus and further south is Cydonia Colles,
Chicxulub crater analysis, arguing that there might only be gaps of hours to days between impacts in a multiple-impact scenario (cf. Shoemaker-Levy 9) which would not leave a detectable gap in deposits. Chicxulub is the only known Earth crater with a remaining impact peak ring, but it is under of sediment. During April and May 2016, a joint IODP-ICDP Mission Specific Platform Expedition no. 364 obtained the first offshore core samples from the peak ring, the central zone of the crater. During Expedition 364, DES drillers on the "L/B Myrtle" collected core samples to enable ECORD Science Party members to study how