Hecates Tholus

Mars31.71505300Koordinaten: 31 ° 42 ' N, 150 ° 0' O

Hecate Tholus is an extinct shield volcano in the Elysium Planitia region on the planet Mars. It lies north of the neighboring volcanoes Elysium Mons and Albor Tholus.

Hecate Tholus is 5.3 km high and has a diameter at the base of 180 km. Its complex structure caldera has a diameter of 10 km and is 600 m deep.

Radial ditches that were eroded by molten lava show on the flanks. At the northwestern edge of a crater is visible, which was created by the collapse after underlying magma chambers were emptied. The western edge also has traces of past glaciation.

Evaluations of Mars probe Mars Express has shown that the volcanoes of Elysium region over long periods of time were active. Larger eruptions of Hecate Tholus took place before 1 billion and 100 million years ago and 300.

• Mars volcano