Latitude dependent mantle

Much of the Martian surface is covered with a thick ice-rich, mantle layer that has fallen from the sky a number of times in the past. In some places a number of layers are visible in the mantle.

Layers in mantle deposit, as seen by HiRISE, under the HiWish program. Mantle was probably formed from snow and dust falling during a different climate. Location is Thaumasia quadrangle

HiRISE image showing smooth mantle covering parts of a crater in the Phaethontis quadrangle. Along the outer rim of the crater, the mantle is displayed as layers. This suggests that the mantle was deposited multiple times in the past. Picture was taken with HiRISE under HiWish program. The layers are enlarged in the next image.

Enlargement of previous image of mantle layers. Four to five layers are visible. Location is the Phaethontis quadrangle.

Surface showing appearance with and without mantle covering, as seen by HiRISE, under the HiWish program. Location is Terra Sirenum in Phaethontis quadrangle.

Mantle layers, as seen by HiRISE under HiWish program. Location is Eridania quadrangle

Close view of places covered and not covered by mantle layer which falls from the sky when climate changes. Location is Eridania quadrangle. Picture taken with HiRISE under HiWish program.

Close up view of mantle, as seen by HiRISE under the HiWish program. Mantle may be composed of ice and dust that fell from the sky during past climatic conditions. Location is Cebrenia quadrangle.

Smooth mantle with layers in Hellas quadrangle, as seen by HiRISE under HiWish program

Close view of mantle, as seen by HiRISE under HiWish program Arrows show craters along edge which highlight the thickness of mantle. Location is Ismenius Lacus quadrangle.

Close view that displays the thickness of the mantle, as seen by HiRISE under HiWish program Location is Ismenius Lacus quadrangle.

Close view of mantle, as seen by HiRISE under HiWish program Location is Hellas quadrangle.

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