Crust (geology) Mars comprise secondary crust, as do the lunar maria. On Earth, we see secondary crust forming primarily at mid-ocean spreading centers, where the adiabatic rise of mantle causes partial melting. Tertiary crust is more chemically-modified than either primary or secondary. It can form in several ways: The only known example of tertiary crust is the continental crust of the Earth. It is unknown whether other terrestrial planets can be said to have tertiary crust, though the evidence so far suggests that they do not. This is likely because plate tectonics is needed to create tertiary crust, and Earth is the
Call of Cthulhu: Dark Corners of the Earth of "Call of Cthulhu: Dark Corners of the Earth" was a commercial bomb, with sales slightly above 5,000 units by the end of 2005. Eurogamer's Kristan Reed called it among "the most disappointing" commercial performances of an Xbox game that year, and noted that it had been released "right in the thick of a busy release period to zero fanfare." "Call of Cthulhu: Dark Corners of the Earth" received generally favorable reviews, but was also often criticized for being buggy and inaccessible for many players because of its high difficulty. GameSpy ranked it as the tenth best game of E3