The state of Massachusetts has a long list of official symbols. There's an official muffin, a state cat (and dog) and a state rock. But so far, not an official sedimentary structure. That could change ...
Boulder, Colo., USA: The earliest morphological traces of life on Earth are often highly controversial, both because non-biological processes can produce relatively similar structures and because such ...
Gale Crater’s central sedimentary mound (Aeolis Mons or, informally, Mount Sharp) is a 5.5-km-tall remnant of the infilling and erosion of this ancient impact crater. Given its thickness and age, ...
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