The Perseverance rover has found some intriguing samples on the red planet. Here's what they might reveal about the origins ...

Dense, dark, compact—at first glance, the sedimentary rock samples that Dr. Amirsaman Rezaeyan has on his lab desk are only ...

Scientists use a wide variety of methods to subsample and analyze the rock samples, like thin sections, isotope analysis, chemical analysis, among others, to get a greater understanding about ...

This is because they are already in locations where sediment is likely to bury them and shelter them from scavengers and decay. Mudstone, shale, and limestone are examples of sedimentary rock likely ...

Sedimentary rocks close sedimentary rockSedimentary rocks ... to weathering and erosion and are therefore very hard-wearing. Examples of metamorphic rocks include marble, which originates from ...