Sedimentary rocks are types of rock that are formed by the accumulation or deposition of mineral or organic particles at Earth's surface, followed by cementation. Sedimentation is the collective name ...

An international research team led by Professor Long Xiao from the School of Earth Sciences of China University of Geosciences (Wuhan) has discovered the presence of marine sedimentary rocks on the ...

Stromatolites are dome- or column-like sedimentary rock structures that are formed in shallow water, layer by layer, over long periods of geologic time. Now, researchers have provided evidence that ...

Block diagrams show interpreted sedimentary structures. The boulder is about 110 cm across and preserves a series of left-dipping planar surfaces separating 2-10 cm thick tabular units interpreted to ...

PASADENA, Calif.—Stromatolites are dome- or column-like sedimentary rock structures that are formed in shallow water, layer by layer, over long periods of geologic time. Now, researchers from the ...