Andrew Czaja of the University of Cincinnati in Ohio said that the world's oldest sedimentary rocks
- a class of rock which is able to preserve evidence of life -is a logical place to look.
In southern Iraq oil and gas are produced from the limestone and sandstone sedimentary rocks
of the Jurassic Najmah Formation; the Cretaceous Yamama, Zubair, Nahr Umr, Mishrif, and Hartha Formations; and the Miocene (Tertiary) Fars and Ghar Formations.
It is perhaps due to graben faults in the sedimentary rocks
Metamorphic rocks were once igneous or sedimentary rocks
, but due to the movement of the earth's crust, were changed, or "morphed.
74 Ga--deposition of sequences of tholeiitic basalt, komatiite, felsic turf, iron formation, and abundant clastic sedimentary rocks
, accompanied by the emplacement of voluminous, synvolcanic tonalite-trondhjemite plutonic suites and coeval deformation.
Dispute: Rocks that form from the cooling of magma are called igneous rocks Sedimentary rocks
form when particles of other rocks and the remains of plants and animals become cemented together underground
The San Andreas fault shows up plainly because porous sedimentary rocks
lie on one side of that rupture and dense rocks lie on the other.
It's a new gold occurrence in the Moss Township area, found in rocks that were sedimentary rocks
not thought of as high yield potential.
But it offers no explanation of how the supposedly soft sediment remained standing in high vertical walls instead of slumping, of why the layers alternate between chemically produced sedimentary rocks
such as limestone and mechanically produced sedimentary rocks
such as sandstone and shale, or of why the canyon's river channels aren't the sort of wide deep channels that are characteristic of canyons carved by floods.
The rock formations, whose irregular shape gave the area its name of Devil's Punchbowl, are layers of sedimentary rocks
The text shows how sedimentary rocks
are tackled in the field and has been written for all those with a geological background.
in the field; a practical guide, 4th ed.
Encyclopedia of Sediments and Sedimentary Rocks
Edited by Gerard V.
The telltale vertebrae were found within a limestone nodule unearthed from 100-million-year-old sedimentary rocks
in northeastern Brazil.
10) you learned that it's challenging to scale cliffs made of sedimentary rocks
because the rocks tend to crumble.