He kept encasing his answers in sedimentary layers of facts and assertions.
Others are the common igneous and sedimentary rocks used for building and road materials.
In speaking of sedimentary rocks, we may be said to be anticipating.
The sedimentary deposits include slate, limestone and sandstone.
For my part, I believe it to be volcanic rather than sedimentary.
The superficial extent of the sedimentary beds in North America is very great, as is indicated on the map referred to above.
We should have a right to do so, because that would be true of most sedimentary rocks.
In general, graphite is primarily concentrated both by igneous processes in dikes, and by sedimentary processes in beds.
Traces of such are to be found only in the sedimentary strata.
All strata are sedimentary, consolidated at the bottom of the sea by the pressure of the water and by subterranean heat.
Relating to rocks formed when sediment is deposited and becomes tightly compacted. Depending on the origin of the sediments they contain, sedimentary rocks are classified as clastic sedimentary rocks, chemical sedimentary rocks, or evaporites. Sandstone and conglomerate, for example, consist of fragments of broken preexisting rocks or minerals and are classified as clastic sedimentary rocks. Limestone forms from the precipitation of calcium carbonate through water and is classified as a chemical sedimentary rock. Gypsum and halite deposits form through the evaporation of mineral-rich water and are classified as evaporites.