Results 1-3 of 74
During all of geologic time, sediment has formed at various places on Earth and
in the oceans, ultimately to become compacted and cemented into sedimentary
rocks. The process continues today, and during an average 24-hour period, ...
SiO, sandstones, cherts, argillaceous rocks, limestones, and dolomites
sandstones, cherts, limestones, and dolomites argillaceous rocks, limestones,
and dolomites (Ca.Mg)COj Figure 1: Chemical composition of sedimentary rocks.
(rocks with more than 90 percent quartz, approximately). Similarly, arkoses tend
to lose their feldspar during weathering and erosion and then pass up the scale
of maturity to grade into rocks that are called subarkoses and, again, ultimately ...
What people are saying - Write a review
The New Encyclopaedia Britannica (Encyclopaedia)User Review - Not Available - Book Verdict
For virtually all its 238 years,Britannica has ruled the shelves as a peerless general encyclopedia. Reviewers have consistently given it high marks for most of the 12 criteria identified inKister's ... Read full review