If the defining relative clause were removed from the sentence, the sentence would still be gramatically correct, but its meaning would have changed significantly.Defining relative clauses are composed of a relative pronoun (sometimes omitted), a verb, and optional other elements such as the subject or object of the verb.In the second sentence, the pronoun can be omitted because "the woman" is the object of the verb "loved".Dating, in geology, determining a chronology or calendar of events in the history of Earth, using to a large degree the evidence of organic evolution in the sedimentary rocks accumulated through geologic time in marine and continental environments.
Similarly, in geology, if distinctive granitic pebbles can be found in the sediment beside a similar granitic body, it can be inferred that the granite, after cooling, had been uplifted and eroded and therefore was not injected into the adjacent rock sequence.
Any feature, including colour variations, textures, fossil content, mineralogy, or any unusual combinations of these can be used.
It is only by correlations that the conditions on different parts of Earth at any particular stage in its history can be deduced.
To date past events, processes, formations, and fossil organisms, geologists employ a variety of techniques.
These include some that establish a relative chronology in which occurrences can be placed in the correct sequence relative to one another or to some known succession of events.
Radiometric dating and certain other approaches are used to provide absolute chronologies in terms of years before the present.