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In geology, a master stratigraphic sequence for a particular region is built up by correlating the strata from different locations with one another.
As new locations are investigated, the geologist attempts to fit the new profiles into the master sequence of geological strata for that region.
Before the 20th cent., archaeologists and geologists were largely limited to the use of relative dating techniques.
Estimates of the absolute age of prehistoric and geological events and remains amounted to little more than inspired guesswork, as there was no scientific basis for testing such proposals.
"...belief in an omnipotent omniscient creator of the world does not in itself have any moral implications—it's still up to you to decide whether it is right to obey his commands." --Steven Weinberg "..human beings are anything special, we are the creatures that must ponder and talk." --Stephen Jay Gould The lack of conflict between science and religion arises from a lack of overlap between their respective domains of professional expertise—science in the empirical constitution of the universe, and religion in the search for proper ethical values and the spiritual meaning of our lives.
The attainment of wisdom in a full life requires extensive attention to both domains—for a great book tells us that the truth can make us free and that we will live in optimal harmony with our fellows when we learn to do justly, love mercy, and walk humbly.
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In absolute or chronometric dating, the investigator establishes the age of an object or event in calendar years.Stratigraphic dating assumes that the lower layers in any particular profile are older than the upper layers in that profile ("the law of superposition") and that an object cannot be older than the materials of which it is composed.Igneous masses are dated according to whether they caused metamorphism in the surrounding rock (proof of emplacement in preexisting rock) or whether sediments were deposited on them after they were formed.Gods are portrayed as beings who never die, with mighty powers, able to make nature do what they want.Most gods are pictured as being born and having parents.