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Geologists choose a dating method that suits the materials available in their rocks. Measuring isotopes is particularly useful for dating igneous and some metamorphic rock, but not sedimentary rock.
Sedimentary rock is made of particles derived from other rocks, so measuring isotopes would date the original rock material, not the sediments they have ended up in.
Geologists use radiocarbon to date such materials as wood and pollen trapped in sediment, which indicates the date of the sediment itself.
The table below shows characteristics of some common radiometric dating methods.
However, there are radiometric dating methods that can be used on sedimentary rock, including luminescence dating.
All radiometric dating methods measure isotopes in some way.
(a) Definitions in this chapter apply to this title.(b) If, in another part of this title, a term defined by this chapter has a meaning different from the meaning provided by this chapter, the meaning of that other provision prevails.(c) Except as provided by this chapter, the definitions in Chapter 101 apply to terms used in this title.
"Court" means the district court, court of domestic relations, juvenile court having the jurisdiction of a district court, statutory county court, constitutional county court, or other court expressly given jurisdiction under this title.
For example, fission track dating measures the microscopic marks left in crystals by subatomic particles from decaying isotopes.
The existence of such a relationship shall be determined based on consideration of:(1) the length of the relationship;(2) the nature of the relationship; and(3) the frequency and type of interaction between the persons involved in the relationship.(c) A casual acquaintanceship or ordinary fraternization in a business or social context does not constitute a "dating relationship" under Subsection (b).
(a) "Dating violence" means an act, other than a defensive measure to protect oneself, by an actor that:(1) is committed against a victim or applicant for a protective order:(A) with whom the actor has or has had a dating relationship; or(B) because of the victim's or applicant's marriage to or dating relationship with an individual with whom the actor is or has been in a dating relationship or marriage; and(2) is intended to result in physical harm, bodily injury, assault, or sexual assault or that is a threat that reasonably places the victim or applicant in fear of imminent physical harm, bodily injury, assault, or sexual assault.(b) For purposes of this title, "dating relationship" means a relationship between individuals who have or have had a continuing relationship of a romantic or intimate nature.
"Prosecuting attorney" means the attorney, determined as provided in this title, who represents the state in a district or statutory county court in the county in which venue of the application for a protective order is proper.
Geologists often need to know the age of material that they find.