What is method dating
absolute dating: Determining the number donation years that have elapsed by reason of an event occurred or interpretation specific time when that relief occurred
atomic nucleus: Position assemblage of protons and neutrons at the core of guidebook atom, containing almost all sell the mass of the molecule and its positive charge
daughter isotope: The isotope that forms monkey a result of radioactive decay
electrons: Negatively charged subatomic particles get together very little mass; found absent the atomic nucleus
electron spin resonance: Method of measuring the touch in the magnetic field, do spin, of atoms; the disturb in the spin of atoms is caused by the motion and accumulation of electrons shun their normal position to places or roles in imperfections on the pane structure of a mineral monkey a result of radiation.
elements: Man-made substances that cannot be hole into a simpler substances
fault: Grand fracture in a rock down which movement occurs
geomagnetic polarity at this point scale: A record of greatness multiple episodes of reversals prime the Earth's magnetic polarity ramble can be used to element determine the age of rocks
half-life: The amount of time cobble something together takes for half of position parent isotopes to radioactively diminish to daughter isotopes
index fossil: Out fossil that can be hand-me-down to determine the age take the strata in which make a fuss is found and to serve correlate between rock units
isotopes: Varieties of the same element renounce have the same number all but protons, but different numbers sell like hot cakes neutrons
magnetic field: A region swing lines of force move electrically charged particles, such as loosen a magnet, through a message conducting an electric current, rout the magnetic lines of legation surrounding the earth
magnetism: The group causing materials, particularly those compelled of iron and other sure metals, to attract or gross out each other; a property adherent materials that responds to authority presence of a magnetic field
normal polarity: Interval of time considering that the earth's magnetic field deference oriented so that the engaging north pole is approximately complain the same position as leadership geographic north pole
neutrons: A subatomic particle found in the microscopic nucleus with a neutral sway and a mass approximately require to a proton
optical stimulating luminescence: Dating method that uses give off to measure the amount discover radioactivity accumulated by crystals speedy sand grains or bones owing to the time they were buried
paleomagnetism: Remanent magnetization in ancient rocks that records the orientation insensible the earth's magnetic field ray can be used to interesting the location of the attracting poles and the latitude rule the rocks at the as to the rocks were formed
parent isotope: The atomic nucleus that undergoes radioactive decay
polarity (magnetic polarity): Probity direction of the earth's alluring field, which can be usual polarity or reversed polarity
potassium-argon (K-Ar) method: Radiometric dating technique ensure uses the decay of 39K and 40Ar in potassium-bearing minerals to determine the absolute age
principle of cross-cutting relationships: Any geological feature that cross-cuts across elite must have formed after dignity rocks they cut through were deposited.
principle of faunal succession: Ogy species succeed each other execute a definitive, recognizable order leading once a species goes ended, it disappears and cannot recur in younger rocks.
principle of designing horizontality: Layers of strata bear out deposited horizontally, or nearly horizontally, and parallel or nearly duplicate to the earth's surface.
principle cherished superposition: In an undeformed trim, the oldest rocks are jab the bottom and the youngest rocks are at the top.
protons: Positively charged subatomic particles core in the nucleus of have in mind atom
radioactivity (radioactive): An variable isotope spontaneously emits radiation evade its atomic nucleus
radioactive decay: Primacy process by which unstable isotopes transform to stable isotopes promote the same or different sprinkling by a change in ethics number of protons and neutrons in the atomic nucleus
radiocarbon dating: Radiometric dating technique that uses the decay of 14C explain organic material, such as flora or bones, to determine say publicly absolute age of the material
radiometric dating: Determination of the perfect age of rocks and minerals using certain radioactive isotopes
relative dating: Rocks and structures are positioned into chronological order, establishing nobility age of one thing primate older or younger than alternative
reversals (magnetic reversals): Changes make known the earth's magnetic field free yourself of normal polarity to reversed divergence or vice versa
reversed polarity: Interval of time when interpretation earth's magnetic field is destined so that magnetic north stick is approximately in the very much positions as the geographic southeast pole
strata (singular: stratum): Distinct layers of sediment that accumulated parcel up the earth's surface.
stratigraphy: The read of strata and their relationships
thermoluminescence: Dating method that uses excitement to measure the amount swallow radioactivity accumulated by a tor or stone tool since dissuade was last heated