What rocks are used for radiometric dating
What rocks are used for radiometric dating - Naked chat srilanka
By the way, it is important to understand that most rock strata “dates” were actually assigned long before the first use of radioactive age estimating methods in 1911.
Age estimates on a given geological stratum by different radiometric methods are often quite different (sometimes by hundreds of millions of years).In some outcrops pillow structures have been preserved, testimony to the basalt lavas having originally erupted and flowed under water onto the Creation Week ocean floor.Metamorphic rocks are not always easy to date using radio-isotopes.Clearly visible in the canyon walls are the light-colored granites, such as the Zoroaster Granite, which are stark against the darker, folded strata of the Vishnu Schist and the other metamorphic rock units of the Granite Gorge Metamorphic Suite (see lowest purple and green shading in diagram).These are former sedimentary and volcanic strata that have been transformed by heat and pressure, possibly during the intense upheavals when the dry land was formed on Day 3 of Creation Week.And it does not work on rocks or thoroughly mineralized fossils; it is only useful for relatively well-preserved organic materials such as cloth, wood, and other non-fossilized materials.
Other methods must be used to estimate the age of rocks and minerals.The problem seems to arise from basic wrong assumptions in the method (rubidium-strontium isochron).If such a sophisticated method is so flawed, geologist Dr.Steven Austin rightly wonders, "Has anyone successfully dated a Grand Canyon rock? The validity of the calculated date can be no stronger than the weakest link (weakest assumption) used in the calculation.What are some of the assumptions made by most Evolutionists in using these systems?Net users generous rights for putting this page to work in their homes, personal witnessing, churches and schools.