geological dating part ii absolute. absolute age dating this method enables scientists to determine...
TRANSCRIPT
Geological Dating Part II Absolute
Absolute Age Dating
This method enables scientists to determine the actual age of a rock
Radioactive isotopes are found in….
Comparing Relative to Absolute (Numerical)
Radiometric Dating- Rocks
• Define• Ratio• Rate
The original radioactive element is called the parent and the new element is called the daughter
Half-Life• At the end of 1 half-life what
is the relationship of daughter to parent material?
• If 2 rocks were found one containing 2 g of A and the other 4 g of A which rock is older?
• What percent of the sample is Daughter B at 4 Half-Lives?
Clocks in Rocks
• What is the percent of atoms of the parent and daughter element at a half-life of…?
1, 2 & 5
• How can a scientist determine the actual age with this information?
• Now you are ready to click on:
http://www.sciencecourseware.org/VirtualDating/files/1.0_ClocksInRocks.html
Once Living thingsInterpret Evidence
Direct Evidence of past
Fossils
Radiocarbon Dating - Organisms
• Carbon C-14 is changed into Nitrogen N-14 during decay of living organisms.
• Now try this: http://www.sciencecourseware.org/VirtualDating/files/RC0/RC_0.html
Bibliographyhttp://earthsci.org/fossils/geotime/radate/cycle.gif
http://www.math.psu.edu/jech/pictures/GrandCanyon/rocks.jpg
http://earthobservatory.nasa.gov/Study/Paleoclimatology_CloseUp/paleoclimatology_closeup_2.html
www.nps.gov/.../state/tx/1968-7/images/fig26.jpg
http://www.calacademy.org/exhibits/california_hotspot/habitat_redwoods.htm
http://www.geo.cornell.edu/eas/education/course/descr/EAS302/Timescale.GIFitos.edu/earth-http://www.cerrscience/images/ESCI_110_Lecture_notes_images/Goosenecks.jpg
http://geoinfo.amu.edu.pl/wpk/pe/a/harbbook/c_viii/images/geomorph/Car0140.GIF
http://serc.carleton.edu/images/quantskills/methods/PBandJ_175.jpg
http://evolution.berkeley.edu/evosite/lines/images/strat_column.gif
http://comp.uark.edu/~sboss/seds02.jpg
http://www-rohan.sdsu.edu/~rhmiller/geologictime/dikesTexas1.jpg
http://www.fas.org/irp/imint/docs/rst/Sect2/correlation.jpg
http://www.mhhe.com/earthsci/geology/mcconnell/gti/images/utah.JPG
http://www-rohan.sdsu.edu/~rhmiller/geologictime/dikesTexas1.jpg
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http://images.google.com/imgres?imgurl=http://www.winona.edu/geology/MRW/mrwimages/Earth%2520History/metrx_dating.JPG&imgrefurl=http://www.winona.edu/geology/MRW/maps.htm&h=553&w=530&sz=65&hl=en&start=2&tbnid=1fEgWVmmSwDmDM:&tbnh=133&tbnw=127&prev=/images%3Fq%3Dradiometric%2Bdating%2Brocks%26gbv%3D2%26svnum%3D10%26hl%3Den%26client%3Dfirefox-a%26rls%3Dorg.mozilla:en-US:official%26sa%3DG