Relative and Absolute Dating PDF 2024

 Answer and PASS Instruction: Give only 1 terminology that you remember from previous topic from 1 question and your chosen classmate will give the meaning, if the meaning is not given by your classmate Wil remain Standing and call another one to give meaning, if the meaning is stated th...

 Answer and PASS Instruction: Give only 1 terminology that you remember from previous topic from 1 question and your chosen classmate will give the meaning, if the meaning is not given by your classmate Wil remain Standing and call another one to give meaning, if the meaning is stated they can seat and have plus points. Clue: These words are connected to our previous topic REVIEW TIME Give 3 formation of rock layers  Give 6 stratigraphic laws  Give 3 types of Unconformities TRY TO UNLOCK THE CODE! Clue: These words are connected to our topic for today  Z Y X W V U T S 1 2 3 4 5 6 7 8 R Q P O N M L K 9 10 11 12 13 14 15 16 J I H G F E D C 17 18 19 20 21 22 23 24 B A 25 26 26,25,8,12,15,6,7,22 23,26,7,18,13,20 ABSOLUTE DATING  Z Y X W V U T S 1 2 3 4 5 6 7 8 R Q P O N M L K 9 10 11 12 13 14 15 16 J I H G F E D C 17 18 19 20 21 22 23 24 B A 25 26 9,22,15,26,7,18,5,22 23,24,7,18,13,20 RELATIVE DATING  Z Y X W V U T S 1 2 3 4 5 6 7 8 R Q P O N M L K 9 10 11 12 13 14 15 16 J I H G F E D C 17 18 19 20 21 22 23 24 B A 25 26 12,9,18,20,18,13,26,15 19,12,9,18,1,12,1,7,26,15,18,7,2  ORIGINAL HORIZONTALITY  Z Y X W V U T S 1 2 3 4 5 6 7 8 R Q P O N M L K 9 10 11 12 13 14 15 16 J I H G F E D C 17 18 19 20 21 22 23 24 B A 25 26 8,6,11,22,9,11,12,8,18,7,18,12,13 SUPERPOSITION  Z Y X W V U T S 1 2 3 4 5 6 7 8 R Q P O N M L K 9 10 11 12 13 14 15 16 J I H G F E D C 17 18 19 20 21 22 23 24 B A 25 26 24,9,12,8,8,24,6,7,7,18,13,20 CROSSCUTTING  Z Y X W V U T S 1 2 3 4 5 6 7 8 R Q P O N M L K 9 10 11 12 13 14 15 16 J I H G F E D C 17 18 19 20 21 22 23 24 B A 25 26 21,26,6,13,26,15 8,6,24,24,22,8,8,18,12,13  FUAUNAL SUCCESSION  Z Y X W V U T S 1 2 3 4 5 6 7 8 R Q P O N M L K 9 10 11 12 13 14 15 16 J I H G F E D C 17 18 19 20 21 22 23 24 B A 25 26 15,26,7,22,9,26,15 24,12,1,7,18,13,6,18,7,2  LATERAL CONTINUITY  Relative and Absolute Dating Team 3 - Convergence of Group 7 & 10 Presentation OBJECTIVES You Are Expected to: 1. Differentiate relative from absolute dating through pictures presented. 2. Compare relative and absolute dating using comparison chart RELATIVE AGE Prior to absolute age measurements, geologist usec field observations to determine the relative ages They used simple principle in order to get the relative ages. The following are the principles usec by the geologists: The principle of original horizontality is based or the observation that sediment usually accumulates in horizontal layers. Tectonic forces tilted or folded rocks into an angle after it was formed. The principle of superposition states that sedimentary rocks become younger from bottom to top. This is because younger layers of the sedimentary always accumulates at the top of the layers. In figure 4, rocks number 5 are oldest and rocks in 1 are the youngest. Principles of Crosscutting: relationships is based on the fact that rocks must exist before anything else happened like intrusion or die- cuttings across roks. Principle of faunal succession: Species succeeded one another trough time in a definite and recognized from their fossils. The absence or the presence may be used to give a relative age of the sedimentary where they are found. Principles of lateral continuity: explained that layers of sediment are continuous. Layers with same rocks but separated by valley or continuous. Absolute Age Absolute Age Converge = to come together The measure of absolute age or Radioactive elemts decay because exact date they are composed of unstable isotopes that decompose because a spontaneously. challenging task  to the scientist. Radio activity is not affected by geologic process are easily measured in the labpratory.  Some Used Isotopes for Table radiometric Dating Parent Isotope Tasks Owned Half life Effective range Material dated Nitrogen - 40 5730 100- 50000 Wood, shells or Carbon - 14 anything that was once alive, trapped Carbon Dioxide. Argon - 40 1.3 bilion 40,000 - 4.6 Muscovite Potassium - 40 Calcium - 40 billion biotite Volcanic rocks Lead 206 4. 5 billion 10 million - Zircon Uranium 238 4.6 billion Lead 207 710 million 10 million - Urinate Uranium 235 4.6 billion HALF LIFE It is almost impossible to say when the last of the parent atoms I'll decay, but the time taken or half the atoms to decay is comparatively easy to predict. After 713 million years it would contain 500 atoms of U-235 and 500 atoms the daughter  he length is unique feature of T element for the decay each decay process like process pb- 207. The proportion of parent atoms/ uranium is 713 million years. daughter atoms present in an igneous rock gives the age of the rock.  EXIT TICKET Before you go... List the top 2 ideas you learned today. (Show this to your teacher before leaving class!) Try This!