Question

Student Name Lab Section Date Rock type Number of parent atoms Basalt Number of daughter atoms 7497 071 Granite 11480 3827 Gneiss 839 2517 HORSION TABLE 5.3 6. What is the radiometric age of the basalt? Show your calculalions. 7. What is its relative age? Use the Geologic Time Scale. the r ometric age of the granite? hat 9. What is its relative age? Use the Geologic Time Scale. wth tithe 10. What is the radiometric age of the gneiss? 11. Does the age represent the age of the rock or the age of the metamorphism? CHAPTER 5 Radiometri

Answer 1

given data, Rech le 8258 IS 30 Rasalt 6.25 3827 SO {1480 grante 3356 S 839 gneiss wranium -238 Le fnoqncou oc 206 4.SlO Lod 12510 y A 0025 absdok age of Bajalt

= 2.25 x161yey metamooPhime ck we ul je bo age of aneiss lo Ir*4qlo eue oge of a the basal is youmger than gneiss, gmite, Samd shone dove oge of poniket galonke is yangn am gnelss addon ham basaf, Sond shone the age ePeenk Hhe age oock the not the age o metamoiphism absalute ggeadiomefauc age