Question

1) List the layers (sedimentary and ignoous) given in the figure below in the relative order of deposition. (1 point) Sediment layer 4 .0 0 DOO Ooo Sediment layer 3 14 44 Sediment layer 2 Sediment layer 1 Igneous dike 1 Igneous dile 2 2) In the figure above, 8% of the uranium-238 in igneous dike 1 has decayed to lead-206, and 5% of the uranium-238 in igneous dike 2 has decayed to lead-206. If uranium-238 has a half-life of 4.5 billion years, calculate the minimum and maximum absolute age of the fossilized shell. (1 point) fossilized eura.se 258 in Absolute age = (half-life/0.693)*ln[(D/P)+1] Minimum: Maximum:

Answer 1

In dike- and in 8% of the Uranium-238 decoyed to lead-206 Here D=8% P. = 92% .: Age = Y. S billion yns xen lana 1) 0.693 c 6: 49350 x en (100) . ..G. 49350x 0.0833756 = 0.541399 billion years = 541.399 million years in dike-2 5Of Uranicem 238 decayed - Da5% p=a5% pang Age = 4.5 xan (5 st) in 0.693 - 3 C. 49 350 x () -6.49350 X 0.051293 9:333073 b.y = 333.073 mayas an "max age = 541 million years minm age = 333 million yns.