K.asish subudhi Asked a Question
October 7, 2020 7:45 pmpts 30 pts
Age of granite rocks can be determined using Rb - Sr whole rock radioactive dating method and the following age equation, (Sr/Sr) = (*"Sr/Sr), + ("Rb/soSr) (e- ) 1) For a suite of representative co-magmatic granitic rocks, the Rb - Sr whole rock isochron plot and relevant data are shown in the diagram. The age of granite is calculated at --Ga (1 Ga = 10 yrs, give answer in one decimal place). Isochron Sr= 0.7004 tan=0.014301 A=1.42 x 10"yr" sTRb/Sr
  • 2 Answer(s)
  • like-1
  • 1 Likes
  • 3 Comments
  • Shares
  • Sajan sarthak sahoo thankyou
    1 Ga is the answer .
    • cropped4519363105639115079.jpg
    • cropped366126916917283125.jpg
    Likes(2) Reply(0)
  • Rahul pandey
    Feel free to ask if you have any further queries related to this question
    Likes(0) Reply(0)
  • Rahul pandey thankyou
    Answer: Age= (10)^9 years = 1.0 Ga The given equation of isochrone is in the form of y=mx+c Slope of isochrone(m)= [e^(lambda × time) - 1] tan(theta) = e^[1.42×(10)^(-11)×time]...
    Show more
    Likes(2) Reply(0)
Head Office :
MPA 44, 2nd floor, Rangbari main Road Mahaveer Nagar II, Kota (Raj.) - 324005

Branch Office (Jaipur):
Shyam Tower, Plot No. F2, 6th Floor Amrapali Circle,
Vaishali Nagar, Jaipur, Rajasthan 302021

Mail: info@eduncle.com
All Rights Reserved © Eduncle.com