New User Special Price Expires in

Let's log you in.

Sign in with Facebook


Don't have a StudySoup account? Create one here!


Create a StudySoup account

Be part of our community, it's free to join!

Sign up with Facebook


Create your account
By creating an account you agree to StudySoup's terms and conditions and privacy policy

Already have a StudySoup account? Login here

Geology Notes January 19th

by: Imani Notetaker

Geology Notes January 19th Geol 2150

Imani Notetaker
GPA 2.0

Preview These Notes for FREE

Get a free preview of these Notes, just enter your email below.

Unlock Preview
Unlock Preview

Preview these materials now for free

Why put in your email? Get access to more of this material and other relevant free materials for your school

View Preview

About this Document

Dating and telling the time of fossils of plants, shells, bones
Geologic History of Dinosaurs
Dr. Peg Yacobucci
75 ?




Popular in Geologic History of Dinosaurs

Popular in Environmental Science

This 2 page Bundle was uploaded by Imani Notetaker on Thursday February 11, 2016. The Bundle belongs to Geol 2150 at Bowling Green State University taught by Dr. Peg Yacobucci in Winter 2016. Since its upload, it has received 19 views. For similar materials see Geologic History of Dinosaurs in Environmental Science at Bowling Green State University.


Reviews for Geology Notes January 19th


Report this Material


What is Karma?


Karma is the currency of StudySoup.

You can buy or earn more Karma at anytime and redeem it for class notes, study guides, flashcards, and more!

Date Created: 02/11/16
geology chronostratigraphy any method for determining absolute age • radiometric • fission track • luminescence dating radiometric dating: how most rock ages are determined relies on nuclei isotopes = atoms of the same element that have different number of neutrons hydrogen - 1 proton 0 neutrons deuterium - 1 proton 1 neutron tritium radioactivity some isotopes are stable - don’t change others are unstable- spontaneously convert or decay into other elements, these are radioactive isotopes Henri Becquerel discovered radioactivity 1895 Maria Curie isolated radium in 1898 nobel prize in 1903 Erenest Rutherford proposed using principle of radioactive decay to date rocks in 1905 Bertram Borden Boltwood dated earth to 2.2billion years old in 1907 How does Radioactivity tell time? Roman candle - a fixed amount of wax burns per unit time (linear) can’t used to date a rock Radioactive decay - a fixed proportion of atoms decays per unit time (exponential) can use to date a rock to date rock that are really old exponential radioactive decay P=Poe-upsidedown y t P NUMBER OF PARENT ATOMS IN A ROCK NOW Po parent atoms in rock originally = number parents P + number daughter atoms D in rock now upside-down y decay constant t - time of decay Decay rate and half life Each isotope has unique decay rate (upsidedown y) decay rate is related to half-life Half-life is time it takes for half of parent atoms to convert to daughters note: Radiocarbon dating only works on very young (<60,000 years old) materials - not for dinosaurs can we use carbon 14 to date dinosaurs : no Rock a had d/p 4/20 rock b had d/p 8/20 b is older Assumptions of radiometric Dating • Decay constants are really constant • system has remained closed = no parents of daughters have left or entered the rock since it was formed Melting a rock opens the system so a radiometric date is always the time the rock last called from a melt means only igneous rocks can be dated not sedimentary rocks


Buy Material

Are you sure you want to buy this material for

75 Karma

Buy Material

BOOM! Enjoy Your Free Notes!

We've added these Notes to your profile, click here to view them now.


You're already Subscribed!

Looks like you've already subscribed to StudySoup, you won't need to purchase another subscription to get this material. To access this material simply click 'View Full Document'

Why people love StudySoup

Bentley McCaw University of Florida

"I was shooting for a perfect 4.0 GPA this semester. Having StudySoup as a study aid was critical to helping me achieve my goal...and I nailed it!"

Jennifer McGill UCSF Med School

"Selling my MCAT study guides and notes has been a great source of side revenue while I'm in school. Some months I'm making over $500! Plus, it makes me happy knowing that I'm helping future med students with their MCAT."

Jim McGreen Ohio University

"Knowing I can count on the Elite Notetaker in my class allows me to focus on what the professor is saying instead of just scribbling notes the whole time and falling behind."


"Their 'Elite Notetakers' are making over $1,200/month in sales by creating high quality content that helps their classmates in a time of need."

Become an Elite Notetaker and start selling your notes online!

Refund Policy


All subscriptions to StudySoup are paid in full at the time of subscribing. To change your credit card information or to cancel your subscription, go to "Edit Settings". All credit card information will be available there. If you should decide to cancel your subscription, it will continue to be valid until the next payment period, as all payments for the current period were made in advance. For special circumstances, please email


StudySoup has more than 1 million course-specific study resources to help students study smarter. If you’re having trouble finding what you’re looking for, our customer support team can help you find what you need! Feel free to contact them here:

Recurring Subscriptions: If you have canceled your recurring subscription on the day of renewal and have not downloaded any documents, you may request a refund by submitting an email to

Satisfaction Guarantee: If you’re not satisfied with your subscription, you can contact us for further help. Contact must be made within 3 business days of your subscription purchase and your refund request will be subject for review.

Please Note: Refunds can never be provided more than 30 days after the initial purchase date regardless of your activity on the site.