Exam (elaborations)
ASBOG - General and Field Geology (20%) (28 Questions And Answers )
- Course
- Institution
ASBOG - General and Field Geology (20%) (28 Questions And Answers )
[Show more]
Content preview
ASBOG - General and Field Geology (20%)(28 Questions And Answers )
Younger layers of rock sit
atop older layers
Law of Superposition
Layers of sedimentary
rock are initially deposited
Law of Initial Horizontality flat in layers.
the fossil assemblage ex-
isting within a rock speci-
men can be used to deter-
relative age dating
mine upper and lower pos-
sible age. Gives age range.
Example: 100 to 200 mya.
the process of measuring
the absolute age of geo-
logic material by measur-
radiometric dating ing the concentrations of
radioactive isotopes and
their decay products. Can
give exact date.
, ASBOG - General and Field Geology (20%)
(28 Questions And Answers )
A method for determining
the age of rocks based
on properties relating to
paleomagnetic dating
changes in the patterns
of Earth's magnetism over
time.
Carbon-14 or radiocarbon dates up to 60,000 years.
Potassium-argon isotope greater than 100,000
dating years old
date carbonate materials
Uranium-thorium dating that are younger than
about 500,000 years
Rubidium-Strontium iso- igneous materials over 10
tope dating million years old
date between 1 million and
Uranium-lead isotopes
4.5 billion years old
geologic time scale
, first appearance of inverte-
brates
Paleozoic
appearance of reptiles
Mesozoic Era
Appearance of mammals
and man
Cenozoic Era
Geologic formation named
based on the specific loca-
Type section
tion or area where the for-
mation is best exposed or
The benefits of buying summaries with Stuvia:
Guaranteed quality through customer reviews
Stuvia customers have reviewed more than 700,000 summaries. This how you know that you are buying the best documents.
Quick and easy check-out
You can quickly pay through credit card or Stuvia-credit for the summaries. There is no membership needed.
Focus on what matters
Your fellow students write the study notes themselves, which is why the documents are always reliable and up-to-date. This ensures you quickly get to the core!
Frequently asked questions
What do I get when I buy this document?
You get a PDF, available immediately after your purchase. The purchased document is accessible anytime, anywhere and indefinitely through your profile.
Satisfaction guarantee: how does it work?
Our satisfaction guarantee ensures that you always find a study document that suits you well. You fill out a form, and our customer service team takes care of the rest.
Who am I buying these notes from?
Stuvia is a marketplace, so you are not buying this document from us, but from seller Accurate. Stuvia facilitates payment to the seller.
Will I be stuck with a subscription?
No, you only buy these notes for $12.99. You're not tied to anything after your purchase.
Can Stuvia be trusted?
4.6 stars on Google & Trustpilot (+1000 reviews)
83637 documents were sold in the last 30 days
Founded in 2010, the go-to place to buy study notes for 14 years now