Summary
Summary Theory of isostacy
- Module
- Institution
The document is full about theories
[Show more]
Seller
Follow
omkeshthakur
Content preview
Theory of Isostasy | Airy and Pratt | World Physical Geography |Geomorphology |Understanding Isostasy: The Concept of Balance
Isostasy is a fundamental concept in earth’s system sciences based on opposing influences of two main
forces, buoyancy and gravity. In this state of gravitational equilibrium between the earth’s crust and
mantle, we will understand how this balance is maintained between the different masses, and the top
most important eight theories of isostasy.
What is Isostasy?
Isostasy is the ideal theoretical balance of all large portions of the earth’s lithosphere as though they
were floating on the denser underlying layer that is asthenosphere. It is the balance between buoyant
forces and the gravity forces. The crust floats at an elevation that depends upon its thickness and
density. It is the idea that lighter crust must be floating on the denser underlying material.
The Theories of Isostasy
There are eight important concepts or theories related to the isostasy concept:
The theory of Sir George Erie in 1854
The theory of Pratt in 1859
The returns concept in 1889
The theory of Heford and Bobby in the 1920s
The theory of Jolly at the same time
The Waning Men’s regional model, also called the flexural model
The theory of Heskinin
The theory of Holmes
Theories of Isostasy
The concept of isostasy refers to the balance of the Earth’s crust, and it is an important concept in
geology. There are several theories of isostasy that have been developed over time, each with its unique
perspective. Here are the major eight theories of isostasy:
The Airy Model: This model studied uniform density with varying depth. It assumes that the surface of
the Earth has the same depth, but different densities. Higher elevations indicate lesser dense rock.
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 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 omkeshthakur. Stuvia facilitates payment to the seller.
Will I be stuck with a subscription?
No, you only buy these notes for £9.09. You're not tied to anything after your purchase.
Can Stuvia be trusted?
4.6 stars on Google & Trustpilot (+1000 reviews)
81849 documents were sold in the last 30 days
Founded in 2010, the go-to place to buy revision notes and other study material for 14 years now