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You are browsing the archive for The Geo Model Blog Archives - The Field.

September 18, 2017

Ouachita Mountains: Rock Strength in Action

In this model Phil Prince takes us to the Ouachita Mountains of Arkansas and Oklahoma.

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August 28, 2017

Valleys and Ridges: Understanding the Geologic Structures in Central Virginia, Pt. 2

In this second part of a four part series, Dr. Phil Prince explains why we get the valleys and ridges that are the namesake of the Valley and Ridge province of Virginia.

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June 28, 2017

Valleys and Ridges: Understanding the Geologic Structures in Central Virginia Pt.1

In this first part of a four part series, Dr. Phil Prince explains why we get the valleys and ridges that are the namesake of the Valley and Ridge province of Virginia.

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March 9, 2017

A Virtual Field Trip Through Appalachian Geology

A tour of Appalachia, as reconstructed Virginia Tech Active Tectonics and Geomorphology Lab.

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February 7, 2017

When Strike-Slip Faults Bend

This video shows the development of a restraining and a releasing bend and then shows a cross-section of the model highlighting the different flower structures…

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December 20, 2016

Tectonics, topography, and…art appreciation?

A “forensic geology” perspective on Hudson River School painting and sense of place

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November 17, 2016

Nepal Himalaya model: context of 2015 Gorkha earthquake

New video of a laboratory model which reproduces the decollements — essentially horizontal faults — on which the 2015 Gorkha earthquake rupture occurred in Nepal.

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October 19, 2016

Basin Inversion

In this video continental crust is first pulled apart during extension and then tectonic forces change direction and the crust is put under compression. What results is first a basin and then an inverted basin.

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October 13, 2016

Mountain building: Uplift, erosion and exhumation

If this rock was metamorphosed 25 km deep, why am I holding it now? How did it get back up here? This is a reasonable question for students to ask, and requires them to consider the combined effects of rock uplift and erosional removal of overburden.

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October 4, 2016

When Continents Collide

We call the Appalachian mountains home and understanding our local geology can be challenging to students. How do you explain the juxtaposition of different rock types within the orogen? What tectonic processes are responsible?

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