Geological Oceanography

This presentation details the geological shaping of the Earth, and details the formations of the basins that contain our oceans. Learning this geology is essential to understanding the large-scale bathymetry of the seafloor

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Title Slide

Earth consists of a series of concentric layers or spheres

Physical state is determined by the combined effects of pressure and temperature.

Layered Earth - Evidence Of Earthís Layers

Layered Earth - Chemical Properties

Layered Earth - Physical Properties

Three fluid spheres surround the rocky portion of the Earth.

Physiography and bathymetry (submarine landscape) allow the sea floor to be subdivided into three distinct provinces

Bathymetric regimes

Continents and ocean basins differ in composition, elevation and physiographic features.

Isostacy refers to the balance of an object 'floating' upon a fluid medium

Examples of isostasy

Oceanic vs. continental crust

Plate tectonics


Sea floor spreading demonstrates that the sea floor moves apart at the oceanic ridges and new oceanic crust is added to the edges.

Seafloor Spreading - A Key Idea


The geomagnetic field is the magnetic field of the Earth.


Confirmation of the Theory of Plate Tectonics

Sea Floor Spreading

Global Plate tectonics


Earth's surface is composed of a series of lithospheric plates

Global distribution of earthquakes

The Major Lithospheric Plates

Plate Boundaries I

Plate Boundaries II

Plate Boundaries III

Confirmation of the Theory of Plate Tectonics

Confirmation of the Theory of Plate Tectonics

Confirmation of the Theory of Plate Tectonics

Confirmation of the Theory of Plate Tectonics

Overview of bathymetric/tectonic profiles


Author: Sean Todd


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