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ERSC/GEOG 2P16. Sedimentology. Rick Cheel. Mackenzie Chown D407. Phone: 905-688-5550 ext. 3512. E-mail: rcheel@brocku.ca. All course material, including the course outline, lecture notes and PowerPoint presentations are available from:. http://www.brocku.ca/sedimentology.

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ERSC/GEOG 2P16

Sedimentology

Rick Cheel

Mackenzie Chown D407

Phone: 905-688-5550 ext. 3512

E-mail: rcheel@brocku.ca


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All course material, including the course outline, lecture notes and PowerPoint presentations are available from:

http://www.brocku.ca/sedimentology


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Midterm Test 20% notes and PowerPoint presentations are available from:

Wednesday, Feb. 18, in class

Assignment Test 15%

March 29, in lab period

Grade Distribution

Assignments 25%

Final Exam 40%

Friday, March 4 is the last date for withdrawal without academic penalty and last day to change from credit to audit status for duration 3 courses.


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Textbook: notes and PowerPoint presentations are available from:Introduction to Clastic Sedimentology

Downloadable from:

http://spartan.ac.brocku.ca/~rcheel/teaching/sedimentology/SedNotes/


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Topics to be covered: notes and PowerPoint presentations are available from:

1. Grain Texture (fundamental descriptors of granular material)

Grain size

Grain shape

Porosity and permeability

Grain orientation

2. Classification of terrigenous clastic rocks.

Arenite

Rudite

Lutite


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3. Unidirectional fluid flow and sediment transport notes and PowerPoint presentations are available from:

Characteristics of unidirectional flows

Simple fluid flow

Fluid gravity flows

Sediment transport

Modes of transport

Initiation of transport


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4. Bed forms and stratification under unidirectional flows notes and PowerPoint presentations are available from:

Bed forms

Terminology

The sequence of bed forms

Bed form stability fields

Cross-stratification formed by bed forms.

Terminology

Origin of cross-stratification

Cross-stratification and bed forms.


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Characteristics of gravity waves

Bed forms and stratification under symmetrically

oscillating currents

Bed forms and stratification under combined flows

The enigma of Hummocky Cross-stratification


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Assignment Schedule (Winter, 2011) notes and PowerPoint presentations are available from:

January 11 No assignment

January 18 No assignment

January 25 1. Analysis of Grain Size Data

February 1 Assignment 1 continued

February 8 2. Analysis of Grain Shape

February 15 3. Analysis of paleocurrent data

February 22 Reading Week

March 1 4. Classification of clastic rocks

March 8 Assignment 4 continued

March 15 5. Paleocurrent problems

March 22 Hand in assignment 5

March 29 Assignment Test


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Clastic Sedimentology: notes and PowerPoint presentations are available from:

The study of sediment and sedimentary rocks that are made up of particles that are the solid products of weathering at or near the Earth’s surface.

Gravel Sand Mud (silt and clay)

Conglomerate Sandstone Siltstone and Shale

Purpose of the course:

To introduce terminology and fundamental concepts for the description and interpretation of clastic sediment and sedimentary rocks.


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Why study clastic sediment? notes and PowerPoint presentations are available from:

Sedimentary rocks make up only 7.9% of the Earth’s crust.


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66% of the surface of the Earth is covered by sediment or sedimentary rocks.

Humans interact with the Earth largely at or near its surface.


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Grow food on it. sedimentary rocks.

Build structures on it.

Take resources from it.

They…..


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At the same time they….. sedimentary rocks.

Hide garbage and other waste material in it.

Modify its physical and chemical properties so that it is no longer useable by them.

It is important to understand the various properties of the sedimentary cover and have systematic methods for describing these properties.


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Sedimentary rocks record the history of changing environments on Earth.

Based on the recognition of the signature of changing environments over time, as preserved in the rock record.

Environmental interpretation of rocks

+

Age of rocks

= Earth History


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Large scale cross-bedding in 240 environments on Earth.

million year old rocks in the

Central US.

= windblown sand dunes; the

Central US was a desert at that

time.


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Environmental interpretation: environments on Earth.

The present is the key to the past.

By examining the characteristics of various environments on Earth today we can interpret the environments in which ancient sediments were deposited.


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Age of rocks: environments on Earth.

Based on relative age (relative to associated rocks)

or

absolute age (radiometric dating).

Earth History:

The history of changing environments on Earth.


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ERSC/GEOG 2P16 focuses on: environments on Earth.

The description and classification of clastic sediment.

Processes and their products in the sedimentary record that aid in interpreting ancient sedimentary environments.