Department
of Earth Science |
Northeastern
Illinois University
INTRODUCTION
TO EARTH SCIENCE
ESCI 121
Fall 2006
Daily
Objectives #11 (October 3, 2006)
Dr. Sanders
By the end of today’s class, you should be able to do the
following:
Review:
* List and describe the two main categories of weathering (chemical weathering
and mechanical
weathering), and
give a few examples of each type.
* Explain the steps in forming deposits of sediments,
including weathering,
erosion, transport, and deposition.
* Distinguish between chemical sediments and detrital sediments,
describing characteristics of each category and telling how they form.
* Explain the steps in forming sedimentary rocks
from sediments,
correctly using and explaining the term lithification.
New Today:
* Explain the difference
between gravel, sand, and clay
sediments.
* Examine hand samples of sedimentary rocks and describe their
textural features, distinguishing between detrital
sedimentary rocks and chemical
sedimentary rocks.
* Using the sedimentary rock key in your textbook on p. 63,
identify hand samples of sedimentary rocks and explain how you arrived
at each name.
* Explain why the minerals quartz and calcite are commonly found in
sedimentary rocks.
Homework:
Get
the homework assignment by visiting the page
for our course syllabus and clicking on "Homework" in the yellow
box near the top of the page. The assignment is due Oct. 10,
2006--one week from today!
© 2006 Laura L. Sanders. Last updated October 3, 2006.