Expert answer:river assignment

Solved by verified expert:Print out the map sheet on the last page of the assignment instructions. You will need to submit an image of this annotated figure with your assignment.Read the questions carefully and make sure you annotate the map where instructed.If you do not submit the map sheet your assignment will not be graded and you will receive a zero.
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rivers_assignment_17.pdf

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Geol 1202 Planet Earth
Assignment – river evolution
In Lecture Ten we looked at how running water in rivers and streams can transport sediment, and how the
processes of erosion and deposition play a role in shaping almost every landscape on Earth. In this
assignment we will look at one river system in particular. You will be called upon to use your skills in
reading maps and contours that you gained from Module 2; if you have forgotten some of the rules for
contours then take a quick look at the module again.
We will be looking at the area around Wolfville and New Minas, Nova Scotia, as shown in this image from
Google Earth. On it you can see several rivers and a number of tributaries.
The Google image is just to show you the region; since it does not contain the information you will need
you will actually be using two types of maps, a topographic and a geological, which you should be familiar
with from Module 2. (These are also available in the Media Library). These online versions allow you to
zoom in on specific areas so you will be able to see the details.
You should make sure you can view these maps on your computer.
I have provided the critical part of the map for you so you can use it to help you find the locations in the
assignment; some questions will require you to draw on it and submit a photograph so you will need to
print it.
What do I do?
First, locate the Black River in the southwest corner of the map, just north of Lumsden Pond. Notice that
the valley is quite deep; there are several contour lines, close together, on each side of the river.
Question 1: What direction does the water in the Black River flow? (use quadrants e.g. north,
south, northwest, etc.). You should also draw arrows on or near the river on your printed map
sheet indicating the direction the water is flowing.
Next find White Rock Mills; here the Black River joins the Gaspereau River.
Question 2: What direction does the water in the Gaspereau River flow? (use quadrants e.g. north,
south, northwest, etc.) You should also draw arrows on or near the river on your printed map sheet
indicating the direction the water is flowing.
Question 3: Where does the water end up (where is the mouth of the Gaspereau River) – give the
name of the feature? Also indicate the mouth on the map print out.
Now look at the area immediately north of White Rock Mills; there is a large valley called Deep Hollow.
Looking at the contours you can see that it is about as deep as the Black River Valley, so one might
expect a large river to flow along Deep Hollow, but there is none. Instead, there is the very small Hancock
Brook.
Question 4: What direction does the water in the Hancock Brook flow? (use quadrants e.g. north,
south, northwest, etc.) You should also draw arrows on or near the river on your printed map sheet
indicating the direction the water is flowing.
Question 5: Where does Hancock Brook empty its water (where is the mouth of the Brook) – give
the name of the feature? Also indicate the mouth on the map print out.
Your observations of these rivers and their tributaries should suggest to you that in the past, perhaps a
few thousand years ago, the Black River followed a different path then it does now.
Question 6: What path do you think it used to take? (describe it).
Question 7: What process might have diverted the waters of the Black River?
Write a short account, in one or two paragraphs, of the evolution of the Black River and Gaspereau
system. You may, if you wish, create a diagram to show how the rivers evolved and attach it as a jpg.
Make sure your drawing is labeled with place names, has a north arrow, and includes your name
somewhere in the drawing.
What do I submit?
You should submit the answers to the questions along with a photo or scan of your annotated map
printout. Make sure that the image is readable. Take note that if you do not submit the photo of your
printed map your assignment will not be graded and you will receive a zero.
Name:
Student Number:
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kilometres
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