Transcript Week 13 - Cloudfront.net

Attempts at Integrating Quantitative Activities in
“Rivers and Streams” Lab for Introductory
Geology at CSU Chico
Rachel Teasdale, CSU Chico
The Syllabus- with Streams Activities
Week
of:
Lab Topic
1
Jan 23
Campus Walk
2
Jan 30
Minerals
3
Feb 6
Igneous Rocks
4
Feb 13
Sedimentary Rocks
+ Sed Rocks Homework
5
Feb 20
Metamorphic Rocks
+ Rock Review (Hwk)
6
Feb 27
Topo Maps
7
Mar 6
EXAM 1
Mar 13
Spring Break
8
Mar 20
Geologic Maps
9
Mar 27
Fieldtrip 1
Homework Due week 10
10
Apr 3
Structural Geology
11
Apr 10
Earthquakes
12
Apr 17
Fieldtrip 2
(note: Rivers Pre-work due week 13)
13
Apr 24
Rivers & Streams
14
May 1
Groundwater Lab
15
May 8
EXAM 2
Week 1: Campus Walk
Activities:
• “preview” a variety of future lab topics
• graded, but general enough for students who add the course
late
• establishes a sense of course rigor/expectations
• the first set of (simple!) quantitative experiences.
Lab 1 Activities: Stream measurements
on campus Rock ID (TA’s ID)
intro to contour lines/topo maps
piezometer water levels
intro to seismograph
Week 1: Campus Walk
Stream Activities:
• Determine pace
• Use pace to measure 100’ along creek
• Determine velocity of creek
• Measurements collected from Big Chico Creek, on campus
floating
orange (or
stick/pinecone
)
Week 9: Fieldtrip
Geology of Upper Bidwell Park
• rock ID
• outcrop sketches/
interpretations
• topo maps
• stream velocity
The Syllabus- with Streams Activities
Week
of:
Lab Topic
1
Jan 23
Campus Walk
2
Jan 30
Minerals
3
Feb 6
Igneous Rocks
4
Feb 13
Sedimentary Rocks
+ Sed Rocks Homework
5
Feb 20
Metamorphic Rocks
+ Rock Review (Hwk)
6
Feb 27
Topo Maps
7
Mar 6
EXAM 1
Mar 13
Spring Break
8
Mar 20
Geologic Maps
9
Mar 27
Fieldtrip 1
Homework Due week 10
10
Apr 3
Structural Geology
11
Apr 10
Earthquakes
12
Apr 17
Fieldtrip 2
(note: Rivers Pre-work due week 13)
13
Apr 24
Rivers & Streams
14
May 1
Groundwater Lab
15
May 8
EXAM 2
Week 12: Pre-work
Pre-work review of
a) concepts (hopefully covered) in lectures and
b) calculations used to describe stream flow.
c) opportunity to seek help with calculations from TA’s before the Rivers &
Streams Lab.
Pre-work Calculations
• stream velocity
• stream discharge
• stream volume (in 24 hours)
• weight of water & unit conversions
• questions using dissolved solids & unit conversions
Fig 9.3, Lutgens & Tarbuck , 8th Edition
Week 12: Pre-work
In lab, we will plot these values along with new calculations to compare the velocity of Big
Chico Creek in different seasons as well as the energy of the creek based on the size of particles
that are carried, eroded, and deposited by the creek over time.
Complete the table below for all August values. We will complete the calculations for November
… and
start
entering data to be used in lab to compare Week 1 & Week 13 data
in lab
together.
Stream Properties
Units
Width
ft
Depth
ft
Velocity
ft/s
Velocity
mi/hr
Velocity
m/s
Discharge
ft3/s
Discharge
ft3/day
January Values
Largest eroded
mm
particle (in lab)
Largest transported
mm
particle (in lab)
1 foot = 12 in; 2.54 cm = 1 in; 0.6 km = 1 mi
April Values
(to be completed in class)
Week 13: Rivers & Streams
Stream Activities:
• Measure stream width, depth
• Calculate discharge
• Consider data quality/applicability up/down stream
• Measure cobble sizes (& ID rock type)
• Use Chico Quad to determine stream gradient
convert feet  cm and you know that 2.54 cm = 1 in)
Week 13: Rivers & Streams
______________________________ cm/s
13. Using this velocity and the Hjulstrom diagram below, determine the transportation and erosion capabilities of Big
Chico Creek today.
a. Largest size particle that could be eroded by Big Chico Creek today: _______________ mm
b. Largest size particle that could be transported by Big Chico Creek today:
________________mm
1000
Erosion
Avg velocity (cm/s)
100
10
Transportation
Deposition
1
0.1
0.001
0.01
0.1
1
Diameter of clasts (mm)
10
100
Week 13: Rivers & Streams
8. The water of Big Chico Creek usually contains about 100 parts per million of dissolved solids.
Comparison of data
In other words, every million tons of water contains 100 tons of dissolved rock and mineral
material, including calcium, sodium, iron, and magnesium. If every million tons of water
contains 100 tons ofin
dissolved
rock, how many tons of dissolved solids is carried by Big Chico
• From January to that collected
April
Creek in a year?
ton/yr of dissolved solids
• From previous semester_______________________________
(Fall data = Sept/Nov)
NEW STUFF:
In lab, we will plot these values along with new calculations to compare the velocity of Big
Chico Creek in different seasons as well as the energy of the creek based on the size of particles
• Compare one year’s worth
of data
to previous
years
that are carried,
eroded, and deposited
by the creek over time.
the table below for
all August values. We will complete
the calculations for November
• Compare our data with Complete
California
Department
of Water
in lab together.
Values
Resources BIC station Stream Properties Units January Values (to be April
completed in class)
Width
ft
Depth
ft
Velocity
ft/s
Velocity
mi/hr
Velocity
m/s
Discharge
ft3/s
Discharge
ft3/day
Largest eroded
mm
particle (in lab)
Largest transported
mm
particle (in lab)
1 foot = 12 in; 2.54 cm = 1 in; 0.6 km = 1 mi
Other ideas?
(AKA HELP!!!!)