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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!!!!)