Gsci 100 –lab 4: The big synthesis

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GSCI 100 –LAB 4: The big synthesis

(Teaching notes)

1) Introduction (5 min)

-lab is a rock review and a tectonics review…and a grand collision of both topics

-this is a 3-part lab

…part 1: what characterizes ig, sed. and met. rocks.

…part 2: how do rocks link with tectonic setting? What stories do rocks tell?

---part 3: sample quiz

2) Lab Exercise part 1:

20 minutes: At each table there are 4 boxes. What things do they see that represent:

a) ig-intrusive, b)ig-extrusive, c)sed., d)met.

10 minutes: Report out. (Ig-intrusive rocks look like…)

3 minutes: determine the rock group for the rocks from last week

3) Lab Exercise part 2: (60 minutes) 15 minutes per station-4 stations

 This lab is all about tying together rocks with tectonic settings

 Review/present law of superposition—remembering what kind of rocks this applies to

 Review/present law of baked contacts—remembering what kind of rocks this applies to

 Review/present lat. long. coordinate systems

 Teach about mafic versus felsic

 Think of these rocks as part of a drill core with a top, middle and bottom
4) Class re-group

-(5 minutes) each rock suite group presents to the class their findings

**It is most important that students propose a reasonable explanation for their rock suite that

coordinates with the tectonic setting. The Adirondack rocks in particular have multiple explanations…the students must just make sure that their hypotheses are supported by the data they collected.

5) Sample Quiz

-(5 minutes) students work individually and then we go over the answers as a group.

Part 1 samples:

>>requires separate boxes or bags of igneous-intrusive rocks, igneous-extrusive rock, sedimentary rocks and metamorphic rocks. These boxes/bags can even have samples that students have never seen before. The goal of this is to get students looking at similarities and differences amongst the big rock groups.

Part 2 samples:

>>For each station, three rocks are present and are labeled “Top”, “Middle”, and “Bottom”

The stations and rocks are as follows:

Mid Atlantic Ridge

The Adirondacks

Cusco, Peru

Katmandu, Nepal
















Part 3 samples:

>>any of the following rock pairs can be used for the sample quiz.

Top: basalt rhyolite pumice

Bottom: gabbro granite rhyolite or granite
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