SUCCESS Pull out planners Absent students will be taking their quizzes = – NO TALKING

9.22 Warm Up 1. If you were shown a cross section of rock layers (like the one below) what would that tell you about how the earth used to look? 2. Take a guess for the layers below

Announcements Turning in late/absent assignments – *****MUST HAVE GREEN OR RED SLIP (or else default to late****** Labs, assignments, quizzes… – All need to be completed by Wednesday Fall break next week – You may start on projects during the break (unless IRB – I’ll you as soon as we hear back) (Go support volleyball team Erie)

Learning Goal: Structure of the Earth 4 – I can predict what layers are oldest/newest and what the environment was like based on the type of layer 3 – I can predict what layers are oldest/newest 2 – I can predict most layers from oldest/newest 1 – I need to review

Pull out your lab book Title: Story of the … Date: 9/22/14 Learning Goal: Predict the environment of the earth by studying rock layers

Rock layers tell us stories about the past! The Story of the…

Once upon a time (well a long time ago – about 1.8 billion years ago) the North American plate collided with an ancient change of volcanic islands, similar to today’s Hawaiian Islands. Great heat and pressure from the collision for a schist type rock. Deep, deep under the surface extreme pressure was rising and caused magma to push up through cracks in the schist creating veins of pink rock hardening to become granite.

No fossils were found in the rock, it was too hot

Then, just a little bit later (well 515 million years ago), a beautiful, romantic muddy, warm and shallow sea covered this region. You were likely to spot a few trilobites, brachiopods, some crinoids and cool little worm- like dudes that lived under the sea (sorry no little mermaid yet). The green colored mud formed layers of green shale located now in the Tonto Platform.

Eventually that sea dried up and became a luscious coastal plain with little creeks and streams. You’d see little reptiles and tiny insects such as 12 inch dragonflies buzzing around (no biggie). This layer was made up of siltstone, mudstone and sandstone and creates the red shale we see today.

About 5 million years later (275 mya) the plains dried up and all that was left were large sand dunes, similar to the Sahara desert. Small desert dwelling creatures such as reptiles, spiders, scorpions and other insects lived here and left their footprints or tracks in the sand. Those tracks fossilized and can be found in the light colored sandstone.

Then only about 5 million years later, the desert became flooded and became a wonderful sea. It was shallow, warm and had clear water. It gave life to brachiopods, sponges, crinoids, corals, cephalopods, fish, and even sharks. This last layer is called Kaibab limestone and is at the very top.

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Pictures & information from: GeoArticle pdf GeoArticle pdf

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Make your own cross section: Create your own using the rock types we’ve discussed and the fossils. Your neighbors will guess the order and type of environment for yours. Top drawings will be shown to the class under the doc cam (MAKE THEM NEAT)

Success I have students testing so please stay quiet

9.23 WARM UP Write down the following type of environment for each rock type: – Green shale:________________ – Red shale:______________ – Sandstone: _____________ – Limestone: _____________ – Conglomerate: _______________

Make your own rock layers Intrusive Igneous: Extrusive Igneous: Green Shale (sed): Red Shale (sed): Sandstone: Limestone: Conglomerate: Wavy rocks (met): Coal: Magma inside cooling, crystals Lava cooling outside Murky, muddy sea Plains with streams Desert Clear water sea Flood, mudslide, landslide Plates colliding Forest with lots of plants

Fossils you might find Intrusive Igneous: Extrusive Igneous: Green Shale (sed): Red Shale (sed): Sandstone: Limestone: Conglomerate: Wavy rocks (met): Coal: NONE Trilobites, Brachiopods, Crinoids Reptiles & Insects Tracks Fish, Sharks, Sponges Rocks, pebbles, boulders NONE

Practice with Forms in lab book Write the order from oldest newest, then write the environment next to it Ex 1:D- desert A – Fault B – deep ocean C – Metamorphic from igneous

Make your own cross section: Create your own using the rock types we’ve discussed and the fossils. Your neighbors will guess the order and type of environment for yours. Top drawings will be shown to the class under the doc cam (MAKE THEM NEAT)

Learning Goal: Structure of the Earth 4 – I can predict what layers are oldest/newest and what the environment was like based on the type of layer 3 – I can predict what layers are oldest/newest 2 – I can predict most layers from oldest/newest 1 – I need to review