1 What process causes igneous rock to form

1. What process causes igneous rock to form? 2. How does igneous rock become metamorphic rock? 3. What steps cause Igneous rock to become sedimentary rock? Do Now page 36 Erosion and deposition ? ?

Table of Contents • Page 34 / 35: KWL • Page 36: DO NOW • Page 37: Journal Homework Assignment • Glue ½ sheet from folder on page 37 in notebook. This is due next MONDAY. • Record in planner.

Under your do now, pick at least one image. Explain how it is similar to the Grand Canyon.

Our goal today: • We will compare rocks and photos representing two locations in the Grand Canyon, using these to identify limestone, sandstone, and shale. • We will correlate the rocks from 2 locations along the Grand Canyon creating a visual diagram.

Big Idea • Rock layers are three dimensional structures. The sequence of rocks are the same from one location to another.

“Short” History of the Colorado Plateau • A plateau is an area of raised, flat land • The Colorado Plateau has rock layers with high elevation. This means they can be as high as 9000 feet above sea level. Elevation

“Short” History of the Colorado Plateau • 900 – 500 million years ago: A sea was in this area. This is why there is sediment and fossils from a sea floor that created some of the Grand Canyon’s layers • 500 – 70 million years ago: The sea dried up and tectonic plate movement pushed land up to make the Rocky Mountains and the Colorado Plateau. • This caused the water in the Colorado River flow quickly and increase the erosion in the Grand Canyon

What skills and tools do geologists use to gather information? • Create photographs and detailed drawings • Patience – need to be accurate! • Always record what you observe • Journal with details, drawings, and facts • Sense of adventure – think like General Powell

Part 1 • In the green text book, look at page 8 and 9, North Canyon and Nankoweap Canyon. • Use page 6 and 8 to sketch what you see in the canyon photos. • Use page 7 and 9 to sketch drawings of the different rocks from each canyon. Be accurate and detailed in your observations!

Part 2 Correlation: Matching up rock layers in different locations We, geologists, study the composition, color, particle size, and fossils in rock layers to match the layers

…like a layer cake or pile of pancakes • Newest layer • Oldest Layer

…like a layer cake or pile of pancakes 3 Ms. Eberle and her fork “erode” part of the top layer… 2 3 2 1 1

Rock Walls… Nankoweap Canyon Mile 52 9 Toroweap Limestone 8 Coconino Sandstone 7 Hermit Shale 6 Supai LImestone 5 Redwall Limestone 4 Muav Limestone North Canyon Mile 20 10 Kaibib Limestone 9 Toroweap Limestone 8 Coconino Sandstone 7 Hermit Shale 6 Supai Landstone

Part 2 1. Each table, take turns cutting out the two rock walls. 2. Glue them on page 13 so each layer type is line up horizontally. (line up, spread apart, then glue!) 3. Use a ruler to draw horizontal lines between them.

Part 2 4. Fill in the layers with the following patterns. Limestone Shale Sandstone

Answer questions on page 14 in complete sentences

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