"The Composition of Rocks" Rocks and Minerals PPT Courseware 2

Description

"The Composition of Rocks" Rocks and Minerals PPT Courseware 2

beautiful granite

1. Granite

Granite is a tectonic rock that is formed by volcanic eruptions of lava and is bulged to the surface of the earth's crust in a molten state under considerable pressure. As the surface of the Earth's crust forms, it slowly moves and cools down. It is a kind of igneous rock. Ordinary granite is composed of quartz, feldspar, marble, etc., and is black or dark green due to colored minerals. Overall, its color is often affected by feldspar. The dark green or black rock of black granite is made of plagioclase, pyroxene, olivine, hornblende, etc. Therefore, black granite is divided into three types: hormonite, diabase, and basalt.

Granite is a widely distributed rock that has been produced in all geological eras.

Granite has a uniform structure, hard texture and beautiful color. It is a high-quality building stone.

Granite is not easily weathered, has a beautiful color, and can maintain its appearance for more than a hundred years. Due to its high hardness and wear resistance, in addition to being used in high-end architectural decoration projects and hall floors, it is also the preferred material for open-air carvings.

2. Resource status

Granite rock bodies account for about 9% of my country's land area, covering more than 800,000 square kilometers. Especially in the southeastern region, various types of granite bodies are exposed in large areas, which shows that their reserves are huge. According to incomplete statistics, there are about 300 kinds of granite stones. Among the better colors, the following are listed:

The red series include: Sichuan red and China red from Sichuan; Cenxi red from Guangxi; Guifei red and orange red from Lingqiu, Shanxi; Rushan red and Jiangjun red from Shandong, etc.

The black series include: Black King Kong, Chifeng Black, Fish Scale Black from Inner Mongolia; Jinan Qing from Shandong, etc.

The green series include: Shandong Tai'an green; Jiangxi Shanggao's bean green and light green; Anhui's Suxian green flowers with green background; Henan's Zhechuan green, etc.

The flower series include: chrysanthemum green, snowflake green, and plum blossoms in Yanshi, Henan; black flowers on white background in Haiyang, Shandong, etc.

rock formation

1. Magma is generated deep in the ground.

2. There is a large amount of magma beneath the earth's crust.

3. Magma can rise to the ground.

4. Volcanic activity generally occurs at or near the intersection of tectonic plates.

common minerals

There are many items made of minerals around us, and we can often see some minerals. Examples include coal, sulfur, calcite and hematite.

Read the mineral fact cards below to see how people observe and describe mineral characteristics. P83

Classwork

Lesson 3 The Composition of Rocks

1. Fill in the blanks

1. Quartz, feldspar and mica are all found in nature ( ).

2. Minerals rarely exist alone in nature, and are usually composed of several types mixed together ( ).

3. Granite is composed of ( ) ( ) and ( ).

4. Nearly ( ) kinds of minerals have been discovered in the world.

5. Among the three minerals in granite, the transparent and glassy mineral is ( ).

2. Judgment

1. Minerals are important substances that make up the earth’s crust rocks. ( )

2. Granite is mainly composed of three minerals: quartz, feldspar, and mica. ( )

3. There are nearly a hundred kinds of minerals known on the earth. ( )

3. Connections (connect the following substances with their corresponding uses)

Gypsum for pencil lead

graphite dot tofu

diamond building house

Platinum scratched glass

limestone jewelry

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"Composition of Rocks" Rocks and Minerals PPT download:

"The Composition of Rocks" Rocks and Minerals PPT Download Part One Content: New Knowledge Explanation Beautiful Granite Granite is a rock formed by the magma deep in the earth's crust that cools and hardens before it reaches the surface when it penetrates upward along the cracks in the earth's crust. So granite...

"The Composition of Rocks" Rocks and Minerals PPT:

"The Composition of Rocks" Rocks and Minerals PPT Part 1 Content: Beautiful Granite Use a magnifying glass to carefully observe the granite and see what kinds of particles make up the granite? What are they? Although granite comes in a variety of colors, they...

"The Composition of Rocks" Rocks and Minerals PPT Courseware 3:

"The Composition of Rocks" Rocks and Minerals PPT Courseware 3 Formation of Rocks 1. Magma is generated deep in the ground. 2. There is a large amount of magma beneath the earth's crust. 3. Magma can rise to the ground. 4. Volcanic activity generally occurs at or near the intersection of tectonic plates. Types of volcanoes active...

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Update Time: 2024-06-18

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