Sagot :
Answer:
1. Sedimentary Rocks
2. Igneous rocks
3. Metamorphic rocks
4. Sandstone
5. Basalt
6. Granite
7. Marble
8. limestone
9. Slate
10. Schist
11. gneiss
12. intrusive rock
13. Quartzite
14. shale
15. Gabbro
16. obsidian
17. rhyolite
18. Pumice
19. diorite
20. Conglomerate
21. andesite
22. Chert
23. Phyllite
24. Dolostone
Explanation:
1. Sedimentary rocks are formed from pieces of other existing rock or organic material. · Metamorphic Rocks Metamorphic ...
2. Igneous rocks are formed from melted rock deep inside the Earth. ... Sedimentary rocks are formed from layers of sand, silt, dead plants, and animal skeletons.
3. Metamorphic rocks formed from other rocks that are changed by heat and pressure underground.
4. Rocks have many different textures. Layered sandstone produces a gritty texture, whereas coquina may be rough with cemented shells occasionally producing a ...
5. Basalt is, in most cases, an extrusive igneous rock that can exhibit a large variation in porosity (because entrained gases leave voids called vesicles), and ...
6. Uses of Granite The rock used everywhere from the kitchen to the facing stone of skyscrapers. Siltstone. Siltstone is a sedimentary rock composed mainly of silt ...
7. Marble; Gneiss; Schist; Slate. Can you guess what rock type is pictured below? See below for the answer. Thailand is known for this famous rock type that ...
8. It is considered to be a sedimentary rock. Chalk. Chalk is a variety of limestone formed from fine-grained marine sediment known as ooze. Azurite Granite ...
9. A colorful example of Slate, a metamorphic rock used as the building source for Duke University. © 2017 Bryan Pollard, all rights reserved. Examples of ...
10. Schist: Schist has the same satin-like sheen as phyllite but has a coarse texture due to its high mica (muscovite or biotite) content.
11. On the other hand, the texture of gneiss is often described by its distinct banding. Encyclopædia Britannica, Inc. Analysis of texture can yield information ...
12. Granite and diorite are examples of common intrusive rocks. They have a coarse texture with large mineral grains, indicating that they spent thousands or ...
13. Quartzite a nonfoliated metamorphic rock composed almost entirely of quartz. Rock Salt. Rock Salt is a sedimentary rock composed of the mineral halite.
14. Most shales (the lithified version of clay) contain some silt. Pyroclastic rocks are those formed from clastic (from the Greek word for broken) material ...
15. gabbro; granite; pegmatite; peridotite. Extrusive Igneous Rocks. When molten rock breaks the Earth's surface and cools quickly with small crystals ...
16. Some volcanic rocks (like obsidian) don't have any crystals at all. Basalt — note the almost complete lack of visible crystals. Now compare it to the granite.
17. Dacite – Volcanic rock intermediate in composition between andesite and rhyolite; Diabase, also known as dolerite – An intrusive mafic rock forming dykes or ...
18. Pumice is an extrusive igneous rock formed as a result of volcanic eruptions. Extrusive means that it forms outside of the volcano (as opposed to inside the ...
19. Napoleonite, also known as corsite – Variety of diorite with orbicular structure. Dunite – Ultramafic and ultrabasic rock from Earth's mantle which is made ...
20. Conglomerate: Conglomerate is well-rounded gravel in a matrix of sand, clay, and natural cementing agents. Two of the many conglomerates in Utah are the Price ...
21. A rock such as an andesite may have large crystals set within a matrix of tiny crystals. In this case, the magma cooled enough to form some crystals
22. Flint, Chert, and Jasper are types of chalcedony and names for microcrystalline quartz. Tumbled Stones. Tumbled Stones are rocks that have been rounded, ...
23. Phyllite. Banded gneiss with a dike of granite orthogneiss. Marble. Quartzite. Manhattan Schist, from Southeastern New York.
24. Dolostone is a name given to a type of sedimentary rock which is primarily composed of dolomite, a carbonate mineral.