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  • Example Of A Chemical Sedimentary Rock
    1,925 words
    According to Websters Dictionary, the definition of a mineral is an inorganic substance. Citrine is one of the most popular minerals. It is a variety of quartz. Citrine is a yellowish-orange mineral. Citrine is a very popular gemstone because it is very affordable and very pretty. Along with topaz, citrine is the birthstone for the month of November and the anniversary gemstone for the 17th year of marriage (web). Citrine is also considered a symbol of hope, youth, health, and fidelity (web). In...
  • Planar Fabric In A Metamorphic Rock
    758 words
    October 11, 1999 Classifying Rocks Rocks are classified to make it easier on people to identify them in the future. This can be done by a numerous amount of ways. Each rock type has their own specific ways, but there are two distinct characteristics that apply to all. These are texture and composition. These two, along with many others helps to classify igneous, sedimentary, and metamorphic rocks. Igneous rocks are classified first by texture. This is broken down mainly into grain size. First th...
  • Permian Basin Area
    692 words
    Historical Geology of The Permian Basin One of the largest oil producing areas of the world is located in West Texas. This area is known as the Permian Basin. Most of the oil is being produced from rocks formed in the Permian Period. The largest amounts of these rocks are located in the Permian Basin and southeastern New Mexico. That is why this area is known as the Permian Basin. The main features of the Permian Basin was formed in the early part of the Paleozoic area but it wasn't until the Mi...
  • Edges And Surfaces Of Rock Bodies
    1,601 words
    New York's Geology The bedrock of the earth is made up of rock bodies that vary in size, shape, orientation, composition, color, and texture. These rocks makeup the bedrock, which is present everywhere. If one were to study a map of the bedrock from a versicle point of view, they would find that patterns are made by eroded edges and surfaces of rock bodies that crop out of the state. Most rock bodies are originally tubular and horizontal. Deformations of these rock bodies occur over many years d...
  • Igneous And Sedimentary Rocks
    1,335 words
    Knowledge of structure of earth is essential - Why? 1.) Earth- Structure- 1. Surface features 2. Internal structure. Changes in the Landforms and surface features of earth take place due to internal forces which operate in the interior of the earth. 2. Structure of earth- Three concentric layers A). Crust- Lithosphere, State- solid, A layer of rocks- Thickness 60 km Subdivided in two layers- a) Sial layer / continental layer b) Sima layer / Oceanic crust Sial layer Sima layer Topmost layer lies ...
  • Physical Changes In Igneous And Sedimentary Rocks
    468 words
    The rock cycle has only three types of rocks, igneous rock, sedimentary rock and metamorphic rock. Each of these rocks can form at the expense of the other. Igneous rocks are created when molten material such as magma (within the earth) or lava (on the surface) cools and hardens. The hot material crystallizes into different materials. The properties and sizes of the various crystals depend on the magmas composition and its rate of cooling. Examples of Igneous rock are Granite, Obsidian, Basalt, ...

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