Rocks For Kids Rock Cycle The Rock Cycle Written for the KidsKnowIt Network by: Brandon Guymon There are three main types of rocks: igneous, sedimentary, and metamorphic. Each of these types of rocks are formed in different ways and each type of rock can be changed into each of the other types of rock. Geologists call this process the Rock Cycle. Essentially the rock cycle is the process that makes and recycles rocks. Most rocks on earth began as igneous rocks. Roll your mouse over the image to highlight the parts of the rock cycle. Our igneous rock has turned into a sedimentary rock. Metamorphic rocks can also be weathered and eroded and eventually changed into sedimentary rocks. An example of metamorphic rock. So let's take the process from the beginning, and find out how it works. When the plates crash into each other, geologists call this type of plate boundary a convergent boundary. In short, the rock cycle is the name for the processes that forms and recycles the different types or rocks on our planet.
4L - Science Essentials - Material world Wherever you are now, there are rocks below you. Even if you are standing on the beach, digging in the garden, swimming in the sea or rowing across a river, there are rocks somewhere beneath your feet. There are many different rocks, from soft mudstone and crumbly sandstone to hard granite. Some rock splits in sheets - like slate. But why, if there are rocks everywhere, are they often covered in earth and stones? Sandy soil has big bits in it. We can use rocks and soils in different ways. Igneous rock Geological significance[edit] Igneous and metamorphic rocks make up 90–95% of the top 16 km of the Earth's crust by volume.[1] Igneous rocks are geologically important because: their minerals and global chemistry give information about the composition of the mantle, from which some igneous rocks are extracted, and the temperature and pressure conditions that allowed this extraction, and/or of other pre-existing rock that melted;their absolute ages can be obtained from various forms of radiometric dating and thus can be compared to adjacent geological strata, allowing a time sequence of events;their features are usually characteristic of a specific tectonic environment, allowing tectonic reconstitutions (see plate tectonics);in some special circumstances they host important mineral deposits (ores): for example, tungsten, tin, and uranium are commonly associated with granites and diorites, whereas ores of chromium and platinum are commonly associated with gabbros. Intrusive[edit]
J Muthurajan, Managing Director of VV Minerals, Tamil Nadu | VV Mineral Blog As Director- VV Group of Companies, Mr. J Muthurajan is responsible for the growth of the company projects in the mining industry itself. He is the man behind the formation and management of the whole in house project group; it was because of this that the company was able to grow fast along with the creation of new facilities of production in various other mining deposits. Having done his graduation from Hindustan College of Engineering, India, he started off with his career in the year 2006. He also handles the V.V College of Engineering which provides quality education at affordable rates to the people of the village and also the local community. Like this: Like Loading... The rock cycle The Earth is an active planet. Earthquakes shake and volcanoes erupt. Sections of the crust are on the move. Mountains push up and wear down. These and many other processes contribute to the rock cycle, which makes and changes rocks on or below the Earth’s surface. The Earth is 4.6 billion years old, but you won’t find rocks that old because they have been recycled into younger rocks. Rocks are made of minerals, which are made of specific chemical elements. There are three main types of rock – igneous, sedimentary and metamorphic. Igneous rocks Magma is a hot mix of melted minerals, and igneous rocks are formed when it cools. Sedimentary rocks On the surface of the Earth, the processes of weathering and erosion can break down any rock into small pieces called sediments. Not all sedimentary rocks are made from broken pieces of other rocks. Metamorphic rocks The Earth’s crust is constantly, but slowly, on the move. Interacting cycles
Metamorphic rock Metamorphic minerals are those that form only at the high temperatures and pressures associated with the process of metamorphism. These minerals, known as index minerals, include sillimanite, kyanite, staurolite, andalusite, and some garnet. Other minerals, such as olivines, pyroxenes, amphiboles, micas, feldspars, and quartz, may be found in metamorphic rocks, but are not necessarily the result of the process of metamorphism. These minerals formed during the crystallization of igneous rocks. Foliation Rocks that were subjected to uniform pressure from all sides, or those that lack minerals with distinctive growth habits, will not be foliated. Another important mechanism of metamorphism is that of chemical reactions that occur between minerals without them melting. Metasomatism is the drastic change in the bulk chemical composition of a rock that often occurs during the processes of metamorphism. See also References External links
Supreme Court’s Judgement Brings Relief To Companies Like VV Minerals | VV Mineral The Heavy mineral mining industry has been suffering huge losses due to delays in the lease renewal process. The Supreme Court has passed a judgement on this and ordered for a deadline to be maintained. This brings a lot of hope for private companies like, VV Minerals as they will not have to suffer anymore. Read More On the Supreme Court Judgement. Like this: Like Loading... Related Sedimentary rock Middle Triassic marginal marine sequence of siltstones (below) and limestones (above), Virgin Formation, southwestern Utah, USA Genetic classification Based on the processes responsible for their formation, sedimentary rocks can be subdivided into four groups: clastic sedimentary rocks, biochemical (or biogenic) sedimentary rocks, chemical sedimentary rocks and a fourth category for "other" sedimentary rocks formed by impacts, volcanism, and other minor processes. Clastic sedimentary rocks Main article: Clastic rock Clastic sedimentary rocks are composed of silicate minerals and rock fragments that were transported by moving fluids (as bed load, suspended load, or by sediment gravity flows) and were deposited when these fluids came to rest. Conglomerates and breccias Sandstones Composition of framework grains The relative abundance of sand-sized framework grains determines the first word in a sandstone name. Abundance of muddy matrix between sand grains Mudrocks Biochemical sedimentary rocks
VV Minerals Chairman Not Under The Scanner Anymore For Illegal Mining Of 96K Crore Heavy mineral mining industry in India is in a growing stage which yields huge benefits to the Indian economy. The largest exporter from the southern part of India, Tamil Nadu is a private company, VV Minerals. There has been a lot of speculation over the business activities of VV Minerals as they were accused of carrying out a scam in which they were illegally exporting heavy minerals. S. At the time of the investigation the mining activities were put to a halt by the Tamil Nadu Government which led to quite a lot of losses for the Company as well as the economy. Following the government norms has always been the main concern at VV Minerals and that is the one and only reason why they have survived for so long in this trade.