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- In geology, an igneous intrusion (or intrusive body or simply intrusion) is a body of intrusive igneous rock that forms by crystallization of magma slowly...22 KB (2,757 words) - 12:41, 21 June 2024
- (25 mi) in diameter, exposing sedimentary rock in layers that appear as concentric rings. Igneous rock is exposed inside and there are rhyolites and...23 KB (2,329 words) - 15:19, 27 August 2024
- A layered intrusion is a large sill-like body of igneous rock which exhibits vertical layering or differences in composition and texture. These intrusions...21 KB (2,455 words) - 01:00, 19 August 2024
- The Bushveld Igneous Complex (BIC) is the largest layered igneous intrusion within the Earth's crust. It has been tilted and eroded forming the outcrops...55 KB (6,219 words) - 09:00, 14 August 2024
- Igneous rock (igneous from Latin igneus 'fiery'), or magmatic rock, is one of the three main rock types, the others being sedimentary and metamorphic...48 KB (5,656 words) - 02:36, 23 June 2024
- A large igneous province (LIP) is an extremely large accumulation of igneous rocks, including intrusive (sills, dikes) and extrusive (lava flows, tephra...43 KB (4,620 words) - 06:22, 2 July 2024
- iron-magnesium silicate mineral or igneous rock). The thicker crust is the continental crust, which is less dense and is felsic-rich (igneous rocks rich in elements...33 KB (3,140 words) - 11:04, 16 August 2024
- In geology, igneous differentiation, or magmatic differentiation, is an umbrella term for the various processes by which magmas undergo bulk chemical...21 KB (2,914 words) - 02:23, 20 May 2024
- Rock (geology) (section Igneous rock)are usually grouped into three main groups: igneous rocks, sedimentary rocks and metamorphic rocks. Igneous rocks are formed when magma cools in the Earth's...31 KB (3,312 words) - 13:02, 3 August 2024
- Volcanic rock (redirect from Igneous volcanic rock)lava are called igneous volcanic rocks (to differentiate them from igneous rocks that form from magma below the surface, called igneous plutonic rocks)...22 KB (2,430 words) - 08:07, 20 May 2024
- The Stillwater igneous complex is a large layered mafic intrusion (LMI) located in southern Montana in Stillwater, Sweet Grass and Park Counties. The complex...7 KB (866 words) - 02:24, 21 June 2024
- Sudbury Basin (redirect from Sudbury Structure)geological structures. A further difficulty in proving that the Sudbury complex was formed by meteorite impact rather than by ordinary igneous processes...19 KB (2,047 words) - 07:10, 22 July 2024
- Sedimentary rock (redirect from Sediment layer)crust consisting mainly of igneous and metamorphic rocks. Sedimentary rocks are deposited in layers as strata, forming a structure called bedding. Sedimentary...63 KB (7,683 words) - 08:39, 25 June 2024
- Geology (section Whole-Earth structure)all igneous rocks. The active flow of molten rock is closely studied in volcanology, and igneous petrology aims to determine the history of igneous rocks...87 KB (9,655 words) - 06:54, 21 August 2024
- Diapir (redirect from Piercement structure)(mushroom/dome-shaped diapirs), and other structures capable of trapping hydrocarbons such as petroleum and natural gas. Igneous intrusions themselves are typically...9 KB (795 words) - 11:11, 21 August 2024
- Volcanic and igneous plumbing systems (VIPS) consist of interconnected magma channels and chambers through which magma flows and is stored within Earth's...35 KB (3,680 words) - 20:18, 29 July 2024
- Dome (geology) (section Igneous intrusion)formation). The intrusion of magma into layered sedimentary rocks and the resulting formation of laccoliths or igneous stocks can also create domes. In the...12 KB (1,304 words) - 08:14, 22 April 2024
- List of rock types (category Igneous rocks)rock Alkali feldspar granite – Type of igneous rock rich in alkali feldspar Anorthosite – Mafic intrusive igneous rock composed predominantly of plagioclase...14 KB (2,187 words) - 23:33, 16 April 2024
- Flood basalt (section Large igneous provinces)basalt episodes occurring in the past 250 million years, creating large igneous provinces, lava plateaus, and mountain ranges. However, more have been...42 KB (4,896 words) - 11:47, 19 April 2024
- strata or rock layers. Major focuses include geochronology, comparative geology, and petrology. In general, strata are primarily igneous or sedimentary...13 KB (1,390 words) - 01:55, 17 February 2024
- “false-bedding.” Igneous materials, when deposited through the agency of water or air, exhibit bedding, but no true stratification is seen in igneous rocks that
- In this article we shall look at igneous rocks: what they are and how they are classified. Igneous rocks are rocks formed by the cooling and solidification