In this igneous rock worksheet, students answer 5 questions about igneous rocks and then use a website to find the 6 textures of igneous rock. 2.The shale layer was deposited. Learn vocabulary, terms, and more with flashcards, games, and other study tools. 1) layered intrusions and igneous cumulates (two sessions); 2) felsic rocks and the residua system; and 3) carbonatites and potassic and ultrapotassic igneous rocks. The distinction between the two is made on the basis of the area that is exposed at the surface: if the body has an exposed surface area greater than 100 km2, then it’s a batholith; smaller than 100 km2 and it’s a stock. 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 cooling below the surface of the Earth. Hint: use the half-life from the chart and parent isotope ratio % on the graph from question 6. On the other hand, extrusive rocks are formed when molten magma spill over to the surface as a result of volcanic eruption . Geology 301 page, Back The coarse grained equivalent of a basalt is a: rhyolite gabbro andesite basalt. As the diagram above indicates, dikes and sills are sheets of magma intruded into previously formed rock. Group # 1. following figure depicts Crystal The resulting fragments, illustrated in Figure 3.19, are known as xenoliths (Greek for “strange rocks”). Each individual Note that the sill-versus-dyke designation is not determined simply by the orientation of the feature. Shale Surface of Earth Igneous intr usion Igneous intr Y usion X Rock Profile Limestone Mudstone Which sequence lists the correct order of events in the area represented in the diagram? A 1.Igneous intrusion Y formed. If the country rock has no bedding or foliation, then any tabular body within it is a dyke. Igneous rocks are formed by cooling magma. These adjustments may include 7. Figure 6-5. College page, Back Igneous rocks form as molten, mineral-rich material cools (or, you might say, “freezes”) as it rises toward earth’s surface. to The ), (The vs. black/white, etc. to the Announcements 2.1 Electrons, Protons, Neutrons, and Atoms, 4.5 Monitoring Volcanoes and Predicting Eruptions, 5.3 The Products of Weathering and Erosion, Chapter 6 Sediments and Sedimentary Rocks, 6.3 Depositional Environments and Sedimentary Basins, Chapter 7 Metamorphism and Metamorphic Rocks, 7.5 Contact Metamorphism and Hydrothermal Processes, 9.1 Understanding Earth through Seismology, 10.1 Alfred Wegener — the Father of Plate Tectonics, 10.2 Global Geological Models of the Early 20th Century, 10.3 Geological Renaissance of the Mid-20th Century, 10.4 Plates, Plate Motions, and Plate-Boundary Processes, 11.5 Forecasting Earthquakes and Minimizing Damage and Casualties, 15.1 Factors That Control Slope Stability, 15.3 Preventing, Delaying, Monitoring, and Mitigating Mass Wasting, Chapter 21 Geological History of Western Canada, 21.2 Western Canada during the Precambrian, Chapter 22 The Origin of Earth and the Solar System, 22.2 Forming Planets from the Remnants of Exploding Stars, Appendix 1 List of Geologically Important elements and the Periodic Table. “Country rock” is not necessarily music to a geologist’s ears. to The Measure along one of the sides, then draw a horizontal line at that point. following diagram depicts intrusive and extrusive environments and their crystal Draw a line on the ternary diagram below to mark the value of Q, zero at the bottom and 100 at the top. Refer back too Figure 1. The diagram above most likely represents a _____ extrusive igneous rock intrusive igneous rock clastic sedimentary rock chemical sedimentary rock. Multiple Choice: Choose from the 6 types of igneous intrusions to complete the following sentences. form of MAGMATIC DIFFERENTIATION. MAGMATIC DIFFERENTIATION involves a An intrusion is any body of intrusive igneous rock, formed from magma that cools and solidifies within … The most obvious such effect is the formation of a chilled margin along the edges of the pluton, where it came in contact with country rock that was significantly colder than the magma. diagram below depicts the different rock types. textures are produced by rapid cooling associated with Extrusive ), (another 202 page. Diagram of the Rock Cycle. came in contact with the Parent/Country rock, thus causing the deformation. form of MAGMATIC DIFFERENTIATION), Figure pages may be more suitable for printing. Intrusions have a wide variety of forms and compositions, illustrated by examples like the Palisades Sill of New York and New Jersey; the Henry Mountains of Utah; the Bushveld Igneous Complex of South Africa; Shiprock in New Mexico; the Ardnamurchan intrusion in Scotland; and the Sierra Nevada Batholith of California. mafic.). remains intact in the form of XENOLITHS. Rocks are categorized into types based on the way in which they form. Image credit: VectorMine/Shutterstock.com. Start studying Intrusive and Extrusive Venn Diagram. image is formatted to be less than 7.5 by 9 inches. A dyke can be horizontal and a sill can be vertical (if the bedding is vertical). Large irregular-shaped plutons are called either stocks or batholiths. the form of "chill zones" where the heat and/or fluids from the magma Gravity influences the placement of igneous rocks because it acts on the density differences between the magma and the surrounding wall rocks (country or local rocks). Phaneritic Indicate whether each of the plutons labelled a to e on the diagram below is a dike , … Magma is molten rock that flows beneath the earth's surface. environments and are characterized by large crystals. Geologic block diagram of a hypothetical region showing igneous intrusions (K and L), a fault (M), and sedimentary rock layers. The rock layers have not been overturned. Describe the plate tectonic settings where you would expect to find granitic/rhyolitic rocks: Intrusive Igneous Rocks: When the rising magmas during a volcanic activity do not reach the earth’s surface rather they are cooled and solidfied below the surface of the earth, the resultant igneous rocks are called intrusive igneous rocks. prior to printing! 10. A sill is concordant with existing layering, and a dyke is discordant. 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