Igneous Rock Classification Chart
Igneous rocks are categorised in line with mode of prevalence texture mineralogy chemical composition and the geometry of the igneous frame.
Igneous rock classification chart. Rock Classification Tables Igneous Rocks Figure A. The main two categories of igneous rocks are known as extrusive and intrusive rocks. The diagram in Figure 341 can be used to help classify igneous rocks by their mineral composition.
Depending on where the molten magma cools they are of the following types. Tun Hussein Onn University of. Pages 22 This preview shows page 11 - 15 out of 22 pages.
Table 42 Texture descriptors for igneous and crystalline 44 metamorphic rocks Table 43 Hardness and unconfined compressive strength of rock 45 materials Table 44 Dry density unit weight 46 Table 45 Weathering terminology. Click to enlarge pdf version for printing. 5 rows Igneous Rock Classification Texture vs.
VOLCANIC ROCKS form at the Earths surface. Typical occurrences of igneous rock bodies on the surface include lava flows lava domes necks and spines. Diorite granite pegmatite are examples of intrusive igneous rocks.
Plutonic igneous classification chart 30 topic. Intrusive igneous rocks are rocks that crystallize below the earths surface resulting in large crystals as the cooling takes place slowly. The type of the various styles of distinct igneous rocks can provide us with essential records approximately the conditions underneath which they fashioned.
The classification and nomenclature of igneous rocks are treated in the final section. Cross section of the earth showing the distribution of igneous rocks. Mineral Percent Abundance Chart.
ROCK DESCRIPTION CHART A IGNEOUS ROCKS ROCK DESCRIPTION CHART B METAMORPHIC ROCKS Rock Name Minerals Present Color Particle Size Layers-Foliation Other Features Granite Quartz Pink or White Feldspar and Dark Colored iron rich Minerals are present White Light gray Pink or Yellow Coarse to fine grained feldspar crystals No layers. The QAP ternary diagram is used to classify igneous rocks with visible mineral grains phaneritic texture from their feldspar and quartz content. Properties of Rocks Worksheet and Comparing and Grouping Rocks Activity Pack.
As you can see from the chart coarse texture grain sizes of 1 to 10 mm and very coarse texture grain sizes of 10mm and larger. Students who viewed this also studied. Our igneous rock classification chart is provided as a fantastic teacher-made worksheet and can be printed in either standard format or downloaded as an editable format if you would like to adjust the resource to suit your.
Compositions of igneous rocks are expressed by a limited number of combinations of the minerals. In plutonic rocks all of the minerals are crystallized into visible grains. The diagram in Figure 316 can be used to help classify igneous rocks by their mineral composition.
There are two subclasses of igneous rock VOLCANIC sometime called EXTRUSIVE and PLUTONIC sometimes called INTRUSIVE. Chapter 4 Engineering Classification of Rock Materials United States Department of Agriculture Natural Resources Conservation Service. As has already been described igneous rocks are classified into four categories based on either their chemistry or their mineral composition.
Felsic intermediate mafic and ultramafic based on either their chemistry or their mineral composition. Mineral names and rock pictures are hot. Plutonic IGNEOUS CLASSIFICATION CHART 30 TOPIC IDENTIFICATION OF SEDIMENTARY.
Visual guide to estimating the proportions. At the surface the magma is more familiarly known as LAVA. Felsic intermediate mafic and ultramafic.
Here is how it works. When the molten magma cools deep inside the earths crust intrusive igneous rocks are formed. The rocks formed by the solidification on the cooling of molten magma are called igneous rocks.
34 Classification of Igneous Rock As has already been described igneous rocks are classified into four categories. Igneous rocks are formed when magma cools either on Earths surface or beneath it though some may form by fragmentation of solidifying magma. Thats why intrusiveigneous rocks usually have a coarse to very coarsetexture.
Here are a few further activities on the topic of igneous rocks. School Tun Hussein Onn University of Malaysia. They cool and crystallized from magma which has spilled out onto the surface at a volcano.
Course Title FKAAS DAA.
