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Cubangbang #129323
Cubangbang's 8thA Ch.15 Rocks & Fossils Stack #129323
| Question | Answer |
|---|---|
| Fossil | Any trace or remains of a living organism that has been preserved by natural means |
| Rock | The solid material in the earth’s crust |
| Petrology | The study of rocks |
| Igneous Rocks | Rocks formed by the cooling of molten rocks |
| Metamorphic Rocks | The changes in the original igneous and the sedimentary rock types produced metamorphic rocks |
| Rock Cycle | Description of geologic events |
| Clastic | “Fragmental”. if they appear to contain fragments eroded from other rocks |
| Nonclastic | “Chemical”. F they appear to come from minerals that were dissolved in water |
| Matrix | A material in which something else is enclosed or embedded |
| Impermeable | If there are no interconnected pores in the rocks |
| Precipitated | When the solution of minerals in water becomes supersaturated, the mineral may crystallize out of solution, settling as a solid to the bottom to form a precipitate |
| Evaporate | Evaporation of the water can leave the minerals behind as an evaporite. |
| Salt Domes | Halite deposits occasionally occur deep underground ass vertical cylindrical masses |
| Paleontology | The study of fossilize animals and plants |
| Index Fossils | Fossils that seemingly linked layers of rocks together to a corresponding time were called “guide fossils” of index fossils |
| Geologic Column | A sequence of rocks units and layers that supposedly extends through time from the earliest form rocks to the recently deposited mud, gravel, and sand |
| Polystrate Fossils | Fossils that extend through several layers of sedimentary rock have been found |
| Fossil Fuels | Natural solid, liquid, and gas materials are now known together |
| Magma | Molten rocks found anywhere beneath the earth’s surface |
| Lava | Molten rocks that flows out onto the earth’s surface |
| Extrusive Rocks | Forms when lava solidifies above the earth’s surface |
| Intrusive rocks | Forms when magma solidifies after squeezing into other rocks, intruding them |
| Sills | Magma that may force its way between layers of existing rock to form sheets |
| Dikes | Magma that introduces into cracks that cut through existing layers of rock hardens to form dikes |
| Lava Plateau | Resulting thick rock formation |
| Volcanic Neck | A vertical igneous rock formed by erosion of the surrounding volcanic cone that leaves only the solidified lava originally contained within the volcano’s vent passage |
| Local Metamorphism | A relatively small |
| Regional Metamorphism | Metamorphism that occurred over large areas because of the heat and pressure from immense forces |
| Foliated | Metamorphic rock that has a banded or layered appearance, such as gneiss |
| Nonfoliated | Metamorphic rock that is not banded or layered |
| Geologic Time Scale | Rise to deep |
| Sedimentary Rocks | Rocks consists o particles of sediment that have bonded together by natural cements; solids that have precipitated from water solutions |
Created by:
jcubangbang
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