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Cubangbang #129323

Cubangbang's 8thA Ch.15 Rocks & Fossils Stack #129323

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