| A | B |
|---|
| batholith | intrusive formation with a surface exposure of more than 100 sq. km and reaching a depth of thousands of meters |
| breccia | clastic sedimentary rock composed of angular fragments cemented together by minerals |
| cementation | process in which dissolved minerals left by water passing through sediments bind the sediments together |
| chemical sedimentary rock | rock formed from minerals that precipitate from water |
| compaction | process in which air and water are squeezed out of sediments, resulting in the formation of sedimentary rock |
| conglomerate | clastic sedimentary rock composed of rounded gravel or pebbles cemented together by minerals |
| contact metamorphism | change in the structure and mineral composition of rock surrounding an igneous intrusion |
| dike | igneous intrusion that cuts across rock layers |
| evaporites | sedimentary rocks formed from minerals left after water evaporates |
| extrusive igneous rock | rocks formed from molten lava that hardens on the earth's surface |
| foliated | describing a metamorphic rock with parallel bands |
| fossil | trace or remains of a plant or an animal in sedimentary rock |
| igneous rock | rock formd from hardened magma |
| intrusive igneous rocks | rocks fromed from the cooling of magma beneath the earth's surface |
| laccolith | flat-bottomed intrusion that pushes overlying rock layers into an arch |
| lava plateau | raised, flat-topped area made of layers of hardened lava |
| metamorphic rock | rock formed from other rocks as a result of intense heat, presssure, and/or chemical processes |
| metamorphism | changing of one type of rock to another by heat, pressure, and/or chemical processes |
| nonfoliated | describing a metamorphic rock without parallel bands |
| organic sedimentary rock | rock formed from the remains of organisms |
| porphyritic | describing an igneous rock composed of both large and small crystals |
| regional metamorphism | metamorphism that affects rocks over large areas during periods of tectonic activity |
| rock cycle | series of processes in which rock changes from one type to another and back again |
| sediment | fragments that result from the breaking of rocks, minerals, and organic matter |
| sedimentary rock | rock formed from hardened deposits of sediment |
| sill | sheet of hardened magma that forms between and parallel to layers of rock |
| stock | igneous intrusion with a surface exposure of less than 100 sq. km |
| stratification | layering of sedimentary rock |
| volcanic neck | solidified central vent of a volcano |
