6 Sedimentary Rock clastic non-clastic Classification of Sedimentary RocksSedimentary Rockclasticnon-clasticbroken pieces of rockchemical(created when water evaporates)organic(created from remains of plants & animals)eg. limestone
7 Where do you think sedimentary rocks would be formed/found near? streams beachesrivers desertsoceans glacierscoral reefs
8 Types of Sedimentary Rocks SandstoneLimestoneShaleConglomerate
9 Metamorphic Rocks How are they made? morphic means “change” so these are rocks that have changed.They were once igneous, sedimentary, or other metamorphic rocks.Pressure and heat cause the change.
10 flattened & layered minerals ClassificationMetamorphic Rockfoliatednonfoliated“leafy”flattened & layered mineralsno bandingslatequartziteThese rocks are physically deformed and chemically changed due to temperature and pressure changes but the rock does not melt!
11 Where are metamorphic rocks likely formed/found near? In fault zonesMountain beltsMid-ocean ridges
13 Igneous Rocks What are They? Ignis is Latin for “fire”-igneous rocks are fire rocksFormed underground by trapped, cooled magmaFormed above ground when volcanoes erupt and magma cools
14 Igneous Rock mafic felsic intrusive (plutonic) extrusive (volcanic) light coloredeg. quartzdark coloredeg. Iron & magnesium containingmaficfelsicIgneous Rockintrusive(plutonic)extrusive(volcanic)Glassy/smooth & small crystals usually not even visiblelarge crystals & coarse texture
15 Where are igneous rocks likely formed/found near? Mid-ocean ridgesSubduction zonesvolcanoes
16 Types of Igneous RocksScoriaGranitePumiceObsidian
17 Idioms and Expressions to Ponder Heart of stoneHead full of rocksStuck between a rock and a hard placeunaffectionate, unforgiving, coldacted without thinking intelligentlyin a situation where you have to make a decision that has no good options or solution
18 Every rock tells a story about: how it formedthe environment where it has beenwhat it has experiencedEach of these stories is an adventure. We need to learn how to read a rock like we read a book.
19 Roundness and SortingRoundness – presence or absence of corners and sharp edgesParticles get rounder as they are transported.Sorting - is a texture that indicates how long the sediments have been in the water system.Poorly sorted sediments show a wide range ofgrain sizes; well-sorted ones have similar sized grains. Sorting increases with transportation.