UNIT IX: Rcks Ntes Packet UNIT IX: ROCKS NOTES PACKET Picture: Lwer Falls n the Genesee River in Rchester, NY. Here the variable weathering rates have expsed a number f unique rck layers all f which are sedimentary. The reddish-purple sandstnes are cmmnly fund arund Rchester being used 1 as building P a g e stnes.
UNIT IX: Rcks Ntes Packet After UNIT IX yu shuld be able t: Understand the prcesses within the rck cycle Be able t identify cmmn rcks Be able t describe where and hw certain rcks frm Utilize the ESRT t determine infrmatin abut: Rck name Texture Envirnment f frmatin Mineral cmpsitin Grain size Frmatin details Rck map symbls Cmments UNIT VIII vcabulary yu shuld be able t use and understand: Crust Element Mineral Rck Igneus Sedimentary Metamrphic Magma Melting Slidificatin Intrusive Extrusive Vlcanic eruptin Texture Crystals Grains Glassy Vesicular Fine Carse Interlcking crystals Mlten rck Disslved gases Lava Plutn Felsic Mafic Density Cntinental Oceanic Cementatin Fragmental Slutin Organic Uplift Weathering Ersin Cmpactin Cementatin Burial Depsitin Clastic Crystallize Precipitates Evaprites Metamrphism Cmpressin Reginal metamrphism Cntact metamrphism Fliated Nn-fliated Mineral alignment Banding Gas pckets 2 P a g e
UNIT IX: Rcks Ntes Packet In UNIT IX we seek t understand the characteristics and cycling f rcks. Rcks can prvide a variety f infrmatin t gelgists, but it is first imprtant t gain sme insight int the majr elements in Earth s crust. 1 What is a rck? Rcks are classified int 3 distinct grups based n hw they frmed. 3 P a g e
UNIT IX: Rcks Ntes Packet IGNEOUS ROCKS Hw d igneus rcks frm? _ 2 Types f Igneus Rcks Igneus rcks fall int ne f the tw fllwing categries: Scheme fr Igneus Rck Identificatin This chart easily delineates which grup cmmn igneus rcks belng t. Extrusive (vlcanic) Igneus Rcks 4 P a g e
UNIT IX: Rcks Ntes Packet Extrusive Igneus Rck Textures 3 Intrusive (plutnic) Igneus Rcks Cling Rate and Crystal Size 5 P a g e
UNIT IX: Rcks Ntes Packet Mineral Surces fr Igneus Rcks Intrusive Igneus Rck Textures 4 Further Classificatin f Igneus Rcks Examples f mafic and felsic rcks 6 P a g e
UNIT IX: Rcks Ntes Packet Mineral Cntent Minerals within igneus rcks vary based n surce magma/lava and the envirnmental cnditins f slidificatin \ Fr example, granite cntains the minerals ptassium feldspar, quartz, plagiclase feldspar, bitite, and amphible 5 SEDIMENTARY ROCKS What is a sedimentary rck? Sedimentary rcks meet ne f the fllwing cnditins: 7 P a g e
UNIT IX: Rcks Ntes Packet 6 Clastic (fragmental) Rcks Cncrete wuld be classified as a clastic sedimentary rck 8 P a g e
UNIT IX: Rcks Ntes Packet Classifying Clastic Rcks Origins f Grains Sand grains culd be depsited n a beach such as these frm Hawaii Layers f these sediments can then be cemented tgether Crystalline Rcks 9 P a g e
UNIT IX: Rcks Ntes Packet Biclastic Rcks 7 METAMORPHIC ROCKS Metamrphic Rcks 8 Metamrphism Hw des metamrphism ccur? Hw des the rck change? 10 P a g e
UNIT IX: Rcks Ntes Packet Textures f Metamrphic Rcks Fliated Metamrphic Rcks Nn-fliated Metamrphic Rcks 9 Cntact Metamrphism Use bth the sedimentary and metamrphic rck charts t identify what the sedimentary rcks metamrphse int 11 P a g e
UNIT IX: Rcks Ntes Packet 10 ROCK IDENTIFICATION FOR THE PART D LAB PRACTICAL Within 2 weeks f yur final exam in June, yu will be required t cmplete the Part D Lab Practical. The lab practical is ut f 16 pints, 4 f which are rck identificatin. Yu will be required t identify 2 rcks (igneus, sedimentary, r metamrphic) and state ne bservable characteristic that supprts yur chice. Here is a quick review f rck textures/characteristics that yu may see n the final. Sedimentary Rcks Observatin yu might make that indicate a rck is sedimentary: 12 P a g e
UNIT IX: Rcks Ntes Packet Metamrphic Rcks Observatins yu might make that indicate a rck is metamrphic Igneus Rcks Observatins yu might make that indicate a rck is igneus: 11 13 P a g e
UNIT IX: Rcks Ntes Packet CHECKS FOR UNDERSTANDING 1 /4 2 /1 3 /2 14 P a g e
UNIT IX: Rcks Ntes Packet 4 /2 15 P a g e
UNIT IX: Rcks Ntes Packet 5 /5 16 P a g e
UNIT IX: Rcks Ntes Packet 6 /1 17 P a g e
UNIT IX: Rcks Ntes Packet 7 /5 8 /1 18 P a g e
UNIT IX: Rcks Ntes Packet 9 /3 10 /3 19 P a g e
UNIT IX: Rcks Ntes Packet 11 Fr each f the rck samples, state if they are igneus, metamrphic, r sedimentary and prvide ne piece f evidence that supprts yur chice. /6 Picture Rck Type Reasn 20 P a g e