Cov pob zeb Metamorphic tau tsim los ntawm qhov siab thiab cua sov qis dua saum npoo av. Ntau lub pob zeb siv hauv kev tsim qauv thiab tsim qauv yog metamorphic, zoo li slate thiab marble. Kev txiav txim siab seb lub pob zeb puas hloov pauv, tsis zoo li cov nplaim taws los yog cov dej ntws, tuaj yeem nyuaj. Nrog kev ua tib zoo saib xyuas cov nplej thiab cov nplais uas ua cov pob zeb hloov pauv, koj tuaj yeem paub qhov txawv ntawm cov pob zeb uas tsis muaj zog thiab cov pob zeb, thiab tom qab ntawd txiav txim siab seb hom pob zeb metamorphic nws yog dab tsi.
Cov kauj ruam
Txoj Kev 1 ntawm 2: Txiav txim siab seb Pob Zeb puas yog Metamorphic
Kauj Ruam 1. Tuav lub pob zeb mus rau qhov pom kev thiab saib seb nws puas muaj ci lossis ci
Cov pob zeb Metamorphic zoo li muaj cov luster ntau dua li cov nplaim taws lossis cov pob zeb sedimentary. Hauv qhov pom kev, koj yuav tsum muaj peev xwm qhia seb lub pob zeb muaj qhov ua tau zoo tag nrho rau nws.
Tsis yog txhua lub pob zeb metamorphic muaj cov lus ci lossis ci ci. Cov pob zeb "Tsis-foliated" feem ntau opaque thiab npub xim
Kauj Ruam 2. Txheeb xyuas kab txaij thiab kab zauv
Yog tias koj pom muaj kev hloov pauv loj hauv pob zeb, koj yuav muaj feem cuam tshuam nrog cov pob zeb metamorphic. Cov qhab no yuav ua rau me ntsis, tab sis lawv yuav zoo ib yam li tau piav qhia meej cov kab xev los yog muaju uas zoo li ua rau me ntsis "leeg" thoob plaws hauv pob zeb.
Cov no tsis zoo li txheej txheej ntawm cov pob zeb hauv av, uas muaj kev ntxhib los mos rau lawv, thiab zoo li lub pob zeb tau ua los ntawm cov khoom sib dhos
Kauj Ruam 3. Saib rau thaj ua rau thaj loj ntawm cov dot xav tau
Cov pob zeb hauv pob zeb uas muaj ntau qhov me me, cov ntsiab lus xav tau yog qhia txog cov pob zeb metamorphic. Ib cag los ntawm qhov ua tau zoo nyob ib puag ncig, cov pob zeb hloov pauv feem ntau muaj qhov pom zoo me me ntawm cov yoov me me. Cov no yog cov pob zeb ci ci ci, tsis yog qhov ci zoo ntawm cov hlau zoo lossis cov ntxhia.
- Yog tias koj tsis tuaj yeem pom qhov pom me me, koj tuaj yeem siv lub tshuab tsom iav kom pom lawv nyob hauv ntau yam.
- Cov pob zeb Metamorphic zoo li granite tsis muaj cov pab pawg, tab sis lawv muaj cov txiaj ntsig zoo kawg li ntawm cov muaju.
Kauj Ruam 4. Saib rau ib qho me me hauv cov pob zeb
Feem ntau cov pob zeb metamorphic yuav muaj cov txiaj ntsig tseem ceeb ntawm cov nplej pom, tshwj tsis yog cov slate thiab ib txhais tes ntawm cov ntaub ntawv tsawg dua ntawm cov pob zeb metamorphic. Cov no yuav tsis tas yuav muaj kev cuam tshuam zoo ib yam li cov muaju, tab sis lawv yuav muaj qhov ntxhib thiab zoo nkauj.
Slate yog pob zeb tshwj xeeb tshaj plaws, vim nws muaj ntau yam zoo sib xws nrog cov pob zeb ua pob zeb
Kauj Ruam 5. Saib rau cov qauv tsim hauv cov nplej
Saib rau thaj ua rau thaj ntawm pob zeb uas zoo li ua kab ua ke ntau dua li lwm cov pob zeb. Ua tib zoo saib xyuas cov nplej kom pom tias muaj tus qauv ib sab ntawm qhov pom tau ntau dua kab txaij thiab kab.
Yog tias cov nplej zoo li tau teeb tsa ntau dua hauv ib qho, lossis zoo li "ntws" tusyees ib puag ncig pob zeb, nws zoo li yuav hloov pauv
Txoj Kev 2 ntawm 2: Txheeb Xyuas Hom Metamorphic Pob Zeb
Kauj Ruam 1. Siv cov hlua los txiav txim seb lub pob zeb puas tawg lossis tsis tawg
Muaj ob pawg tseem ceeb ntawm cov pob zeb metamorphic: foliated thiab non-foliated. Foliated pob zeb muaj cov kab txaij lossis cov hlua uas feem ntau cuam tshuam nrog cov pob zeb metamorphic, thaum cov pob zeb uas tsis yog cov ntoo tsis muaj qhov tshwj xeeb no.
- Cov kab txaij lossis cov kab yuav nyuaj rau pom, yog li nco ntsoov ua tib zoo saib rau txhua cov lus qhia uas muaju zoo li tau qhia.
- Cov pob zeb uas muaj ntau yam sib txawv muaj xws li slate, phyllite, thiab gneiss.
- Ob qhov tsis sib xws uas tsis muaj kev sib haum xeeb yog cov pob zeb marble thiab quartzite.
Kauj Ruam 2. Txheeb xyuas cov quartzite los ntawm nws cov xim daj lossis xim dawb
Yog tias pob zeb muaj xim daj rau nws uas yuav luag pom-dhau hauv qee qhov, nws yuav yog quartzite. Quartz muaju yuav luag meej, thiab lawv zoo li nyob li ntawd tom qab metamorphosis. Quartzite tsis yog cov ntoo, yog li koj yuav tsis pom ib pawg lossis kab txaij hauv pob zeb.
Qhov xim zoo nkauj ntawm quartzite feem ntau zoo li yuav luag daj, vim yog tshuaj lom xim thiab tsis huv hauv pob zeb
Kauj Ruam 3. Saib seb lub pob zeb puas raug puas ntsoog los ntawm kev kuaj xyuas qhov pom thiab qhov tsaus ntuj
Cov pab pawg lossis cov ntawv sib piv uas zoo li yuav luag zoo ib yam dub thiab dawb yog qhov qhia txog kev mob qog noj ntshav. Gneiss yog tsim los ntawm cov ntshiab quartz thiab cov xim muaj xim dub, ua rau muaj qhov sib txawv ntawm qhov sib txawv. Cov pab pawg sib txawv tsawg dua qhia tias pob zeb yuav yog lwm yam.
Lub pob zeb gneiss yuav muaj cov xim txho rau nws tag nrho, nrog rau qhov tsaus ntuj thiab lub teeb tsoo txiav los ntawm cov xim daj
Kauj Ruam 4. Kos lub pob zeb tawm tsam lub raj mis iav kom txiav txim siab nws qhov muag muag
Maj mam muab lub pob zeb pov rau iav uas koj tuav ruaj khov. Yog tias koj tsis tuaj yeem tawm qhov kos kos ntawm iav nrog pob zeb, tej zaum koj yuav ua haujlwm nrog slate, marble, lossis phyllite. Txhua ntawm cov pob zeb metamorphic no mos txaus uas nws tsis tuaj yeem khawb iav thaum thov ntawm qhov siab me me. Gneiss thiab quartzite, txawm li cas los xij, tuaj yeem txhuam ob lub iav nrog lub zog me me.
Koj tsuas yog yuav tsum tau rub lub pob zeb tawm tsam kwv yees li 2 hli (0.079 hauv) iav
Kauj Ruam 5. Txheeb xyuas marble los ntawm kev nrhiav cov nplej uas zoo li tsis muaj qauv
Yog tias lub pob zeb tsis tuaj yeem khawb iav, pom meej meej, tab sis cov nplej tsis zoo li tsis muaj qhov qhia meej lossis qauv, feem ntau koj yuav ua haujlwm nrog marble. Marble pom nyob rau hauv xwm feem ntau zoo li "dawb huv" dua li cov pob zeb marble pom hauv cov tsev thiab cov mlom, uas tuaj yeem cuam tshuam thaum xub thawj.
- Tus yuam sij txhawm rau txheeb xyuas cov pob zeb yog pom qhov muaju loj uas zoo li faib tsis raug, vim nws tsis yog daim ntawv ntawm cov pob zeb metamorphic.
- Marble tuaj yeem sib txawv xim, tab sis feem ntau cov xim yog dawb thiab txho.
Kauj Ruam 6. Txheeb xyuas seb lub pob zeb puas yog pob zeb los ntawm kev nrhiav cov ntawv tiaj
Yog tias lub pob zeb tsis tuaj yeem txiav iav thiab muaj cov npoo ntxhib uas zoo li cov pob zeb, nws yuav luag txhua yam. Koj yuav tsum tuaj yeem pom cov ntawv sib faib kom meej hauv pob zeb nws tus kheej, uas tau suav tias yog kev sib sau ua ke, txawm hais tias lawv tsis zoo li cov qhab hauv gneiss.
- Slate feem ntau yog grey, dub, lossis ntsuab. Cov xim grey yog qhov ntxoov ntxoo sib txawv, feem ntau hu ua "slate."
- Cov txheej hauv slate tsis yog tsim los ntawm kev tso dej, tab sis los ntawm lub koom haum ntawm cov kua siv lead ua kua mus rau hauv txoj kab ncaj nraim hauv qab lub siab.
Kauj Ruam 7. Paub qhov txawv phyllite los ntawm slate los ntawm kev tshuaj xyuas cov pom muaju thiab cov xim ntsuab
Crystals hauv slate me me dhau los pom nrog lub qhov muag liab qab, thaum phyllite muaj qhov zoo nkauj dua, txawm hais tias nws tseem muaj txheej zoo li slate. Ib qho ntxiv, koj yuav pom cov xim ntsuab sib sib zog nqus hauv phyllite ntau dua li koj yuav pom hauv slate, txawm hais tias tsis yog txhua phyllite ntsuab.
