Video: Cov pob zeb txheej txheem nyob rau hauv kem geology li cas?
2024 Tus sau: Miles Stephen | [email protected]. Kawg hloov kho: 2023-12-15 23:36
Hauv ib geological kab , pob zeb txheej yog koom los ntawm cov laus mus rau qhov tshiab, nrog cov laus tshaj plaws pob zeb nyob ze rau lub ntiaj teb lub hauv paus thaum lub tshiab tshaj plaws pob zeb nyob ze rau lub ntiaj teb nto. Hais txog cov txheej txheem zoo li no, geologists thiab anthropologists tuaj yeem txiav txim siab lub sijhawm uas cov fossils tau txais.
Tsis tas li ntawd, lub geological kem tsim tau li cas?
Cov Geological Kem feem ntau yog piav raws li cov txheej txheem ntawm cov pob txha pob txha hu ua strata, nrog cov pob txha yooj yim tshaj plaws nyob rau hauv qab thiab ntau qhov nyuaj rau saum. Nws muab faib ua ob peb geological lub sijhawm, raws li cov pob txha muaj nyob hauv lawv. Lawv tau tsim los ntawm Biblical Geologist Nicolaus Steno txog 1669.
Tom qab ntawd, lo lus nug yog, dab tsi yog qhov geological kem siv rau? Cov geological kab yog ib qho kev tsim kho ntawm lub ntiaj teb keeb kwm raws li lub hnub nyoog ntawm cov pob txha pob txha tau npaj los ntawm lub tswv yim ntawm qhovntsej thiaj tsis mob nrog kev hloov kho. Cov fossils nyob rau hauv strata yog siv rau txiav txim hnub txheeb ze, qhov yooj yim cov pob txha loj dua cov pob txha.
Kuj Paub, cov txheej ntawm pob zeb yog dab tsi?
Pob zeb txheej tseem hu ua strata (lub plural daim ntawv ntawm Latin lo lus stratum), thiab stratigraphy yog kev tshawb fawb ntawm strata. Stratigraphy cuam tshuam nrog tag nrho cov yam ntxwv ntawm txheej pob zeb ; nws suav nrog kev kawm txog yuav ua li cas cov no pob zeb cuam tshuam rau lub sijhawm.
Dab tsi yog geological kem txhais tau tias?
Txhais ntawm geological kab . 1: Daim duab columnar uas qhia pom cov pob zeb tsim ntawm ib cheeb tsam lossis cheeb tsam thiab uas tau npaj los qhia lawv cov kev sib raug zoo rau cov subdivisions ntawm geological sij hawm. 2: qhov sib lawv liag ntawm pob zeb tsim hauv a geological kab.
Pom zoo:
Yuav ua li cas cov txheej txheem ntawm cell faib nyob rau hauv eukaryotes feem ntau zoo ib yam li cell faib nyob rau hauv prokaryotes?
Tsis zoo li eukaryotes, prokaryotes (uas suav nrog cov kab mob) tau txais ib hom kev faib cell hu ua binary fission. Hauv qee qhov, cov txheej txheem no zoo ib yam li mitosis; Nws yuav tsum tau rov ua dua ntawm cov cell chromosomes, cais ntawm cov theej DNA, thiab kev sib cais ntawm niam txiv cell cytoplasm
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Feem ntau hom pob zeb tsis ua haujlwm zoo hauv pob zeb tumbler. Yog tias koj sib tov zoo tumbling ntxhib nrog pob zeb uas qis dua qib qis, cov khoom, cov npoo ntse thiab tawg ntawm cov khoom hauv qab-tumbling-qib tej zaum yuav ua rau cov polish ntawm txhua lub pob zeb hauv lub thoob
Koj tuaj yeem ua li cas yog tias koj tsis paub tias txheej twg yog nyob rau hauv cov txheej txheem rho tawm?
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Dab tsi yog txheej txheem ntuj tsim ua rau ib hom pob zeb hloov mus rau lwm hom?
Peb hom pob zeb tseem ceeb yog igneous, metamorphic thiab sedimentary. Peb txheej txheem uas hloov ib lub pob zeb mus rau lwm qhov yog crystallization, metamorphism, thiab yaig thiab sedimentation. Txhua lub pob zeb tuaj yeem hloov mus rau lwm lub pob zeb los ntawm kev dhau los ntawm ib lossis ntau dua ntawm cov txheej txheem no. Qhov no tsim lub voj voog pob zeb
Cov pob zeb hauv av twg tuaj yeem tsim cov pob zeb zoo li lub raum?
Hematite (los yog haematite) Kuj tseem muaj ntau hom hematite, qee yam yog: raum ore, ib qho loj, botryoidal (lumpy) lossis reniform (lub raum zoo li tus) daim ntawv; specularite, micaceous (flaky) daim ntawv; oolitic, ib daim ntawv sedimentary tsim los ntawm cov nplej me me; liab ochre, ib daim ntawv liab earthy