Video: Kuv tuaj yeem nrhiav shale pob zeb nyob qhov twg?
2024 Tus sau: Miles Stephen | [email protected]. Kawg hloov kho: 2023-12-15 23:36
Shale Cov ntaub ntawv nyob rau hauv dej hiav txwv tob heev, lagoons, pas dej thiab swamps qhov twg cov dej tseem txaus kom cia cov av nplaum zoo heev thiab cov av qeeg los nyob rau hauv pem teb. Geologists kwv yees qhov ntawd shale sawv cev yuav luag ¾ ntawm sedimentary pob zeb ntawm lub ntiaj teb daim tawv nqaij.
Tsuas yog li ntawd, shale pob zeb nyob qhov twg?
Shale yog ib tug nplua-grained sedimentary pob zeb uas cov ntaub ntawv los ntawm compaction ntawm silt thiab av nplaum-loj ntxhia hais tias peb feem ntau hu ua "dej." Qhov no muaj pes tsawg leeg qhov chaw shale nyob rau hauv ib qeb ntawm sedimentary pob zeb hu ua "mudstones." Shale yog txawv ntawm lwm cov av nkos vim nws yog fissile thiab laminated.
Tsis tas li ntawd, dab tsi minerals pom nyob rau hauv shale pob zeb? Shale yog ib qho zoo-grained, clastic sedimentary pob zeb, muaj li ntawm av nkos uas yog ib tug sib tov ntawm flakes ntawm av nplaum minerals thiab me me (silt-sized particles) ntawm lwm yam minerals, tshwj xeeb tshaj yog quartz thiab calcite.
Tsis tas li ntawd paub yog, koj ua li cas txheeb xyuas lub pob zeb shale?
Shale yog ib tug nplua-grained pob zeb ua los ntawm compacted av thiab av nplaum. Lub ntsiab yam ntxwv ntawm shale yog nws fissility. Hauv lwm lo lus, shale nkag mus rau hauv nyias txheej. Dub thiab grey shale muaj ntau, tab sis cov pob zeb tuaj yeem tshwm sim hauv txhua yam xim.
shale pob zeb nyuaj npaum li cas?
Shale raws li tau teev tseg hauv Table 2.8 yog ib qho zoo-grained, nyuaj , laminated low-permeable mudrock, muaj av nplaum ntxhia, thiab quartz thiab feldspar silt. Shale yog lithified thiab fissile. Nws yuav tsum muaj tsawg kawg yog 50% ntawm nws qhov ntsuas <0.062 hli. Lub sij hawm no yog txwv rau argillaceous, los yog av nplaum-cov kabmob, pob zeb.
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