Dab tsi ua rau cov pob zeb ua puag ncig?

2024 Tus sau: Miles Stephen | [email protected]. Kawg hloov kho: 2023-12-15 23:36

Kev puas tsuaj ua rau pob zeb zom thiab ua rounder, tab sis puas qhov sib tsoo txo qhov loj ntawm pob zeb los yog nws me dua pob zeb puas yooj yim dua thauj? Ua ntej, abrasion ua rau a pob zeb puag ncig . Tom qab ntawd, tsuas yog thaum lub pob zeb yog du, puas abrasion ua kom nws me me nyob rau hauv txoj kab uas hla.

Yog li ntawd, yog vim li cas muaj ntau lub pob zeb puag ncig?

Qhov no yog vim tias cov chaw no muaj thaj tsam ntau dua li qhov ntau dua puag ncig qhov chaw muaj. C Cov duab ntawm lub pob zeb uas muaj qhov tsawg kawg nkaus ntawm thaj chaw ntawm nws qhov ntim yog a puag ncig puab. Yog li ntawd, huab cua thaum kawg ncig tawm ntawm jagged npoo thiab ntse ces kaum ntawm lub pob zeb.

Ib yam li ntawd, vim li cas cov pob zeb tiaj tus? Nws yog qhov pom ntau heev pom pob zeb lossis ballast ntawm qee qhov kev lag luam tiaj tus lub ru tsev. Nyob rau hauv lub ru tsev no, cov pob zeb los yog pob zeb yog muab ib txheej ntxiv ntawm kev tiv thaiv los ntawm cov khoom los tiv thaiv cov khoom siv los ntawm UV raug uas pab tiv thaiv kev tawg thiab tawg.

Ib yam li ntawd, cov pob zeb puag ncig hu ua dab tsi?

Lub concretion yog ib qho nyuaj, compact loj ntawm cov teeb meem tsim los ntawm nag lossis daus ntawm cov ntxhia cement nyob rau hauv qhov chaw nruab nrab ntawm cov khoom, thiab pom nyob rau hauv sedimentary pob zeb los yog av. Concretions feem ntau yog ovoid los yog kheej kheej nyob rau hauv cov duab, txawm hais tias cov duab tsis zoo kuj tshwm sim.

Vim li cas cov pob zeb ntawm ntug dej hiav txwv muaj qhov sib npaug?

Dej thiab xuab zeb polish me me pob zeb rau hauv du, puag ncig cov duab. Raws li cov asymmetrical pebbles nyiam nyob ntawm lawv sab tiaj, cov no sab tau eroded ntau dua los ntawm kev cuam tshuam ntawm cov xuab zeb thiab cov pob zeb me me, nce flatness hauv lub sijhawm.