Staagmite thiab stalactite: txoj kev tsim, zoo sib xws thiab sib txawv

2024 Tus sau: Henry Conors | [email protected]. Kawg hloov kho: 2024-02-12 07:47

Peb coob leej ntseeg hais tias pob zeb thiab roob yog cov tawv, thiab peb feem ntau siv cov lus no ua epithets. Tab sis yog hais tias lawv tiag tiag li, ces ib tug neeg yuav tsis pom ib tug stalagmite thiab stalactite. Qhov no yog vim lub fact tias ib tug poob dej, ntws los ntawm lub thickness ntawm lub pob zeb, nqis los rau hauv lub qhov tsua, nqa ib tug insignificant limestone. Tom qab ntawd nws hla lub ntiaj teb mus rau hauv cov khaubncaws sab nraud povtseg ntawm lub mantle thiab evaporates nyob rau hauv lawv nyob rau hauv lub zog ntawm lub tshav kub ntawm lub ntiaj teb lub hauv paus. Tab sis cov khoom uas nws rub nrog tseem nyob rau hauv pem teb los yog qab nthab ntawm lub qhov tsua los ntawm qhov uas peb poob tswj kom nkag mus.

Stalactite thiab stalagmite yog limestone outgrowths uas tau tsim nyob rau hauv cov txheej txheem ntawm dej alluvium. Txawm li cas los xij, cov dej siab tsis tseem ceeb, yog li cov qauv no muaj kev loj hlob qeeb. Ntxiv rau kev ntxuav limestone tob rau hauv lub qhov tsua, cov tee kuj khaws cov calcium thiab qee yam khoom siv. Qhov no tuaj yeem piav qhia ntau yam xim thiab ntxoov ntxoo uas stalagmite thiab stalactite muaj.

Nyob ntawm qhov ceev uas cov dej nkag mus, cov qhov tsua raug tsim los txiav txim siabkev loj hlob. Thaum nws ntws maj mam, ib qho stalactite tshwm, uas muaj nws keeb kwm ntawm lub qab nthab. Thiab yog hais tias cov dej drips sai txaus kom tsis txhob nyob rau saum nws tus kheej thiab ntxuav ntau yam khoom mus rau hauv pem teb ntawm lub qhov tsua, ces ib tug stalagmite yog tsim. Qee lub sij hawm nws tshwm sim tias lub hnub nyoog ntawm cov kev loj hlob no nce mus txog qib siab, thiab lawv tau muab tso rau hauv ib kem. Txij li thaum lawv lub union tau tshwm sim, lawv dhau los ua stalagnates. Qhov tsawg tshaj plaws pom yog li cas lub chamber hauv lub qhov tsua tau muab faib ua ob chav sib cais los ntawm kev tsim stalagnate. Qhov no yog hu ua draping. Nws yog tsim nyog sau cia tias cov pob zeb ci ntsa iab feem ntau tuaj yeem pom hauv stalagnates. Cov no yog cov pob zeb siv lead ua, uas yog tsim nyob rau hauv lub roob. Drapery thiab stalagnates feem ntau tawg kom tau cov pob zeb ci ntsa iab.

Txawm tias txhua qhov sib txawv, stalagmite thiab stalactite muaj qhov sib xws. Nws nyob hauv qhov muaj pes tsawg leeg. Tsis muaj stalactites thiab stalagmites sib txawv hauv ib lub qhov tsua. Tag nrho cov ntsiab lus uas lawv tau tsim yuav zoo sib xws. Kev loj hlob ntawm formations yog txheej txheem ntev. Ib centimeter ntawm stalactite tuaj yeem tsim hauv ib puas xyoo, lossis ntau dua. Thiab stalagmites feem ntau loj hlob ntev dua. Qhov no yog vim dej qeeb thaum nws mus los ntawm pob zeb. Thiab tsis tshua muaj nws muaj peev xwm tswj tau txaus siab kom poob rau hauv pem teb ntawm lub qhov tsua nrog rau cov limestone.

Koj tsis tuaj yeem xav txog qhov zoo nkauj npaum li cas cov stalactites thiab stalagmites zoo nkauj npaum li cas. Daim duab muaj peev xwm qhia tau lawvCov tsos mob yog nyob rau hauv cov ntsiab lus, tab sis thaum koj saib lawv los ntawm ntau lub ces kaum los yog ci lub teeb, lawv zoo li hloov lawv cov xim thiab cov duab.

Muaj lwm txoj kev xav ntawm kev tsim cov qhov tsua loj hlob. Nws tau tshaj tawm xyoo 1970 thiab tsom mus rau qhov tseeb tias stalactites thiab stalagmites tau tsim nyob rau hauv qhov kev txiav txim ntawm cov fungus tshwj xeeb. Thaum ib puag ncig zoo tsim rau nws txoj kev loj hlob, nws pib tsim. Txawm li cas los xij, yog tias qhov kev xav no yog qhov tseeb, yog vim li cas ho tsis tau tsim lub qhov tsua nrog stalactites? Txawm li cas los xij, tsis muaj teeb meem dab tsi zais cov ntsiab lus tshwj xeeb hauv qhov tsua hauv lawv tus kheej, lawv zoo siab rau lub qhov muag ntawm cov neeg zoo siab uas muaj sijhawm pom lawv tsawg kawg ib zaug.