Thaum twg cov kev sib tw tsim?
Thaum twg cov kev sib tw tsim?

Video: Thaum twg cov kev sib tw tsim?

Video: Thaum twg cov kev sib tw tsim?
Video: thaum twm mam tseg txoj kev haus npias tsom xyooj nkauj tawm tshiab 2023 2024, Lub peb hlis ntuj
Anonim

Glacial striations los yog striae yog khawb los yog gouges txiav rau hauv txaj los ntawm glacial abrasion. Cov khawb thiab khawb no tau pom thawj zaug vim yog qhov tshwm sim ntawm lub qhov dej khov txav hauv lig 18th caug xyoo thaum Swiss alpinists thawj zaug cuam tshuam lawv nrog cov dej khov.

Kev sib tw nyob qhov twg?

Glacial grooves and striations are gouged or scratched mus rau bedrock as the glacier move down stream. Pob zeb thiab pob zeb ntxhib tau daig hauv qab cov dej khov nab kuab, thiab ua rau thaj av tawg thaum lub glacier thawb thiab rub lawv mus.

Kev sib tw ua li cas?

Raws li cov dej khov ntws hla av, lawv muab cov pob zeb thiab cov pob zeb nkag mus rau hauv cov dej khov. … Sij hawm dhau mus, lub glacier txav hla pob zeb thiab sediment, tawm striations los yog striae, nyob rau hauv pob zeb nto uas yuav qhia tau hais tias lub glacier twb ntws.

Dab tsi yog qhov txhais ntawm striation hauv thaj chaw?

Ib qho ntawm ob peb, ntev, ncaj, kab sib npaug lossis grooves hauv cov pob zeb hauv av, tsim los ntawm pob zeb, pob zeb, thiab pebbles embedded rau hauv lub glacier uas tau hla saum npoo..

cov cim striation tshwm sim los ntawm dab tsi?

Striated toolmarks (tseem hu ua striae, kev sib txhuam cov cim, abrasion marks, lossis kos cim) - tsim thaum ib lub cuab yeej muab tso rau lwm yam khoom thiab txav mus rau qhov sib npaug mus rau thiab hla cov khoom siv siabCov striations muaj xws li qhov tshwm sim ntawm qhov chaw contour variations.

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