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ID number:369407
 
Author:
Evaluation:
Published: 21.01.2006.
Language: Latvian
Level: Elementary school
Literature: n/a
References: Not used
Extract

Nogulumi, to veidi.

al – alūvijs jeb aluviālie nogulumi – tekošu ūdeņu, parasti upju nogulumi.

1)Gultnes al – uzkrājas upes gultnē un laika gaitā izlīdzina upes dibenu. Nogulumus veido oļi un smiltis.
2)Palienes al – uzkrājas pavasaros palienēs, upei pārplūstot. To veido smalka smilts, mālsmilts, smilšmāls.

al nogulumi upes ielejās veido akumulatīvās terases.

b – purvu nogulumi.

del – delūvijs – bezgultnes ūdens plūsmu izgulsnētie iežu un augsnes daļiņu nogulumi pauguru piekājē. Nogulumu mehāniskais sastāvs mainās uz leju pa nogāzi no rupjāka materiāla līdz smalkākam.

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