relieful structural
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RELIEFUL STRUCTURAL
MODUL DE DISPUNERE AL STRATELOR
+
1. DURITATEA ROCII
2. GROSIMEA STRATELOR
3. PERMEABILITATEA ROCII
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Bazine de sedimentare: necutate sau slab deranjate tectonic, ulterior înălţate:
PodişulMoldovei
Podişul
TransilvanieiPodişul
Getic+
• Regiuni cu cutări mai ample(Subcarpaţii)
• Carpaţii (excepţie ! M-ţii flişului)
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Relieful structural din Podişul Moldovei
Dispunere monoclinală a stratelor sedimentare;
Înclinare de 7 – 8 m/km, pe direcţie NV – SE;
Intercalaţii de roci dure (gresii şi calcare oolitice)
Cel mai tipic relief structuraldin România
Cuestele (Emm. de Martonne, 1924)•Coasta Iaşilor (Repedea)•Coasta Cotnari – Hârlău – Botoşani•Coasta Ibăneştilor
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Spinările cuestelor:• plăci dure de gresii sarmaţiene•Pod. Bârladului, Sucevei•Colinele Tutovei
Văile structurale:
subsecvente: Bahlui, Bîrladul sup., Racova, Vasluiconsecvente: Prut, sectoare ale văilor Başeu, Volovăţ Jijia, Bârlad
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Relieful structural din Podişul Transilvaniei
Litologie variată:eroziune diferenţială
Structuri diferite: monoclin cute largi domuri cute diapire
•Podişul Someşan•Podişul Târnavelor•Câmpia Transilvaniei•Subcarpaţii Transilvaniei
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Podişul Someşan
-cel mai reprezentativ
-dominat de cueste, aliniamente de cueste
-între Cluj şi Huedin
-Ţara Lăpuşului (Posea Gr.)
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Relieful structural din Podişul Târnavelor
-cuestele de pe dreapta Târnavelor, Secaşelor
-cuestele din lungul Oltului şi Mureşului
-domurile: al doilea element structural
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Relieful structural din Câmpia Transilvaniei-mai slab evidenţiat-predomină argilele şi marnele – procese de versant-tuf, gresie - cueste
Relieful structural din Subcarpaţii Transilvaniei-mai complex (diapirism)-predomină aglomerate vulcanice, conglomerate, gresii şi nisispuri slab cimentate-cueste spate în spate, faţă în faţă, aliniamente-inversiuni de relief: văile Homoroadelor
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Relieful structural din Subcarpaţi
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loess
calcare sarmatice
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1 – conglomerate, 2 – gresii, 3 – marne şi argile
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Relief structural în Munţii Ceahlău (Niculescu, 1957)
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