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Block diagram of the cuestas and lowlands of Central England.

Lowlands of Central England

Block diagram of the cuestas and lowlands of Central England.

Hog-backs (RR) changing into cuestas (CC) and these into steps (HH) by progressive flattening of strata; UU, oldland; TT, inner lowland; SS, second lowland; P, plateau between steps; V, nose; Z, outlier.

Hog-back Diagram

Hog-backs (RR) changing into cuestas (CC) and these into steps (HH) by progressive flattening of strata;…

Cross-section of the Michigan Basin showing the rimming cuestas which are largely submerged.

Michigan Basin

Cross-section of the Michigan Basin showing the rimming cuestas which are largely submerged.