Under extreme compressive stresses and pressure, marine sedimentary rocks were uplifted, creating characteristic recumbent folds, or nappes, and thrust faults. As the rising peaks underwent erosion, a layer of marine flysch sediments was deposited in the foreland basin, and the sediments became involved in younger nappes (folds) as the orogeny progressed. Coarse sediments from the continual uplift and erosion were later deposited in foreland areas as molasse. The molasse regions in Switzerland and Bavaria were well-developed and saw further upthrusting of flysch. COUNT 4
QSN1 What was uplifted from extreme compressive stresses and pressure?  ANS1 marine sedimentary rocks QSN2 When did the layer of marine flysch sediments get deposited in the foreland basin? ANS2 As the rising peaks underwent erosion QSN3 What were later deposited in foreland areas as molasse? ANS3 Coarse sediments QSN4 Switzerland and Bavaria saw a further upthrusting of what? ANS4 flysch