Exeter and Its Region
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... surface blatantly defies the underlying structure . Such surfaces of erosion or planation have long attracted the attention of workers in the peninsula , and two main groups of surfaces have been distinguished . Above 700 feet O.D. it ...
... surface . Thus although the exact mode of origin of the surfaces and their age is still the subject of debate it ... surface and GEOMORPHOLOGY 33.
... surface and this may similarly reflect the former existence of permafrost , and the presence of ferruginous bands about seven feet below the surface of the same area have been attributed to layered permafrost . In many sections there ...