Role and nature of time in geomorphology?
Answers
time is a fundamental concept given the traditional preoccupation with landscape change over time
until recently geomorphologists have deferred the study of material properties and process mechanics to engineers
there is no geomorphic time scale, that is, there are standard time periods besides the divisions of the geologic time scale, which are based on the age of rocks and sediments (i.e., mostly fossil evidence)
thus geomorphologists have tended to treat time in a relative way as discussed below
there is a broad positive correlation between the size of a landscape unit and the duration of change
e.g. ripples change quickly, dunes less quickly; or rills vs. gullies vs. stream channels
thus the relevant time period can vary with nature of a study (e.g. process versus climatic geomorphology). I hope so it was helpful.
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