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How are these beds inclined, in general, and relative to the contour lines?
They are horizontal, and so follow the contour lines.
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On a map, these horizontal beds appear to what upstream?
Horizontal beds V upstream. But follow contours.
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How are these beds inclined and how can you tell?
The beds are horizontal. They follow the contours.
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What shape is this structure - how is it dipping? How can you tell?
This is a vertical sheet - a dyke. It is not deflected or distorted by topography because it is going straight down into the ground.
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What is the attitude of the rocks H2, H3, H4 How can you tell?
They are steeply/sub vertically dipping -so are not distorted by topography.
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Dipping planes V in which direction as they cross high ground, such as a ridge?
They V up dip.
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Planes that dip up-valley V which way in river valleys?
Strata that dips up stream V's upstream
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A bed dips upstream at a steeper gradient than the river bed... describe its outcrop.
The outctop will V upstream, but the 'arms' of the V will make a wider angle than the contour lines of the valley walls...
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A bed dips upstream, at a gradient lower than the river bed. Describe its outcrop.
The outcrop will V upstream. But the interlimb angle of the V will be tighter than that of the valley-wall contours.
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A bed dips downstream at the same gradient as a the river floor. What will it's relationship be to the contours on the map?
It will cut straight through contours. Similar in some ways to a vertical dyke. But - it will be recognisable by its context (in a river valley) where it will follow the river trace.
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What will the outcrop pattern be across a river valley if a bed dips more steeply than the valley?
It will V downstream.
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