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Extra info for A Relation Between Distance and Radial Velocity Among Extra-Galactic Nebulae

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The sandstone matrix can be classified as a litharenite or feldspathic lithareni~eafter Folk (1968). The pebble (clast) percentage has been roughly estimated in the field using Clifton's (1973) measure for pebble segregation. where 90-100 per cent describes an openwork conglomerate. 7(&90 per cenl a clast supported conglomerate with some matrix, 50-70 per cent a matrix supported conglomerate with 50 to 70 per cent clasts etc. Six per cent of the beds measured for pebble segregation belong to the 9 S 1 0 0 per cent class.

The base of the beds is always strongly erosive and mudstone layers are never found draping the base. The sandstones are either structureless or show a more or less pronounced parallel bedding conformable with the channel base. Characteristically the channels are filled with a consecutive sequence of such beds, each one showing very good vertical as well as lateral grading, and becoming thinner and finer-grained upwards. This results in an overall vertical and lateral grading of the channel fill.

The beds vary in thickness from a few centimetres to about 10 m and in one exceptional case to more than 20 m (section 14=, Appendi). The bases of the individual beds are always sharp; the tops are normally sharp hut may be gradational to overlying mudstone. The sand fraction covers grain sizes from very f i e to coarse sand with medium sand being the most common. The more fine-grained sandstones may, however, have a large content of silt. The sandstones are composed of angular quartz grains and small amounts of feldspar and mica.

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A Relation Between Distance and Radial Velocity Among Extra-Galactic Nebulae by Hubble E.


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