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Q 1: Write ( √ ) or ( × ) on the following statements,
and correct the "wrong" word(s):
1) Resting trace fossils are formed by animal seeking foods ( )
2) Graded bedding can be used as a paleocurrent and a way-up
indicators ( )
3) Neoformation of clay minerals is their transformation from
inherited clays ( )
4) Fine skewed sediment is composed of coarse grains (
)
5) Primary porosity develops in sandstone during diagenesis by
solution ( )
6) A prolate shaped gravel grain has length more than short
diameter (
)
7) Cataclastic breccia is formed due to shattering of rock owing to
meteorite impact ( )
8) Illite has a two-layered
structure with potassium ions in interlayer positions ( )
9) Monocrystalline quartz grains with unit extinction indicate
volcanic origin ( )
10) Litharenite is immature sediment that transported for a short
distance. ( )
Model Answer of Question No. 1
1) Resting trace fossils are formed by animal seeking foods (× )
2) Graded bedding can be used as a paleocurrent and a way-up
indicators (× )
3) Neoformation of clay minerals is their transformation from
inherited clays (× )
4) Fine skewed sediment is composed of coarse grains (× )
5) Primary porosity develops in sandstone during diagenesis by
solution (× )
6) A prolate shaped gravel grain has length more than short
diameter (√ )
7) Cataclastic breccia is formed due to shattering of rock owing to
meteorite impact (× )
8) Illite has a two-layered
structure with potassium ions in interlayer positions (× )
9) Monocrystalline quartz grains with unit extinction indicate
volcanic origin (√
)
10) Litharenite is immature sediment that transported for a short
distance. (√ )
Q 2: Choose the correct word between brackets:
1) Quartzose diamictite is composed of
………………… ultrastable clasts (90%, 10%, 50%)
2) Very fine grains (dust) is moved by strong
eddies as (saltation, suspension, rolling)
3) Polycrystalline, elongated quartz grains
indicate ………………….. source rock
(volcanic,
metamorphic, hydrothermal)
4) In alkaline, oxidizing condition, iron is
present as ………………….. (ferrous, ferric, not existed), that give ……………………. (red,
green, blue) color to the rock/sediment.
5) …………………… consist of a rounded upstream
end, which flares downstream and merges into the bedding plane (Flute marks, scour marks, bounce
marks)
Model Answer of Question No. 2:
1) Quartzose diamictite is composed of …………………
ultrastable clasts (90%, 10%, 50%)
2) Very fine grains (dust) is moved by strong
eddies as (saltation, suspension,
rolling)
3) Polycrystalline, elongated quartz grains
indicate ………………….. source rock
(volcanic, metamorphic, hydrothermal)
4) In alkaline, oxidizing condition, iron is
present as ………………….. (ferrous, ferric, not existed), that give
……………………. (red, green, blue) color to the rock/sediment.
5)…………………… consist of a rounded upstream end,
which flares downstream and merges into the bedding plane (Flute marks, scour
marks, bounce marks)
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