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