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Choose the correct item.
1. Clastic sedimentary rocks are made from ________________
A. pre-existing rocks
B. fragments
C. sediments
2. Sedimentary rocks mainly cover_________________
A. sea floor and land
B. ocean floor and land
C. shoreline and terrain
3. Beds are_______________
A. horizontal strata of sandstones and limestone
B. vertical layers of deposited sediments
C. horizontal sheets of deposited sediments
4.Coal is rich in __________________
A. oxygen
B. carbon
C. hydrogen
5. Lignite is _________________
A. hard black coal
B. soft brown coal
C. high-carbon coal
6.Coal forms as a result of _________________
A. weathering of rocks
B. chemical dissolution of minerals
C. dying of plants in wet acid conditions
8.Chalk is __________________
A. mudstone
B. sandstone
C. limestone
9.Which of the following CANNOT be the origin of limestone is__________
A. seawater reefs
B. seawater microorganisms
C. seawater minerals
10. These three minerals settle in the following sequence:
A. calcium carbonate, gypsum, sodium chloride
B. gypsum, calcium carbonate, sodium chloride
C. sodium chloride, calcium carbonate, gypsum
11.There are four main grain-size groups for clastic rocks:_____________
A. conglomerates, sandstones, siltstones, claystones
B. sandstones, siltstones, claystones, mudstones
C. conglomerates, sandstones, limestones, claystones
12.Sedimentary particles according to size are divided into ______________
A. two groups
B. three groups
C. four groups
13.Fine-grained sedimentary rocks are _____________________
A. mudstone, shale, orthoquartizite
B. mudstone, shale, siltstone
C. shale, arkose, greywacke
14.Rudites can be consolidated into natural concretes called______________
A. conglomerates and breccias
B. clasts and conglomerates
C. breccias and clasts
15.Conglomerates is a Latin word which means_________________
A. coarse
B. rubble
C. lumped together
16.Breccias is usually embodies in_________________
A. natural cement sand
B. solid rock
C. clay-rich matrix
17.The Earth’s crust is mainly made up of _______________
A. igneous rocks
B. sedimentary rocks
C. metamorphic rocks
18.An example of mechanical sediments is ________________
A. gravel
B. gypsum
C. limestone
19.Sedimentary rocks result from the following processes________________
A. weathering, erosion, deposition, cementation
B. erosion, transportation, cementation, compaction
C. weathering, transportation, deposition, lithification
20.Classification by grain size is applied to ________________
A. clastic sediments
B. debris
C. sand particles
21.The grain size of clastic rocks ranges from ___________________
A. 2 to 1/16
B. 1/16 to 1/256
C. 2 to 1/256
22.The main bulk composition of continental sedimentary rock is__________
A. shale
B. sandstone
C. conglomerate
23.Cemented mass of shelly debris is__________
A. chalk
B. sandstone
C. coquina
24.Another term for halite is ____________
A. rock gypsum
B. chalk rock
C. rock salt
25.Chemical deposits accumulate in desert lakes and______________
A. coastal salt flats
B. seashore salt areas
C. undersaturated seawaters
26.Sedimentary facies are ___________________
A. characteristic physical and chemical attributes
B. characteristic features of rocks
C. environmental features of rocks
Дата публикования: 2014-11-03; Прочитано: 486 | Нарушение авторского права страницы | Мы поможем в написании вашей работы!