Question 1

Which of the following types of sedimentary basins is most likely to develop where two plates pull apart?

Accepted Answer

A) flexural basins 
B) rift basins 
C) thermal sag basins 
D) All of the above are equally likely to develop. 
A) flexural basins 
B) rift basins 
C) thermal sag basins 
D) All of the above are equally likely to develop.

Question 2

Which of the following kinds of sandstone is the most poorly sorted?

Accepted Answer

A) arkose 
B) greywacke 
C) lithic sandstone 
D) quartz arenite 
A) arkose 
B) greywacke 
C) lithic sandstone 
D) quartz arenite

Question 3

Which of the following sedimentary environments is dominated by river currents and waves?

Accepted Answer

A) alluvial 
B) deep-sea 
C) deltaic 
D) desert 
A) alluvial 
B) deep-sea 
C) deltaic 
D) desert

Question 4

Which of the following is an example of a clastic sedimentary rock?

Accepted Answer

A) chert 
B) dolostone 
C) evaporite 
D) shale 
A) chert 
B) dolostone 
C) evaporite 
D) shale

Question 5

Which of the following is not a sedimentary structure?

Accepted Answer

A) bioturbation 
B) cross-bedding 
C) vesicles 
D) ripples 
A) bioturbation 
B) cross-bedding 
C) vesicles 
D) ripples

Question 6

What sort of sedimentary environments are floodplains?

Accepted Answer

A) desert 
B) glacial 
C) lake 
D) alluvial 
A) desert 
B) glacial 
C) lake 
D) alluvial

Question 7

Two common types of cements in sedimentary rocks are

Accepted Answer

A) calcium and chert. 
B) quartz and chert. 
C) quartz and silica. 
D) calcite and quartz. 
A) calcium and chert. 
B) quartz and chert. 
C) quartz and silica. 
D) calcite and quartz.

Question 8

Which of the following sediment sequences shows increasing grain size (left to right)?

Accepted Answer

A) sand,silt,clay 
B) silt,sand,mud 
C) mud,sand,pebble 
D) gravel,sand,silt 
A) sand,silt,clay 
B) silt,sand,mud 
C) mud,sand,pebble 
D) gravel,sand,silt

Question 9

Burial of sediments results in

Accepted Answer

A) decreasing pressure and decreasing temperature. 
B) decreasing pressure and increasing temperature. 
C) increasing pressure and decreasing temperature. 
D) increasing pressure and increasing temperature. 
A) decreasing pressure and decreasing temperature. 
B) decreasing pressure and increasing temperature. 
C) increasing pressure and decreasing temperature. 
D) increasing pressure and increasing temperature.

Question 10

What is the porosity of newly deposited mud?

Accepted Answer

A) less than 5% 
B) between 5% and 20% 
C) between 20% and 50% 
D) greater than 50% 
A) less than 5% 
B) between 5% and 20% 
C) between 20% and 50% 
D) greater than 50%

Question 11

Which of the following sedimentary rocks is composed of biochemically precipitated silica?

Accepted Answer

A) chert 
B) evaporite 
C) limestone 
D) quartz arenite 
A) chert 
B) evaporite 
C) limestone 
D) quartz arenite

Question 12

A clastic sedimentary rock contains pieces of coarse-grained quartz.What rock is most likely in the source?

Accepted Answer

A) rhyolite 
B) andesite 
C) granite 
D) gabbro 
A) rhyolite 
B) andesite 
C) granite 
D) gabbro

Question 13

In which of the following sedimentary environments would gravel most likely be deposited?

Accepted Answer

A) alluvial 
B) continental shelf 
C) deep-sea 
D) deltaic 
A) alluvial 
B) continental shelf 
C) deep-sea 
D) deltaic

Question 14

Which of the following minerals is least likely to occur in a marine evaporite environment?

Accepted Answer

A) borates 
B) gypsum 
C) halite 
D) quartz 
A) borates 
B) gypsum 
C) halite 
D) quartz

Question 15

Which sedimentary rock is makes up flint?

Accepted Answer

A) sandstone 
B) limestone 
C) gypsum 
D) chert 
A) sandstone 
B) limestone 
C) gypsum 
D) chert

Question 16

In which of the following environments would gravel least likely be deposited?

Accepted Answer

A) alluvial 
B) beach 
C) deep-sea 
D) glacial 
A) alluvial 
B) beach 
C) deep-sea 
D) glacial

Question 17

Which of the following types of sandstones is most likely to form by the rapid mechanical weathering of a granite?

Accepted Answer

A) arkose 
B) graywacke 
C) quartz arenite 
D) shale 
A) arkose 
B) graywacke 
C) quartz arenite 
D) shale

Question 18

Which of the following minerals precipitates directly from water in evaporite deposits?

Accepted Answer

A) dolomite 
B) feldspar 
C) gypsum 
D) quartz 
A) dolomite 
B) feldspar 
C) gypsum 
D) quartz

Question 19

Which of the following sedimentary rocks would be classified as biochemical?

Accepted Answer

A) shale 
B) siltstone 
C) sandstone 
D) coal 
A) shale 
B) siltstone 
C) sandstone 
D) coal

Question 20

How fast are moderate-strength river currents that carry and deposit sand?

Accepted Answer

A) 2 to 5 cm/s 
B) 5 to 20 cm/s 
C) 20 to 50 cm/s 
D) 50 to 200 cm/s 
A) 2 to 5 cm/s 
B) 5 to 20 cm/s 
C) 20 to 50 cm/s 
D) 50 to 200 cm/s

Exam 5: Sedimentation: Rocks Formed by Surface Processes

Which of the following types of sedimentary basins is most likely to develop where two plates pull apart?

Which of the following kinds of sandstone is the most poorly sorted?

Which of the following sedimentary environments is dominated by river currents and waves?

Which of the following is an example of a clastic sedimentary rock?

Which of the following is not a sedimentary structure?

What sort of sedimentary environments are floodplains?

Two common types of cements in sedimentary rocks are

Which of the following sediment sequences shows increasing grain size (left to right)?

Burial of sediments results in

What is the porosity of newly deposited mud?

Which of the following sedimentary rocks is composed of biochemically precipitated silica?

A clastic sedimentary rock contains pieces of coarse-grained quartz.What rock is most likely in the source?

In which of the following sedimentary environments would gravel most likely be deposited?

Which of the following minerals is least likely to occur in a marine evaporite environment?

Which sedimentary rock is makes up flint?

In which of the following environments would gravel least likely be deposited?

Which of the following types of sandstones is most likely to form by the rapid mechanical weathering of a granite?

Which of the following minerals precipitates directly from water in evaporite deposits?

Which of the following sedimentary rocks would be classified as biochemical?

How fast are moderate-strength river currents that carry and deposit sand?

The Earth System

Plate Tectonics: The Unifying Theory

Earth Materials: Minerals and Rocks

Igneous Rocks: Solids From Melts

Metamorphism: Alteration of Rocks by Temperature and Pressure

Deformation: Modification of Rocks by Folding and Fracturing

Clocks in Rocks: Timing the Geologic Period

Early History of the Terrestrial Planets

History of the Continents

Geobiology: Life Interacts With Earth

Volcanoes

Earthquakes

Exploring Earths Interior

The Climate System

Weathering,erosion,and Mass Wasting: Interactions Between the Climate and Plate Tectonic Systems

The Hydrologic Cycle and Groundwater

Stream Transport: From Mountains to Oceans

Winds and Deserts

Coastlines and Ocean Basins

Glaciers: the Work of Ice

Landscapes: Tectonic and Climate Interaction

The Human Impact of Earths Environment

Filters