Association of State Boards of Geology ASBOG 1 Practice Exam

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• In seismic refraction surveys, the layering is inferred from differences in what property?
• Invert struts are used to support tunnels in which ground condition?
• Which of the following is a valid use of ground-penetrating radar?
• Bentonite forms from alteration of which material?
• Removal of lateral support can lead to which?
• Trilobites are indicative of which geological time interval?
• A fissure vein of gold in quartz would most likely be associated with which of the following?
• Dacite would most likely contain which mineral assemblage?
• GP stands for General Purpose
• Saprolite is defined as
• Which seismic method uses reflections to identify rock boundaries?
• The term krotovina describes a structure formed by which process?
• What is the term for the pile of rocks that accumulates at the base of a cliff, chute, or slope?
• Settlement data obtained from which laboratory test?
• Cable tools are used to drill holes for which purposes?
• In well completion design, a gravel pack is used to control movement of fines when there are fine-grained sediments.
• The direct shear test is used to measure which property?
• In rock mechanics, rock bolts primarily function to
• In stratigraphic section described with crossbedded sandstone, ripple-marked sandstone, claystone and siltstone interbedded with thin sand lenses, the probable depositional environment is
• What is the primary purpose of point load tests in rock mechanics?
• Which of the following is a test used to establish aggregate stability?
• To determine fault slip most accurately you could use which method?
• An isopach map is used to contour which of the following?
• Which test is used to evaluate settlement behavior?
• In a fluvial environment, deposition of bed load is primarily controlled by:
• Which geomorphic feature is defined as a broad, gently sloping expanse of rock debris extending outward from the foot of a mountain slope, especially in a desert?
• What is the correct oldest-to-youngest sequence for a transgressive deposit sequence?
• Which instrument is used to measure angles of slope, tilt, or elevation relative to gravity?
• What is the coarse-grained intrusive equivalent of a fine-grained extrusive rock that has a plagioclase-dominated matrix with phenocrysts of calcium-rich plagioclase and pyroxene?
• Which of the following is a property typically measured by gravity surveying?
• Which transducer is used to measure force and produce a signal proportional to the force?
• Which phrase best describes the melange found at convergent plate margins?
• Rock bolting serves what function?
• Horizontal drains are appropriate for
• Mercury deposit origins include which processes?
• Convergent plate margins are characterized by melanges of which rocks?
• Seismic refraction methods rely on which property difference?
• Which property is most commonly used to describe the stiffness of a material under axial loading and has the symbol E?
• Which sampler is used to obtain an undisturbed sample of very stiff clay?
• What type of tunnel support would be best for squeezing ground conditions?
• A tunnel-like structure created by a burrowing animal and filled with soil material from another horizon is called?
• Neutron logs are used to determine
• At a convergent tectonic boundary, what type of economic deposits would you expect to find?
• In a distance-drawdown aquifer test, the observation well should...
• Cassiterite tin source?
• An alkali feldspar-rich volcanic rock with minor dark minerals such as biotite, amphibole, or pyroxene is called what?
• Tunnel boring machines are used under which conditions?
• Which of the following are advantages of air drilling?
• Which statement best identifies the blueschist facies in terms of mineral assemblage that includes quartz, jadeite, lawsonite, phengite, glaucophane, and chlorite?
• Which factor contributes to reduced shear strength in a potentially unstable slope?
• Saprolite is most characteristic in which climate region?
• Bentonite forms from alteration of which material?
• Which statement defines Poisson's ratio?
• Ground-penetrating radar is used during waste-disposal site investigations to...
• In thrust fault systems, a fenster reveals which of the following?
• Plagioclase, quartz, biotite, and hornblende would most likely be found in which rock type?
• In a downhole SP and resistivity log, which pattern best indicates a confined freshwater aquifer?
• What type of geophysical exploration would you use to delineate an ore body containing hematite and chalcopyrite?
• Ground-penetrating radar is commonly used in environmental site investigations to?
• Zeolites form during which geologic process?
• Consolidation test evaluates which soil property?
• Which mineral among the following is NOT one of the three main physical properties of rocks logged by wirelines?
• Air drilling is commonly used because of what advantages?
• Seif dunes are wind-blown deposits that extend parallel to what?
• In natural gas production, what is the purpose of injecting sand into fractures?
• Which SP and resistivity signature best indicates a confined freshwater aquifer in a well log interpretation?
• A stratigraphic sequence composed bottom to top of limestone, gypsum, and halite indicates which environment?
• Titaniferous magnetite deposits are commonly associated with which rock types?
• Eclogite formation is most closely associated with which tectonic setting?
• What is the shear modulus defined as?
• Which isotopes are commonly used to age date groundwater in hydrogeology?
• What specific yield would be expected in a SC aquifer?
• What is a main restriction on air drilling?
• If a bed dips 5 degrees in the opposite direction to the regional dip, the map-measured thickness is likely to be:
• Which process forms kettle lakes in previously glaciated terrain?
• What term describes groundwater movement through pores at different rates and varying path lengths?
• Regolith encompasses which part of the Earth's surface?
• Which intrusive igneous rock is composed principally of plagioclase feldspar with possible biotite, hornblende, and/or pyroxene and lies between gabbro and granite in composition?
• Quartz, jadeite, lawsonite, phengite, glaucophane, and chlorite characterize which metamorphic facies?
• Which property does gravity geophysical technique measure?
• What is a gabion?
• In seismic refraction profiles, what signal is most important?
• Which geomorphologic feature forms when stranded blocks of glacial ice melt on outwash plains, creating depressions that fill with water?
• What is Rock-quality designation (RQD)?
• Magnetic surveys are particularly useful for delineating ore bodies containing which minerals?
• A lithostratigraphic unit is defined by which characteristic?
• Which term describes the water content held in soil after drainage has ceased and downward movement slows?
• When a bed dips shallowly in the opposite direction of the regional dip, the apparent thickness on a cross-section is:
• The volcanic equivalent of granodiorite is which rock?
• In ore deposits, the non-valuable material surrounding ore is called what?
• Which instrument is used to measure fluid transmission properties of the vadose zone?
• Thin-walled samplers are used for which type of soil samples?
• Which sampling method is used to obtain undisturbed samples from soft sediments?
• Presence of gypsum and halite in a stratigraphic sequence most strongly indicates which environment?
• Andesite commonly contains which minerals?
• Which set of minerals is commonly associated with sanidine in igneous rocks?
• Ground-penetrating radar is useful for determining which?
• Seismic stratigraphy uses wave reflections and refractions to resolve surfaces between rock types.
• What rock makes a poor aggregate for Portland cement?
• Name three main physical properties of rocks logged by wirelines.
• Mercury deposits can originate from which genetic types?
• Which of the following best lists the tests used to establish aggregate stability?
• In a regressive sediment sequence followed by delta development, which order from oldest to youngest is correct?
• Which option best describes the rock known as alkali feldspar-rich rock with minor mafic minerals?
• Granite weathering in a temperate semi-arid climate most commonly yields what sediment?
• What type of soil sampler would you use to obtain an undisturbed sample of very stiff clay?
• What is a paternoster lake?
• Which term describes the broad apron formed by the coalescence of several alluvial fans?
• In carbonate rocks, the mineral assemblage wollastonite, anorthite, and diopside would most likely correspond to which metamorphic facies?
• Titaniferous magnetite deposits are most commonly associated with which rock types?
• Plagioclase plus pyroxene or hornblende could be found in which igneous rock?
• Barchan dunes are characterized by:
• RQD length threshold used in RQD calculation
• Poisson's ratio is defined as?
• Saprolite is formed by in-place chemical weathering of which rock types?
• Gabions are commonly used in which applications?
• A clay whose shear strength is decreased to a fraction of its former value by remolding is called
• Which metamorphic facies is diagnosed by the presence of jadeite and lawsonite with quartz, among other minerals?
• Zeolite minerals are typically associated with which geologic setting?
• What horizontal distance is considered adequate to filter out bacteria from a septic tank?
• Which mineral is NOT commonly listed among the minerals associated with sanidine?
• What is the intrusive rock with a coarse grain that shares mineral composition with basaltic extrusive rocks?
• The surface exposure of weathered sulfide deposits that has a distinctive color of the soil at the surface is called
• Which metamorphic facies is most characteristic for an assemblage consisting of albite, chlorite, actinolite, and calcite?
• Which seismic waves move particle motion perpendicular to the direction of travel?
• In magnetics geophysics, which geological target could be investigated?
• A braided stream typically indicates which condition of sediment transport?
• What does a slug test measure?
• Greisen is formed by alteration of which rock type?
• The mineral with the chemical formula K(AlSi3O8) corresponds to which potassium feldspar species?
• Seismic reflection and refraction methods measure which properties of geological materials?
• RQD is expressed as a percentage of drill core segments of at least how long?
• Which device is used to measure infiltration rates in the vadose zone?
• In a cross-section where geologic units are parallel and not overturned, which principle allows you to infer that the rocks at the bottom are older than those above?
• Caves found within limestone result from which process?
• Which option best describes the soil texture CL as related to aquitards?
• In geophysics, which geological target could be investigated using magnetic methods?
• A dacite is the volcanic equivalent of which plutonic rock?
• Under what environmental conditions would you expect to find the thickest vadose zone?
• Seismic refraction surveys measure travel times of seismic waves along a velocity contrast. Which statement best describes its main application?
• Weathering of feldspar in temperate environments commonly yields which clay mineral?
• Which process primarily forms caves in limestone?
• A paternoster lake is best described as what?
• Which feature is formed by the coalescing of several alluvial fans into a broader depositional apron?
• Which rock is listed as a poor aggregate for Portland cement?
• Regolith comprises which horizons of the soil profile?
• Soft sediments are best sampled with a ___ to obtain undisturbed samples.
• Which seismic waves are alternatingly compressional and extensional, and cause rocks to change in volume?
• In coastal areas the depth of the fresh water interface below sea level is approximately how many times the height of the potentiometric surface above sea level?
• The assemblage of hornblende and plagioclase would most likely indicate which metamorphic facies?
• In soil texture classification, which texture would be most appropriate for an aquitard due to low permeability?
• SP logs are used to infer which properties of subsurface formations?
• Large smooth elongated windblown deposits extending parallel to prevailing wind are known as?
• What term describes a mass of small loose stones that forms or covers a slope on a mountain?
• What is the type of transformer used for measuring linear displacement (position)?
• Tritium dating and carbon dating are used to age date which medium?
• To properly treat septic tank effluent within a leach field the conditions must be
• Which statement defines the compaction test?
• Which type of water has never circulated in the hydrologic cycle?
• Darcy Flux is defined as what?
• Which geologic law explains the relative ages of rocks with respect to one another in a map or cross section in which all the geologic units are roughly parallel and are not overturned?
• Dispersion in groundwater primarily causes what effect on a contaminant plume?
• Which environment is most likely to preserve trilobite fossils?
• In a temperate semi-arid environment, granite weathering commonly produces which sediment?
• Which tectonic setting is associated with porphyry copper and skarn deposits?
• Which mineral among listed is tin-bearing sulfide?
• Which soil type is best for dam embankment shells?
• Granulite facies are best described as what?
• Potassium-argon dating can be used to date which fields?
• A soil with a porosity of 50% would be classified as which USCS symbol?
• A fossil assemblage that includes brachiopods, pelecypods, and bryozoans indicate which marine zone?
• Potassium-argon dating is used to date which domains?
• Thick-walled samplers are used for
• What describes the amount of soil moisture held after excess water has drained away and the rate of downward movement has decreased?
• Which type of water has been trapped in the pore spaces since the deposition of the rock?
• In a confined aquifer (or aquitard), storativity is defined as the volume of water released from storage per unit surface area of the aquifer or aquitard per unit decline in hydraulic head.
• In thrust fault systems, a fenster is defined as:
• Standard Penetration Test (SPT) description
• What type of soil would be an appropriate roadbed subgrade?
• Greisen is formed by alteration of which rock type and is considered a class of endoskarn?
• The storage coefficient and transmissivity are calculated using which equation?
• In ore deposits, the commercially valueless material in which ore is found is known as what?
• Trilobites are typically found in which deposits?
• SP logs are widely used for logging wells because they provide information on lithology and salinity of interstitial water. What two properties do SP logs primarily indicate?
• The Standard Penetration Test is used to obtain information about which property?
• Which analytical technique is typically used as an initial step to identify the type of fuel contamination?
• Each magnitude releases how much more energy than the previous magnitude?
• Eclogite is associated with which metamorphic conditions?
• Which seismic wave travels through both solids and liquids?
• Which property do neutron logs primarily measure to estimate porosity?
• How does the thickness of the aquifer affect the storage?
• Which transducer is used to create an electrical signal whose magnitude is directly proportional to the force being measured?
• What device is used to measure changes in the length of an object?
• Young's modulus is also known as?
• Storage coefficient or storativity in an unconfined aquifer is equal to which term?