Geology Exam Part 2

You have received a map from a client. You determine a 150-foot property line measures 3 inches on the map. You need a final scale at 1 inch = 20 feet (1:240). What percentage of enlargement or reduction is needed?

• 250% enlargement

• 250% reuction

• 500% enlargement

• 500% reduction

A remote sensing procedure that would be best suited for detecting temperature variations in buried karst terrain is:

• side looking airborne radar

• near-infrared photography

• false color infrared imagery

• long-wave infrared scanning imagery

The following measured section was made in a semiarid region where Tertiary volcanism

has been extensive. The section is described from top (Unit 4) to bottom (Unit 1). What

can be concluded about the origin of the soil horizon (Unit 4)?

Unit 4: 1 ft Soil, red-brown, sandy, abundant quartz grains and red microcline,

some quartz silt and montmorillonite (smectite).

Unit 3: 20 ft Basalt, upper 2 ft weathered irregular and altering to clay with

abundant vertical fissures filled with clay and residual soil. Rock is easily broken with a

hammer, but becomes hard below 2 ft. About 3 ft below top and extending downward

for 5 ft is a zone containing vesicles which at top are oriented nearly horizontal but at the

base are essentially vertical. A representative sample taken from the unit indicates the

following: Texture: aphanitic to porphyritic, uniform throughout. Mineralogy: 20%

labradorite, lath-like crystals about 2 mm long; 10% hornblende, thin crystals about

3 mm long; 70% matrix, finely crystalline, not glassy.

Unit 2: 5 ft Clay, silty, red, swells noticeably when wet, grades downward into

rubble composed of fragments of weathered, dark gray granite.

Unit 1: 15 ft Rock, dark gray, generally aphanitic texture, with very finely crystalline

ground mass containing few crystals identified as microcline, biotite, and albite.

The soil horizon (Unit 4), was derived from weathering:

• of Unit 3, in a humid climate

• of Unit 3, in a semiarid climate

• and transported from another source

• of another basalt flow

Tags

NGSS.MS-ESS2-2

A small oil field is located on the crest of a large anticline. A regional reverse fault is mapped along the flank of the anticline. At shallow depths in five out of the twenty wells, faults intersected by the bore holes caused 100 to 200 feet of missing section. A reasonable structure is:

• normal faulting in a tensional setting

• reverse faulting in a compressional setting

• compressional faulting and folding followed by shallow normal faulting

• compressional faulting and folding followed by shallow reverse faulting

Tags

NGSS.HS-ESS2-1

You are the geologist in responsible charge of designing a foundation exploration drilling program to be carried out in an area underlain by unconsolidated sediments containing large, granitic boulders. The site is known to be uncontaminated. Of the following, which would most likely be the fastest and most efficient drilling method?

• solid-stem auger drilling

• mud-rotary drilling

• direct-push drilling

• cable-tool drilling

Porosity and permeability are important in petroleum reservoir development. Choose the correct statement for a well sorted sandstone reservoir.

• porosity is always permeable

• smaller grain size usually means greater porosity and greater permeability

• greater grain size usually means greater porosity and permeability

• permeability is always present with porosity

What is difference in orientation between a transverse and a longitudinal cross section of a structure such as embankment?

• A transverse section is perpendicular to the longest dimension of the structure and a longitudinal section is parallel to longest dimension of a structure.

• A transverse section is parallel to the longest dimension of the structure and a longitudinal section is perpendicular to dimension of a structure.

• A transverse section cuts the major features of the structure at an acute angle and and a longitudinal section parallels the major features of the structure.

• A transverse section is parallel to the longest dimension of the structure and a longitudinal section is parallel to the shortest dimension of a structure.

You have retained to identify the extent of groundwater contamination resulting from a truck rollover accident with a release of 1,000 gallons of trichloroethylene (TCE) two days ago. A large municipal well field, located about 1.5 miles from the accident site, produces groundwater from a carbonate aquifer. Regional stratigraphy, based on published sources and the well field stratigraphic logs, is characterized by: 0-29 ft below ground surface (bgs), unconsolidated sand and silty sand; 20-35 ft bgs, hard, blue-green clay; 35-100 ft bgs, weathered, fractured limestone. Water levels in the superficial aquifer are are reported to be about 12 ft bgs. Monitoring wells installed at the accient site should be screened from:

• 75-100 ft bgs

• 5-15 ft bgs

• 10-20 ft bgs

• 15-40 ft bgs

Tags

NGSS.HS-ESS2-5

In exploring a site for evidence of past superficial fault rupture, which of the following fault types is LEAST likely to be found in a 10-foot deep backhoe trench dug across a projected fault trace?

• steeply dipping normal fault

• shallowly dipping thrust fault

• shallowly dipping blind thrust

• steeply dipping reverse fault

Tags

NGSS.HS-ESS2-1

Which of the following is NOT part of a RCRA subtitle D landfill closure and post-closure?

• groundwater monitoring

• installation and maintenance of a low permeability landfill cap

• Construction a contoured crest with slopes less than 5%

• limiting or controlling access

Tags

NGSS.HS-ETS1-3