6,8,10

Question 0

What mineral particles are the dominant coloring agents in reddish, brownish and yellowish soils

Answer 0

Dust sizes grains of iron oxides

Question 1

Which term describes soil formed by weathering of the underlying bedrock

Answer 1

Residual

Question 2

What portion of an angular, fracture bounded granitic block shows the highest rate of weathering?

Answer 2

The edges and corners

Question 3

Which two factors speed up rates of chemical rxn and weathering in rocks and soils?

Answer 3

Warm temps, very moist

Question 4

Clay minerals formed from gabbro or diorite bedrock illustrate which kind of weathering

Answer 4

Chemical

Question 5

In terrain with steep hill slopes, which crop and cultivation technique will minimize soil erosion

Answer 5

Apples; land between trees is planted in grass and not cultivated

Question 6

Which of the following best describes the dust bowl

Answer 6

Areas of severe wind erosion on the Great Plains, 1930s

Question 7

Under similar warm, moist climatic conditions, why would basalt and gabbro generally have higher chemical weathering rates then rhyolite and granite

Answer 7

The ferromagnesian minerals in the gabbro and basalt are subject to oxidation and chemical breakdown

Question 8

Which term best describes an accumulation of angular rock fragments at the base of a steep, bedrock slope or cliff

Answer 8

Talus slope

Question 9

Which of the following best describes the process eluviation

Answer 9

Removal of very fine sizes silt and clay particles from the A and E horizons

Question 10

In which setting would regional metamorphism be most likely

Answer 10

At great depths in the crust where two continents are colliding

Question 11

Amphibole is a foliated metamorphic rock composed principally of hornblende and plagioclase. How does it form?

Answer 11

By regional metamorphism of volcanic rocks such as andesite and basalt

Question 12

What foliated, metamorphic is texturally intermediate between slate and schist

Answer 12

Phyllite

Question 13

What is the major source of heat for contact metamorphism

Answer 13

Heat from nearby magma body

Question 14

What platy, parallel, mineral grains are the most visual aspect of foliated metamorphic rocks

Answer 14

Micas

Question 15

What term describes the zones of contact metamorphism surrounding an intrusive magma body

Answer 15

Aureole

Question 16

Which of the folllowing forms at the highest grade of regional metamorphism

Answer 16

Schist

Question 17

Which of the following lists the rocks in order of increasing grain size and increasing grade of metamorphism

Answer 17

Slate, Phyllite, schist

Question 18

Which of the following statements concerning slate is not true

Answer 18

Has abundant, coarse grained mica

Question 19

T or f: partial melting is an important process in the formation of migmatites

Answer 19

True

Question 20

___ is typically formed by metamorphism of a sandstone

Answer 20

Quartzite

Question 21

Calcite is the main mineral constituent of the sedimentary rock limestone and the metamorphic rock marble

Answer 21

True

Question 22

A graben is characterized by

Answer 22

Hanging wall block that has moved down between two normal faults

Question 23

A Horst is

Answer 23

An uplifted block bounded by two normal faults

Question 24

The michigan geologic map show older, Paleozoic strata( in roughly circular patterns) surrounding the cores area of Pennsylvania rocks,. What is this structure?

Answer 24

Basin

Question 25

a ____ fault has little or no vertical movements of the two blocks

Answer 25

Strike slip

Question 26

A reverse fault is one which

Answer 26

The hanging wall block has moved up relative to the footwall block along an insulated inclined fault

Question 27

A sync line is __

Answer 27

Fold in which the strata dip toward the axis

Question 28

A ___ is a defined, recognizable, mapable, rock unit with a known age

Answer 28

Formation

Question 29

Brittle deformation would be favored over plastic deformation in which of the following conditions

Answer 29

Cooler temps

Question 30

The mountains and valleys of the basin and range province of the western untied states formed in response to

Answer 30

Tensionsal stress and normal fault movements

Question 31

Which one of the following best describes the geology of the black hills region in South Dakota

Answer 31

An elongate dome cored by Proterozoic igneous and metamorphic rocks

Question 32

Which one of the following is true for anticlines but not synclines

Answer 32

The seeker strata are buckled upward along the fold axis

Question 33

__ are the products of horizontally directed, Tensionsal stresses

Answer 33

Normal faults

Question 34

Along oblique slip faults, not blocks have horizontal and vertical components of movement

Answer 34

True

Question 35

The oldest sedentary rock strata are exposed along the axial parts of deeply eroded anticlines

Answer 35

True

Question 36

The Navajo and Dakota sandstones are

Answer 36

Mesozoic, sedimentary rock formation in Utah, Colorado, and neighboring states

Question 37

Normal faults form in response to horizontal , Tensional stresses that stretch or elongate the rocks

Answer 37

True

Question 38

The great Rift Valley of east Africa is characterized by ___

Answer 38

Mainly normal faulting as east Africa begins to fragment