Geos exam 2

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How much accumulation over the years is necessary to produce glacial ice flow?

40-50 meters is the minimum amount

The sierra Nevada is 50-80 miles wide and_____ miles long?

400

What is the volume of water when it expands?

9% volume Frost wedging

Several Mesozoic rocks exist in the Grand Canyon?

False

Name feature at arrow 8

Fault

Exfoliation occurs almost exclusively in?

Granite

Most of the rocks of the sierra Nevada are best termed?

Granite

Most of the rocks in the Rocky Mountains are?

Granite and Gneisses

Rock resistance at arrow 1 (cliff former)

High

Early 19th century fur trappers referred to high mountain valley as?

Holes

Name feature at arrow 4 (5th rock layer)

Supai

Exfoliation

is a form of mechanical weathering in which curved plates of rock are stripped from rock below.

Rock type at arrow 6 (crumbles easily)

shale

How many acres is Yellowstone NP?

2.2 million acres

The 1st of Yellowstones major eruptions began about?

2.2 million years ago

The gneisses of Grand Teton are as old as

2.8 billion years

Yellowstone has experienced ____ major eruptions?

3

Displacement along the Teton fault zone exceeds?

30,000 feet

Date Yellowstone NP was discovered?

March 1st, 1872

Obsidian Cliffs is actually composed of

Volcanic Glass

The last of Yellowstones major eruptions occurred about?

0.6 million years ago before present

The dike that intruded Mt. Moran occurred about?

1.4 billion years ago

The response is determined by:

1.Type of Rock 2.Type of environment

The official height of Grand Teton above sea level is?

13,700 feet

How many mountain ranges once stood over the Grand Canyon?

2

How many resurgent domes occupy the Yellowstone caldera?

2

How many cubic kilometers of material was erupted from yellowstones largest eruption?

2,500 cubic kilometers

The west Thumb of Yellowstone is actually a?

Baby caldera

Name feature at arrow 6 (8th rock layer)

Bright angle

Rock type at arrow 2 ( 3rd rock layer)

Coconino

Bakedzone

Contact metamorphism- due to the share heat of lava

3 Major Eruptions

ERUPTION AGE VOLUME Lava Creek Tuff .6 million 1000km Masa Falls Tuff 1.2 million 280 km Huckleberry Ridge Tuff 2.2 million 2500 km

The major eruptions of Yellowstone could be best described as?

Explosive/Rhyolite

The first scientist to explore the Grand Canyon?

John W Powell

Most important geological feature on the surface of the earth?

Joints

Name the feature at arrow 1 (1st layer)

Kaibab

Glaciers

Large masses of ice that originate on land, and show evidence of past or present motion.

Rock type at arrow 5 (Fizzes in acid)

Limestone

The highest peak in Rocky Mountain NP is?

Longs Peak

Which of the following properties of Yellowstone magma is incorrect?

Low viscosity

The metamorphism of limestone produces?

Marble

What physiographic province is similar to the Colorado Plateau?

None are similar. (cascades, sierra Nevada, basin and range, Northern Rockies)

Name feature at arrow 3

O'Neil butte

The rocksof the Grand Canyon are ___ but the Grand Canyon itself is___?

Old,Young

Age of rock at arrow 9

Precambrian

In the Rocky Mountain National park ____ age rocks are dominate?

Precambrian

Name feature at arrow 5 (6th rock layer)

Redwall

The predominant rock of Yellowstone is?

Rhyolite

Rock type at arrow 2 (large cross beds)

Sandstone

Type of rock at arrow 9

Schist

The oldest rocks of the Grand Canyon are classified as?

Schist's

Weathering

The response of rock to a new unstable enviroment

what was the 1st NP?

Yellowstone NP

Name of rock at arrow 10

Zoroaster

Name feature at arrow 7

Tonto Platform

Most of the rocks of the Rocky Mountain Nation Park are very old, Precambrian

True

Name feature at arrow 11

Unconformities (major)

Name rock at arrow 9

Vishnu

The oldest rocks of the Grand canyon are?

Vishnu

The 3 processes that level the earths surface. (denudation)

Weathering, Mass wasting, Erosion


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