California Geologic Regions and Hazards

PresentationDAY 2

Today we will learn about 7 provinces that make up the north and south part of the state.

We will start in the south

Let’s begin . . .

and finish in the north.

Name of Province:

Transverse Range

TransverseRange

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•Put color inlegend

•Write provincename in legend

Transverse Ranges

The Transverse Ranges are a steep east-west trending series of mountain ranges.

Description of Province:

N

S

EW

Transverse Ranges

Intense folding of the petroleum rich sedimentary

rock makes this an important oil producing area.

Transverse Ranges

The Transverse Ranges extend to the Pacific Ocean.

Transverse Ranges

The Transverse Ranges also include the island group of San Miguel, Santa Rosa, and Santa Cruz islands.

What geologic hazards would you expect to find in this province?

Hazards:•Earthquakes•Landslides•Floods

Along the Coast:

•Coastal Erosion

•Tsunamis

Specific Event:Earthquake

Santa Barbara 1925, JuneMagnitude 6.3

13 dead; $8 million in property damage

Specific Event:Landslide at La Conchita January 10, 2005 Destroyed or seriously damaged 36 houses and killed 10 people.

TransverseRanges

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Name of Province:

Peninsular Ranges

PeninsularRanges

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•Put color inlegend

•Write provincename in legend

Peninsular Ranges

The Peninsular Ranges are a series of northwest trending ranges that are parallel to the San Andreas Fault Zone.

Description of Province:

Peninsular RangesLike the Sierra Nevada, the

Peninsular Ranges are composed of granite (once magma) intruded into older metamorphic rocks.

Peninsular Ranges

Peninsular Ranges

Los Angeles is located

in the Peninsular Ranges.

Peninsular Ranges

The Peninsular Range also includes theisland group of Santa Catalina, Santa Barbara,

San Clemente and San Nicolas islands.

What geologic hazards would you expect to find in this province?

Hazards:•Floods•Landslides•EarthquakesAlong the Coast:•Coastal Erosion•Tsunamis

Specific Event

Northridge Earthquake 01/17/1994 Magnitude 6.757-Dead 1500-Seriously Injured $15 Billion in Damage

Specific Event:

Floods in Southern California 1995

11 Dead; $1.34 Billion in Damages

PeninsularRanges

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