principles of historical geology iii historical geology – principles iii

Principles of Historical Geology III

Historical Geology – Principles III

Other Principles of Historical Geology

Historical Geology – Principles III

William "Strata" Smith

Late 1700'sobsessed Englishcanal engineer

Bio@www.ucmp.berkeley.edu

Other Principles of Historical Geology

Historical Geology – Principles III

Principle of Fossil Succession:

1. Fossils occur in an orderly

and predictable fashion in

a vertical succession of rocks.

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Other Principles of Historical Geology

Historical Geology – Principles III

Principle of Fossil Succession:

1. Fossils occur in an orderly

and predictable fashion in

a vertical succession of rocks.

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No theory … just what you see!!!

Other Principles of Historical Geology

Historical Geology – Principles III

Principle of Fossil Succession:

2. Each stratigraphic level has

an unique assemblage

of fossils.

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Other Principles of Historical Geology

Historical Geology – Principles III

Principle of Fossil Succession:

2. Each stratigraphic level has

an unique assemblage

of fossils.

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BBBB

CCCC

DDDD

Other Principles of Historical Geology

Historical Geology – Principles III

Principle of Fossil Succession:

2. Each stratigraphic level has

an unique assemblage

of fossils.

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(1)

(2)

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(5)

(6)

AB Zone

Other Principles of Historical Geology

Historical Geology – Principles III

Principle of Fossil Succession:

3. Therefore, the same fossil assemblage

found in layers of rock from two locations are:

Other Principles of Historical Geology

Historical Geology – Principles III

Principle of Fossil Succession:

3. Therefore, the same fossil assemblage

found in layers of rock from two locations are: same position in sequence

Other Principles of Historical Geology

Historical Geology – Principles III

Fossil collecting at one localityyields many specimens of:

C and D but no others. What is your position?

Other Principles of Historical Geology

Historical Geology – Principles III

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(1)

(2)

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Fossil collecting at one localityyields many specimens of:

C and D but no others. What is your position?

Zone 5

Other Principles of Historical Geology

Historical Geology – Principles III

Principle of Fossil Succession:

3. Therefore, the same fossil assemblage

found in layers of rock from two locations are: same position in sequence

same position in Earth’s History

Other Principles of Historical Geology

Historical Geology – Principles III

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“Home”“new &

unknown”

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Other Principles of Historical Geology

Historical Geology – Principles III

AAA

BBBB

CCCC

DDDD

(1)

(2)

(3)

(4)

(5)

(6)FFF

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DDDD

“Home”“new &

unknown”

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Other Principles of Historical Geology

Historical Geology – Principles III

Principle of Fossil Succession: allows for

Correlation: establishing lateral

equivalence of rock layers that were

once continuous.

The map that changed the world:

Historical Geology – Principles III

http

://w

ww

.unh

.edu

/esc

i/gre

atm

ap.h

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link to map

W. Smith

The map that changed the world:

Historical Geology – Principles III

http

://w

ww

.unh

.edu

/esc

i/gre

atm

ap.h

tml

link to map

W. Smith

The first geologic map

Historical Geology – Principles III

Review

Historical Geology – Principles III

Superposition Original Horizontality Original Lateral Continuity Inclusion of Components Cross Cutting Relationships Uniformitarianism Fossil Succession Biological Evolution Plate Tectonics