Weathering No atmosphere no weathering Mechanical Weathering Examples

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Weathering No atmosphere, no weathering Mechanical Weathering Examples: exfoliation, frost action, abrasion

Weathering No atmosphere, no weathering Mechanical Weathering Examples: exfoliation, frost action, abrasion

Exfoliation

Exfoliation

Frost Action – water and alternating temps.

Frost Action – water and alternating temps.

Frost Action

Frost Action

Abrasion – smooth corners, decreases size

Abrasion – smooth corners, decreases size

Weathering Chemical Weathering Examples: lichen, limestone, acid rain

Weathering Chemical Weathering Examples: lichen, limestone, acid rain

Lichen: secrete acids, composite organisms consisting of a symbiotic association of a fungus with

Lichen: secrete acids, composite organisms consisting of a symbiotic association of a fungus with a photosynthetic partner, usually either a green algae or cyanobacterium

Lichen

Lichen

Limestone Dry (arid) climate no chemical weathering – notice sharp corners)

Limestone Dry (arid) climate no chemical weathering – notice sharp corners)

Limestone humid climate causes solution weathering – notice rounded features, headstone carvings becoming illegible)

Limestone humid climate causes solution weathering – notice rounded features, headstone carvings becoming illegible)

Limestone (solution weathering)

Limestone (solution weathering)

Acid Rain

Acid Rain

Acid Rain

Acid Rain

Weathering Differential Weathering Helps make rock strata and features really stand out. The Grand

Weathering Differential Weathering Helps make rock strata and features really stand out. The Grand Canyon. Examples: Horizontal bedding, cross bedding, graded bedding

Differential Weathering More resistant forms a cliff or ridge (sticks out). Less resistant erodes

Differential Weathering More resistant forms a cliff or ridge (sticks out). Less resistant erodes back (concave) creates slopes or forms valleys.

Differential Weathering

Differential Weathering

Differential Weathering k) c r ro fte o s t( an st i s

Differential Weathering k) c r ro fte o s t( an st i s e sr s Le re r o M e ) ck o r r nt a t sis de r a (h

Differential Weathering

Differential Weathering

Such pretty cross bedding

Such pretty cross bedding

Graded bedding

Graded bedding

START Definitions Sedimentary Rocks Vocab. • Grab the Orange Book page 61 in the

START Definitions Sedimentary Rocks Vocab. • Grab the Orange Book page 61 in the back of the room

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Weathering Weathering Physical mechanical weathering The process byWeathering Weathering Physical mechanical weathering The process by
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Chapter 4 Mechanical Weathering What is Weathering WeatheringChapter 4 Mechanical Weathering What is Weathering Weathering
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CREST Examples Basic Examples Function Examples Limitation ExamplesCREST Examples Basic Examples Function Examples Limitation Examples
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Crown Examples Basic Examples Function Examples Limitation ExamplesCrown Examples Basic Examples Function Examples Limitation Examples
CREST Examples Basic Examples Function Examples Limitation ExamplesCREST Examples Basic Examples Function Examples Limitation Examples
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Crown Examples Basic Examples Function Examples Limitation ExamplesCrown Examples Basic Examples Function Examples Limitation Examples
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The Atmosphere and Climate Atmosphere Atmosphere The mixtureThe Atmosphere and Climate Atmosphere Atmosphere The mixture
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UNIT 2 ATMOSPHERE ATMOSPHERE COMPOSITION THE ATMOSPHERE INSULATESUNIT 2 ATMOSPHERE ATMOSPHERE COMPOSITION THE ATMOSPHERE INSULATES