weathering

Presented By: Nirmal Roshan.R & M.R.Balaraman

Upload: nirmal-roshan

Post on 15-Aug-2015

24 views

Category:

Science

1 download

Report

Download

Embed Size (px):

TRANSCRIPT

Presented By:

Nirmal Roshan.R&

M.R.Balaraman

Introduction Definition Weathering

Types of weathering Mechanical weathering Agents of Mechanical weathering

Frost Action Pressure Release (Exfoliation) Insulation Some minor Agents of Mechanical weathering

“Weathering is the process of disintegration and decomposition of rocks of the earth’s

surface”.

Weathering

Mechanical weathering Disintegration by physical agents Composition of rock does not change

Frost Action Weathering process by ice Water increases in volume by about 9% when it

freezes Produces about 1890 metric tons pressure for

every 1 ft2

Common in high altitude zones

Pressure Release (Exfoliation) Metamorphic and intrusive igneous rocks are

under pressure Upper layer is removed by erosion Due to pressure release the cracks are formed

Insolation Common in arid and desert regions Temperature is high in day time and low in

night Disintegration due to expansion and

contraction Block Disintegration Granular disintegration

Rainfall Gravity Salt wedging

Color, Trace Fossils, Weathering, and Soils Causes of Color Common Trace Fossils Weathering Processes - Physical Weathering - Chemical Weathering Weathering

Phisical weathering and chemical weathering

Weathering- Skeleton- Student · 1. Mechanical weathering is more rapid than chemical weathering in cold climates. 2. Chemical weathering is more rapid than mechanical weathering

Weathering Earth Science – Ms. Bray. Weathering and Soil Formation Objectives Define mechanical and chemical weathering. Discuss agents of weathering

23-1 weathering and erosion.notebook...Soil is the result of weathering The two major forms Of weathering are mechanical weathering and chemical weathering. Rocks can be weathered

Weathering Physical and Chemical Weathering. “Weathering” Vocabulary chemical weathering physical weathering ice wedging abrasion oxidation carbonation

Weathering, erosion, and susceptibility to weathering

Chapter 12 Weathering and erosion. Weathering Process Weathering changes the physical form of chemical composition of exposed rock. Mechanical weathering

Weathering, Erosion and Transport - MSU Billings · Weathering, Erosion, ... weathering –The disintegration or disaggregation of rocks by ... weathering –Decomposition is most

TOPIC 4: WEATHERING, EROSION AND DEPOSITION Weathering

Weathering geosci.unc/faculty/glazner/Images/Weathering/TafoniParos.jpg

Weathering Processes. Objectives Explain major processes of mechanical weathering Describe reactions involved in chemical weathering and nature of weathering

Review of Weathering & Chemical Weathering Erosion

WEATHERING*1 - WordPress.com · WEATHERING*1! Weathering*Categories:* Weathering* Types:* Mechanical* Chemical* Biological* Description:*Fragmentationofsoildrocksinto! smaller!fragments!

ChemicalWeathering Chemical Weathering. Chemical Weathering Chemical weathering - process by which the…

Sedimentary Rocks Weathering Mechanical Weathering Types of

Weathering Characteristics of Wood Plastic … 2016), weathering.

Types of Weathering ____________ Weathering only changes the shape. __________ Weathering changes the composition

Weathering and soil formation - National Institute of ... and soil.pdf · Weathering and soil formation. Weathering

Clastic Sedimentary Rocks. Sedimentary Processes Weathering Weathering Physical/Mechanical Weathering Physical/Mechanical Weathering Breaking of rock

Chapter 8-I: Weathering - FergusonScience · Chapter 8-I: Weathering ... Mechanical Weathering (disintegration) ... Chemical Weathering (decomposition) takes place when the rock's

Weathering, Soil, and 5.1 Weathering Mass Movements · Weathering, Soil, and Mass Movements I. Mechanical Weathering 5.1 Weathering Mechanical weathering occurs when physical forces

Lecture 9 Weathering and Soil §Weathering §Processes of mechanical weathering §Processes of chemical weathering §Resistance to weathering §Soil profiles

tion · Weathering • Weathering results in breaking down rock • Two Types of Weathering: 1. Mechanical Weathering 2. Chemical Weathering . Mechanical Weathering • Ice The alternate

weathering mechanical weathering chemical weathering oxidation Weathering

Erosion &Weathering By:Andrew & Matthew. Weathering The two types of weathering are chemical and mechanical weathering. chemicalmechanical

Weathering & Soils - Kean University | World Class Educationkean.edu/~csmart/Observing/11. Weathering and soils.pdf · Weathering & Soils Introduction Physical Weathering Chemical

Key Terms: weathering, mechanical weathering, chemical weathering, sediment, erosion, deposition, compaction, cementation

Weathering and Erosion Notes€¦ · Weathering Overview • Mechanical weathering breaks apart rocks so chemical weathering can change their composition. • Mechanical weathering

WEATHERING Weathering is the gradual destruction of rock under surface conditions. Weathering may involve physical processes (mechanical weathering)

Chapter 11: Weathering and Soil - Wikispaces · 2012-08-16 · SECTION 1 Weathering 327 Chemical Weathering The second type of weathering,chemical weathering,occurs when chemical

Remember: Weathering is… the breaking down of rocks There are two types of weathering: mechanical weathering & chemical weathering. Weathering happens

Relative susceptibility To weathering. Products of Weathering

Weathering Physical/ Mechanical Weathering

Weathering LO To learn about are three types of weathering; Physical weathering Biological weathering Chemical weathering Starter Write down what