What are the 2 ways rocks are Weathered?

Slides:

Advertisements

Similar presentations

Weathering Processes.

Advertisements

Weathering I. Definitions: the process by which rocks and minerals break down at or near the Earth’s surface Weathering: Produces soil, releases the minerals.

Weathering of Rocks. Exam 1 Why we see weathering 1.Most minerals are not stable at the Earth’s surface 2.The Earth wants to be flat – lowest energy.

Sedimentary Materials

Geology 12 Presents Sedimentary Rocks Weathering and Erosion.

Chemical & Mechanical Weathering How is soil formed?

Ch 9. Weathering A. Mechanical Weathering B. Chemical Weathering C. Soil.

Weathering The Breakdown of Rocks.

Where are we??? Earth’s matter & structure Rock forming processes

Weathering. Weathering: the disintegration, or breakdown of rock material.

Weathering vs. Erosion What is weathering? What is erosion?

Ch 5 – Weathering & Erosion

Chemical Weathering Definition: transformation/decomposition of one mineral into another Mineral breakdown carbonate dissolves primary minerals --> secondary.

Chapter 5.1 Weathering.

Chapter Five Weathering: The Breakdown of Rocks. CHAPTER 5: WEATHERING: THE BREAKDOWN OF ROCKS A) WEATHERING: PROCESS BY WHICH ROCKS AND MINERALS BREAK.

Bowen’s Reaction Series

Chemical Weathering. I. Introduction Chemical Weathering I. Introduction II. Process of Decomposition A. Overview: Decomposition alters minerals into.

Rick's Cafe in Jamaica Keith Fairbrother Erosion Door County, WI Lizzy Schneider.

Formation of Sedimentary Rocks

Sedimentary Processes and products Weathering Processes.

Chapter 16: Weathering and Erosion Copyright © 2007 by W. H. Freeman & Company With adaptaions from lectures by Peter Copeland Bill Dupré.

1. 2 Engineering Geology and Seismology Lecture#07 Department of Civil Engineering CECOS University of Engineering and Technology, Peshawar.

A) Mechanical / Physical weathering:

Classroom presentations to accompany Understanding Earth, 3rd edition prepared by Peter Copeland and William Dupré University of Houston Chapter 6 Weathering.

ROCK vs. MINERAL n ROCK n Mixture n Can be separated by physical means n MINERAL n Pure substance n Has specific formula n Cannot be separated by physical.

WEATHERING, EROSION & SOIL FORMATION

Chapters 7 and 8 Slide Lake b1 Weathering – the breakdown of rock at or near the earth’s surface.

Weathering Charity I. Mulig. Weathering is the … physical breakdown (disintegration) and chemical alteration (decomposition) of rocks at or near the Earth’s.

Soil Origin and Development

Natural decomposition of rocks

Weathering Weathering is the physical breakdown and chemical alteration of rocks and minerals. Weathering happens on or near the surface. Weathering is.

Sedimentary Materials Sedimentary rocks cover 80% of the earth’s surface but only comprise ~1% of the volume of the crust (they are generally NOT dense.

Weathering of Rocks. Why we see weathering 1.Most minerals are not stable at the Earth’s surface 2.The Earth wants to be flat – lowest energy state Topography.

Chapters 7 - Erosion & Weathering Lecture notes. Erosion- removal and transport of weathered materials.

Weathering and Erosion Natures way of tearing down everything that has been built up over billions of years.

Weathering, Erosion & Deposition ESS Weathering The breaking up of rock into smaller pieces.

ChemicalWeathering Chemical Weathering. Chemical Weathering Chemical weathering - process by which the internal structure of a mineral is altered by the.

Weathering - the break down of rocks on the Earth’s surface.

Chapter 4 – Weathering Sedimentary rocks are composed of sediment. Sediment forms at or near earth’s surface through the processes of weathering, transportation,

Introduction to Weathering

Chapter 2 Minerals Section 1 & 2 Matter and Minerals Notes 2-1.

Weathering, Erosion, and Deposition

Weathering and Erosion

Weathering Charity I. Mulig.

The Formation of Sediments

Lecture 5: Weathering and Soil Formation

Weathering of Rocks.

Chapter 7 Section 1 Notes.

Weathering - the breakdown of rock and minerals.

Weathering and Erosion

Weathering Cornell Notes.

Chemical Weathering SAPROLITE.

Ch 5 – Weathering & Erosion

Weathering Weathering - processes at or near Earth’s surface that cause rocks and minerals to break down Erosion - process of removing Earth materials.

TOPIC IX: WEATHERING AND EROSION

weathering: breaking down of rock can be mechanical or chemical

Chapter 5.1 Weathering.

Weathering and Erosion

Weathering And Erosion

Ch 5 – Weathering & Erosion

Sedimentary Materials

Chemical & Mechanical Weathering

Chapter Five Weathering: The Breakdown of Rocks

Igneous Rocks Chapter 5.

Weathering And Erosion

Presentation transcript:

What are the 2 ways rocks are Weathered?

What are the characteristics of the 2 Parts of Weathering? Erosion  Transport 

Define the 2 Types of Weathering.

What are the 5 processes of Mechanical Weathering?

What is Frost Action? Frost wedging What happens to water when it freezes?

What are Talus cones & how do they form?

What is Pressure Release? What are Sheet joints? What is Exfoliation? Exfoliation domes? How does Thermal expansion & contraction affect rocks? How does Salt crystal growth affect rocks? How do organisms affect rocks?

What is Chemical Weathering? What are the agents of chemical weathering? What are the 3 Types of Chemical Weathering?

How does “Solution” affect rocks? How does “Oxidation” affect rocks?

_ + Calcite dissolves in acidified water. (in soln) CaCO3 + H2O + CO2 Ca2+ + 2HCO3- When the iron oxidizes, hematite forms by: 4Fe + 3O2 2Fe2O3 water carbon dioxide calcium ion calcite bicarbonate ion iron oxygen hematite _ +

What is Hydrolysis? 2KAlSi3O8 + 2H+ + 9H2O Al2Si2O5(OH)4 + 2K+ + 4SiO2 orthoclase hydrogen ion water clay mineral (kaolinite) potassium ion silica ion

What Factors Affect the Rate of Chemical Weathering? What parts of rocks are the most weathered? least weathered? What Factors Affect the Rate of Chemical Weathering?

Particle Size How does surface area affect chemical & physical weathering? What is spheroidal weathering?

How is chemical weathering related to Bowen’s Reaction Series? Why is the climate a factor in chemical weathering of rocks? Chemical Weathering is: most intense in ____________________. reduced in ________________________. How is chemical weathering related to Bowen’s Reaction Series?

What is the relationship b/w stability of minerals to the order in which they crystallize from a magma? Bowen’s Reaction Series Olivine Ca-Plagioclase Pyroxene Amphibole Biotite Na-Plagioclase K-Feldspar Muscovite Quartz

What is Differential weathering? Arches Natl. Park, Utah Pebble Beach, Calif. What is Differential weathering? Why do rocks weather at different rates? Why can a single rock look weathered & unweathered in places?