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PRIMARY SEDIMENTARY STRUCTURES A)Stratification Structures & Bedforms 1) Bedding & Lamination 2) Bedforms 3) Cross-lamination 4) Irregular stratification B) Bedding Plane Markings
Laminations < 1cm
Graded Bedding – Which way is up?
Bedforms & Cross-Stratification A) Ripple Marks – modern beach
Ripple Marks in Sandstone – Rock was formed on an ancient beach
2) Sedimentary Structures B) Cross Beds – the inside of Ripple Marks
Checkerboard Mesa – Zion National Park, Utah
Barchan Consistent wind Limited Sand Transverse Consistent wind Abundant Sand Parabolic “Blowouts” Coastal Dunes
Linear (Seif) Converging wind. Limited Sand Star Dunes Variable wind directions.
2) Sedimentary Structures C) Mud Cracks – Environment that periodically dries out
WHAT HAPPENS TO THE PRODUCTS OF ROCK WEATHERING Weathering Transport Deposition.
FOSSILS IN SEDIMENTARY ROCKS Most fossils are preserved in sedimentary rocks –Trilobite in sandstone –Fern in shale –Bivalves shells in limestone.
Lecture 2: Stratigraphic data Boris Natalin. Data from surface outcrops Subsurface data such as well logs, seismic data, and cores Sedimentary rocks:
Copyright © by Holt, Rinehart and Winston. All rights reserved. ResourcesChapter menu Section 3 Sedimentary Rock Chapter 6 Characteristics of Clastic Sediments.
Topics: Erosion by Mass Movements, Wind, and Waves.
Horizontal and continuous beds
Sedimentary Structures Chapter 4. Physical sedimentary structures Physical (inorganic) structures are sedimentary features formed by physical processes.
Sediments stick together Sedimentary rock. What is it? Sedimentary rock is accumulated sediment that has been compacted, or pushed together, or cemented.
Wind Erosion. How the wind transports and erodes material.
Chapter 16 Wind driven erosion. Wind Erosion deflation desert pavement deflation hollow ventifacts Dunes barchan parabolic transverse longitudinal Loess.
Chapter 4 Sedimentary Structures
Chapter 10 Sedimentary Rocks. Sedimentary Rocks Accumulations of various types of sediments Compaction: pressure from overlying sediments squeezes out.
Clastic Sedimentary Rocks. Sedimentary Processes Weathering Weathering Physical/Mechanical Weathering Physical/Mechanical Weathering Breaking of rock.
Today’s Lecture: Sedimentary structures: Inferring depositional processes from sedimentary rocks Sea-level changes & the facies concept Chapter 7: Sedimentary.
Section 3: Sedimentary Rock
Sedimentary Rocks The most common rocks on Earth’s surface!
Geology 12 Presents Outline: –Chp 14 Mass Wasting (Landslides) –Chp 15 Running Water –Chp 16 Groundwater –Chp 17 Glaciers and Glaciation –Chp 18 Wind.
Sedimentary Structures Clues to depositional environments.
Rocks Section 3 Section 3: Sedimentary Rock Preview Objectives Formation of Sedimentary Rocks Types of Sedimentary Rock Chemical Sedimentary Rock Organic.
CHAPTER 6-3 SEDIMENTARY ROCKS. What is sediment? Loose fragments of rock, minerals, and organic material that result from natural processes (including.
DESERTS AND WIND ACTION
Unidirectional Sedimentary Structures. OR Strategy: Relate sedimentary characteristics of ancient deposits (grain size, sedimentary structures, geometry)
GE Sedimentary processes and products Lecture 3. Sedimentary structures I – fluid flows Geoff Corner Department of Geology University of Tromsø 2006.
GLG Physical Geology Bob Leighty Sedimentary Rocks & Processes.
Sedimentary Rock Chapter 10.3.
edStruct/HiRes/WedgeBedding.jpg Depositional Sed Structures Most fundamental sed structures are beds and.
J OURNAL #43 Explain the difference between coarse-grained and fine-grained igneous rock. Describe the process of compaction and cementation. (Refer to.
Sedimentary Rocks Made from Sediments!!. AIM: What are the characteristics of sedimentary rocks? Sedimentary rocks are formed from the accumulation and.
Do Now: What are Sedimentary rocks?. Explain the processes of compaction and cementation. Describe how chemical and organic sedimentary rocks form.
Sedimentologi Kamal Roslan Mohamed AEOLIAN ENVIRONMENTS.
Deserts. Less than 10 inches of precipitation per year Is San Diego considered to be in a desert area?
SEDIMENTARY ROCK Section 6.3.
Sedimentary Rocks Sedimentary rocks form when sediments harden into rocks 3 main kinds clastic, chemical and organic Most of Earth’s crust is covered by.
Section 6.3 Sedimentary Rock Please write down the information that is in BLUE.
Cross bedding and other indicators in sedimentary rocks What is so important about understanding how these sedimentary rocks look the way they do?
CHAPTER 6.3 SEDIMENTARY ROCKS. 95% OF EARTHS CRUST IS IGNEOUS ROCK, AND 4-5% IS SEDIMENTARY AND METAMORPHIC ROCK SEDIMENTS – ANY SUBSTANCE THAT SETTLES.
Deserts & Aeolian Processes
Sedimentary Rocks Uluru, Australia. Grand Canyon, Arizona.
Sedimentary Rocks I. Formation of Sedimentary Rocks
Geology Sedimentary Structures
Sedimentary Rock Notes. Weathering Weathering is a process that breaks down preexisting rocks into sediment. – Caused by Wind Water Ice Sunlight Gravity.
CHAPTER 8: SEDIMENTARY ROCK. Sedimentary rock is formed from the weathered and eroded remains of other rocks Many of the rock layers in this photograph.
Landscapes Shaped by Wind
There are 3 types of rocks found on Earth: Igneous Sedimentary Metamorphic.
How is this different from the other 2?? Ever played with sand?? Sedimentary Rock.
Sedimentary rocks. A. Formation: COMPACTION & CEMENTATION 1. Sedimentary rocks form from the COMPACTION & CEMENTATION of rock fragments/sediments 2. Lithification:
Earth Science With Mr. Thomas. Formation: Through compacting and cementing of layers of sediment. Clastic Rocks: Formed from fragments of other rock.
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