Sediments and Sedimentary Rocks Introduction
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Questions and Answers

What is the main detrital rock name for particles larger than 256 mm?

Boulder

What type of sandstone consists of over 90% quartz grains?

Quartz sandstone

Which rock type contains mainly Montmorillonite?

Bentonite

What is the main difference between shale and mudstone in terms of texture?

<p>Shale is finely layered and fissile, while mudstone is massive and blocky.</p> Signup and view all the answers

What is the main defining feature of marl?

<p>Marl contains 35-65% carbonate and complementary clay content.</p> Signup and view all the answers

How are dolomites formed?

<p>Dolomites are formed by inorganic processes where magnesium partially replaces calcium in limestones.</p> Signup and view all the answers

What are sediments?

<p>Products of weathering and erosion, transported and then deposited by wind, water, or ice.</p> Signup and view all the answers

When do sediments become sedimentary rocks?

<p>When they become consolidated into a cohesive mass.</p> Signup and view all the answers

What are clastic sediments composed of?

<p>Fragments of weathered rocks that have been transported some distance from their place of origin.</p> Signup and view all the answers

How are clastic sedimentary rocks named?

<p>Based on fragment sizes.</p> Signup and view all the answers

What are some characteristic features of sedimentary rocks?

<p>Present in beds or layers, contain fossils, presence of pores.</p> Signup and view all the answers

How are sediments classified?

<p>Based on the way they are formed and on composition or particle size.</p> Signup and view all the answers

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