Journey into the Past

Which type of sediment is the most common?

What does lithogenous sediment come from?

What can the composition of lithogenous sediments tell us?

How long does the process of lithogenous sediment formation take?

Which of the following is a principle origin of sediment according to the text?

What is the process called when sediments are compacted and cemented together to form a rock?

What is the purpose of the sediment cores collected by the Jody's Resolute ship?

What important discovery was made by the Deepsea Drilling Project?

Which agent of erosion is responsible for most of the work in depositing sediment in the great valley of California?

What is the unique characteristic of sediment carried by glaciers?

Where are the greatest quantity of epigenetic sediments concentrated?

How does sediment drop out of the water when it enters the ocean?

Which field of study focuses on understanding changes in ocean chemistry, circulation, biology, and climate over a long period of time?

What does the law of superposition state?

What does a high energy environment imply about the particle size in sediment?

What does poorly sorted sediment indicate about the energy of the environment?

Which of the following can be determined by analyzing marine sediments?

What can the isotope ratio of oxygen in marine sediments tell us?

What is the significance of the layer of sediment high in iridium found in the oceans?

Why is the texture of marine sediments important in identifying characteristics?

Which term describes shallow water deposits?

What type of sediment is typically found in glacial deposits?

What can the presence of turbidite deposits indicate?

Which type of sediments reflect the composition of the rock from which they were derived?

What is the main factor that determines the grain size of sediment?

What is the scale used to classify grain size in sediment?

Which mineral makes up the majority of sand found in the Earth's crust?

What is the main reason why sand is enriched with quartz compared to the source material?

Why do sand grains in the picture appear angular and not rounded?

Which of the following is a type of lithogenous sediment mentioned in the text?

What is the main reason why marine organisms in lacustrine environments use silica to build their shells instead of calcium carbonate?

Which type of sediment is typically found in the abyssal plains?

Which two types of biogenic ooze are mentioned in the text?

What is the chemical formula for calcium carbonate?

What is the purpose of diatomaceous earth in a pool filter?

Which organisms get their energy by consuming other organisms?

What is the main difference between photosynthetic diatoms and radiolaryns?

What is the term used to refer to the shells of diatoms and radiolaryns?

What is the minimum percentage of silica required for a sediment to be classified as a siliceous ooze?

What is the main commercial use of diatomaceous earth?