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a Rivers are the main source of terrigenous sediments. This photo, taken from space, shows sediment entering the Gulf of Mexico from the Mississippi River. Figure 5.7 Sources of terrigenous sediments. tive shells and skeletons. Some of this sediment derives from larger mollusk shells or from stationary colonial animals such as corals, but most of the organisms that produce biogenous sediments drift free in the water as plankton (about which you'll learn in Chapters 14 and 15). After the death of their owners, the hard structures fall to the bottom and accumulate in layers. Biogenous sediments are most abundant where ample nutrients encourage high biological productivity, usually near continental margins and areas of upwelling. Over millions of years, organic molecules within these sediments can form oil and natural gas (see Chapter 17 for details). Note in Table 5.2 that biogenous sediments cover a larger percentage of the area of the ocean floor than terrigenous sediments do, but the terrigenous sediments dominate in total volume. b Dust from the Gobi Desert blows eastward across the Pacific on 18 March 2002. The particles will fall to the ocean surface and descend slowly to the bottom to end up as terrigenous sediments. 'An important effect of this injection of ash into the atmosphere is discussed in Questions from Students #4 on page 161. © The ash cloud caused by the April 2010 eruption of Eyjafjallajökull, a volcano in Iceland. The wind transported ash from the eruption for hundreds of kilometers and greatly disrupted aviation in Europe. Much of the ash ended up in the North Atlantic. NASA/BSFC, ORBIMAGE, SeaWi FS Wisconsin-Madison/MCDIS Science Team/NASA

a Rivers are the main source of terrigenous sediments. This photo, taken from space, shows sediment entering the Gulf of Mexico from the Mississippi River. Figure 5.7 Sources of terrigenous sediments. tive shells and skeletons. Some of this sediment derives from larger mollusk shells or from stationary colonial animals such as corals, but most of the organisms that produce biogenous sediments drift free in the water as plankton (about which you'll learn in Chapters 14 and 15). After the death of their owners, the hard structures fall to the bottom and accumulate in layers. Biogenous sediments are most abundant where ample nutrients encourage high biological productivity, usually near continental margins and areas of upwelling. Over millions of years, organic molecules within these sediments can form oil and natural gas (see Chapter 17 for details). Note in Table 5.2 that biogenous sediments cover a larger percentage of the area of the ocean floor than terrigenous sediments do, but the terrigenous sediments dominate in total volume. b Dust from the Gobi Desert blows eastward across the Pacific on 18 March 2002. The particles will fall to the ocean surface and descend slowly to the bottom to end up as terrigenous sediments. 'An important effect of this injection of ash into the atmosphere is discussed in Questions from Students #4 on page 161. © The ash cloud caused by the April 2010 eruption of Eyjafjallajökull, a volcano in Iceland. The wind transported ash from the eruption for hundreds of kilometers and greatly disrupted aviation in Europe. Much of the ash ended up in the North Atlantic. NASA/BSFC, ORBIMAGE, SeaWi FS Wisconsin-Madison/MCDIS Science Team/NASA

Applications and Investigations in Earth Science (9th Edition)
Applications and Investigations in Earth Science (9th Edition)
9th Edition
ISBN:9780134746241
Author:Edward J. Tarbuck, Frederick K. Lutgens, Dennis G. Tasa
Publisher:Edward J. Tarbuck, Frederick K. Lutgens, Dennis G. Tasa
Chapter1: The Study Of Minerals
Section: Chapter Questions
Problem 1LR
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Where do you think most terrigenous sediment ends up—close to the shore or far away from the shore?

a Rivers are the main source of terrigenous sediments. This photo, taken from space, shows sediment entering the Gulf of Mexico from the Mississippi River. Figure 5.7 Sources of terrigenous sediments. tive shells and skeletons. Some of this sediment derives from larger mollusk shells or from stationary colonial animals such as corals, but most of the organisms that produce biogenous sediments drift free in the water as plankton (about which you'll learn in Chapters 14 and 15). After the death of their owners, the hard structures fall to the bottom and accumulate in layers. Biogenous sediments are most abundant where ample nutrients encourage high biological productivity, usually near continental margins and areas of upwelling. Over millions of years, organic molecules within these sediments can form oil and natural gas (see Chapter 17 for details). Note in Table 5.2 that biogenous sediments cover a larger percentage of the area of the ocean floor than terrigenous sediments do, but the terrigenous sediments dominate in total volume. b Dust from the Gobi Desert blows eastward across the Pacific on 18 March 2002. The particles will fall to the ocean surface and descend slowly to the bottom to end up as terrigenous sediments. 'An important effect of this injection of ash into the atmosphere is discussed in Questions from Students #4 on page 161. © The ash cloud caused by the April 2010 eruption of Eyjafjallajökull, a volcano in Iceland. The wind transported ash from the eruption for hundreds of kilometers and greatly disrupted aviation in Europe. Much of the ash ended up in the North Atlantic. NASA/BSFC, ORBIMAGE, SeaWi FS Wisconsin-Madison/MCDIS Science Team/NASA
Transcribed Image Text:a Rivers are the main source of terrigenous sediments. This photo, taken from space, shows sediment entering the Gulf of Mexico from the Mississippi River. Figure 5.7 Sources of terrigenous sediments. tive shells and skeletons. Some of this sediment derives from larger mollusk shells or from stationary colonial animals such as corals, but most of the organisms that produce biogenous sediments drift free in the water as plankton (about which you'll learn in Chapters 14 and 15). After the death of their owners, the hard structures fall to the bottom and accumulate in layers. Biogenous sediments are most abundant where ample nutrients encourage high biological productivity, usually near continental margins and areas of upwelling. Over millions of years, organic molecules within these sediments can form oil and natural gas (see Chapter 17 for details). Note in Table 5.2 that biogenous sediments cover a larger percentage of the area of the ocean floor than terrigenous sediments do, but the terrigenous sediments dominate in total volume. b Dust from the Gobi Desert blows eastward across the Pacific on 18 March 2002. The particles will fall to the ocean surface and descend slowly to the bottom to end up as terrigenous sediments. 'An important effect of this injection of ash into the atmosphere is discussed in Questions from Students #4 on page 161. © The ash cloud caused by the April 2010 eruption of Eyjafjallajökull, a volcano in Iceland. The wind transported ash from the eruption for hundreds of kilometers and greatly disrupted aviation in Europe. Much of the ash ended up in the North Atlantic. NASA/BSFC, ORBIMAGE, SeaWi FS Wisconsin-Madison/MCDIS Science Team/NASA
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