efer to Figure 12B-4. At what depth does the percent weight of calcium carbonate decrease to 0 in core 1263C/D? a.336.0 mcd b.336.3 mcd c.335.0 mcd d.335.7 mcd The sediment below the line where the percent weight of calcium carbonate declines to zero in core 1263C/D is ______. a.lighter in color b.a calcareous ooze c.rich in foraminifera and coccolithophore d.all of the above are correct

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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Refer to Figure 12B-4. At what depth does the percent weight of calcium carbonate decrease to 0 in core 1263C/D?
a.336.0 mcd
b.336.3 mcd
c.335.0 mcd
d.335.7 mcd

The sediment below the line where the percent weight of calcium carbonate declines to zero in core 1263C/D is ______.
a.lighter in color
b.a calcareous ooze
c.rich in foraminifera and coccolithophore
d.all of the above are correct

Figure 12B-4 provides pictures of five of the cores collected during the cruise. Each core was taken from a progressively deeper site. The shallowest core was recovered
from 2717 m water depth and the deepest core from 4755 m. The core information does not show the entire sediment record for each core, rather it notes specific sections
relevant for the examination of the PETM. The depth within the core is notated as meters composite depth (mcd). For example, the top of core 1263C/D is 334 mcd. This
section of the core was collected 334 meters below the sediment water interface. Conversely, the top of core 1262A is 138.4 mcd. It was collected 138.4 meters below the
sediment water interface.
1263C/D
2717 m water depth
334
1265A
3060 m water depth
1266C
3798 m water depth
1267B
4355 m water depth
305
1262A
4755 m water depth
230-
335
315-
306
139
231-
336-
316-
140-
O 50 100
CaCO, (wt%)
307
50 100
CaCO, (wt%)
232-
50 100
CaCO, (wt%)
50 100
CaCO, (wt%)
50 100
CaCO, (wr%)
Figure 12B-4. Photographs of five sediment cores collected during Leg 208. Depth is measured in meters composite depth (mcd). [Courtesy: Zachos et al., 2004]
Depth (medi
Transcribed Image Text:Figure 12B-4 provides pictures of five of the cores collected during the cruise. Each core was taken from a progressively deeper site. The shallowest core was recovered from 2717 m water depth and the deepest core from 4755 m. The core information does not show the entire sediment record for each core, rather it notes specific sections relevant for the examination of the PETM. The depth within the core is notated as meters composite depth (mcd). For example, the top of core 1263C/D is 334 mcd. This section of the core was collected 334 meters below the sediment water interface. Conversely, the top of core 1262A is 138.4 mcd. It was collected 138.4 meters below the sediment water interface. 1263C/D 2717 m water depth 334 1265A 3060 m water depth 1266C 3798 m water depth 1267B 4355 m water depth 305 1262A 4755 m water depth 230- 335 315- 306 139 231- 336- 316- 140- O 50 100 CaCO, (wt%) 307 50 100 CaCO, (wt%) 232- 50 100 CaCO, (wt%) 50 100 CaCO, (wt%) 50 100 CaCO, (wr%) Figure 12B-4. Photographs of five sediment cores collected during Leg 208. Depth is measured in meters composite depth (mcd). [Courtesy: Zachos et al., 2004] Depth (medi
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