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 mcdb.336.3 mcdc.335.0 mcdd.335.7 mcdThe sediment below the line where the percent weight of calcium carbonate declines to zero in core 1263C/D is ______.a.lighter in colorb.a calcareous oozec.rich in foraminifera and coccolithophored.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 recoveredfrom 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 sectionsrelevant 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. Thissection 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 thesediment water interface.1263C/D2717 m water depth3341265A3060 m water depth1266C3798 m water depth1267B4355 m water depth3051262A4755 m water depth230-335315-306139231-336-316-140-O 50 100CaCO, (wt%)30750 100CaCO, (wt%)232-50 100CaCO, (wt%)50 100CaCO, (wt%)50 100CaCO, (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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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