Analyze the images in Fig. A6.7.1, which are from the South Rim of the Grand Canyon near Grand Canyon Village. The edge of the canyon here is formed by a fossiliferous limestone composed of sand-sized clastic grains, called the Kaibab Limestone, deposited about 270 million years ago during the Permian Period. Figure A6.7.1Crinoid stems(related to starfish)Brachiopod shellsHorncoral6 8 29 9 8 2top of bed(foreset) bedPARODObottom of bed 1. Notice that some of the beds in the outcrop are cross-bedded.Draw an arrow on the picture to show the direction that thewater moved here to make this cross bedding. Refer to Fig.6.26 as needed.2. Does this cross bedding indicate a steady flow of air or water, ordoes it indicate an oscillating (back and forth) flow? (Fig. 6.26¹)B. REFLECT & DISCUSS Describe your ideas about what the environmentmight have been like here about 270 million years ago (e.g., Figs. 6.270and 6.28) and the evidence and logic that you used to reach yourconclusion.

In geological terms, "cross bedding" refers to a distinctive arrangement of sedimentary layers where…

Answered: 2. Does this cross bedding indicate a…

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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Analyze the images in Fig. A6.7.1, which are from the South Rim of the Grand Canyon near Grand Canyon Village. The edge of the canyon here is formed by a fossiliferous limestone composed of sand-sized clastic grains, called the Kaibab Limestone, deposited about 270 million years ago during the Permian Period.