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Chapter 22 Evidence for Early and Mid-Cryogenian glaciation in the Northern Arabian-Nubian Shield (Egypt, Sudan, and western Arabia) - Photograph supplement

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Title: Chapter 22 Evidence for Early and Mid-Cryogenian glaciation in the Northern Arabian-Nubian Shield (Egypt, Sudan, and western Arabia) - Photograph supplement
Author: Mukherjee, Sumit K.; Stern, Robert J.; Ali, Kamal A.
Abstract: Companion photographs to the book chapter Stern, Robert J., Johnson, Peter R., Ali, Kamal A., and Mukherjee, Sumit K. 2011. “Evidence for Early and Mid-Cryogenian glaciation in the Northern Arabian-Nubian Shield (Egypt, Sudan, and western Arabia).” In: Arnaud, E., Halverson, G. P. and Shields-Zhou, G. (eds) The Geological Record of Neoproterozoic Glaciations. Geological Society, London, Memoirs, 36, 277-284.
URI: http://hdl.handle.net/10214/9443
Date: 2011


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Ch22_Fig_1a_Mukherjee.jpg 118.1Kb JPEG image Thumbnail A) Neoproterozoic (~740 Ma) Banded Iron Formation from the Arabian-Nubian Shield. Field photograph showing folding of Sawawin (NW Arabia) BIF. Open fold with faulted hinges, suggesting deformation occurred after some consolidation of BIF (Photo credit: Dr. Sumit K. Mukherjee).
Ch22_Fig_1b_Mukherjee.jpg 127.7Kb JPEG image Thumbnail B) Neoproterozoic (~740 Ma) Banded Iron Formation from the Arabian-Nubian Shield. Field photograph showing folding of Sawawin (NW Arabia) BIF. Tightly folded BIF lacking axial-planar cleavage suggests deformation occurred prior to complete lithification, probably in association with slumping and soft-sediment deformation (Photo credit: Dr. Sumit K. Mukherjee).
Ch22_Fig_1c_Mukherjee.jpg 224.0Kb JPEG image Thumbnail C) Neoproterozoic (~740 Ma) Banded Iron Formation from the Arabian-Nubian Shield. Photomicrographs showing the typical banding in Sawawin BIF (NW Arabia) observed under the binocular microscope. The silica-rich bands are red (jasper) while the iron-rich bands are light colored (Photo credit: Dr. Sumit K. Mukherjee).
Ch22_Fig_1d_Stern.jpg 302.1Kb JPEG image Thumbnail D) Neoproterozoic (~740 Ma) Banded Iron Formation from the Arabian-Nubian Shield. Photomicrograph showing a slab of disharmoniously folded BIF, orange jasper layers and dark hematitic layers, Wadi Dabbah, Eastern Desert of Egypt (Photo credit: Dr. Robert J. Stern).
Ch22_Fig_2a_Ali.jpg 307.3Kb JPEG image Thumbnail Field photograph of Neoproterozoic (~740 Ma) Atud/Nuwaybah diamictite. A) General view of Atud Diamictite, ~740 Ma, outcrop showing strongly foliated diamictite, containing fractured clasts of granite, quartzite, marble, arkose, greywacke and conglomerate in Wadi Mubarak, Eastern Desert of Egypt (Photo credit: Dr. Kamal A. Ali).
Ch22_Fig_2b_Ali.jpg 153.4Kb JPEG image Thumbnail Field photograph of Neoproterozoic (~740 Ma) Atud/Nuwaybah diamictite. B) General view of low hillock of Atud Diamictite, ~740 Ma, in Waid Kareimc outcrop, Eastern Desert of Egypt, showing well bedded diamictite, granite, quartzite, marble, arkose, greywacke and conglomerate (Photo credit: Dr. Kamal A. Ali).
Ch22_Fig_2c_Ali.jpg 635.4Kb JPEG image Thumbnail Field photograph of Neoproterozoic (~740 Ma) Atud/Nuwaybah diamictite. C) Roadcut through Nuwaybah Diamictite, ~740 Ma, along coast highway, NW Saudi Arabia, with various sized clasts of granite, quartzite, marble, gneiss, arkose, greywacke and conglomerate (Photo credit: Dr. Kamal A. Ali).
Ch22_Fig_2d_Stern.jpg 228.5Kb JPEG image Thumbnail Field photograph of Neoproterozoic (~740 Ma) Atud/Nuwaybah diamictite. D) Large isolated clast of granite in Atud Diamictite, Neoproterozoic, ~740 Ma, Wadi Kareim. Eastern Desert of Egypt (Photo credit: Dr. Robert J. Stern).

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