06-4 sedimentary_environs_feb2010

06-4 sedimentary_environs_feb2010 - Sedimentary...

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2/24/2010 1 Sedimentary Environments Geology 11 – Principles of Geology A. M. P. Tengonciang Department of Physical Sciences University of the Philippines, Baguio ALLUVIAL FAN FLUVIAL LACUSTRINE DESERT (DUNES) PALUDAL Rock Type Breccia, conglomerate, arkose Conglomerate, sandstone, siltstone, shale Siltstone, shale, limestone, or evaporites (gypsum) Quartz arenite (sandstone) or gypsum Peat, coal, black shale, siltstone Composition Terrigenous Terrigenous Terrigenous, carbonate, or evaporite Terrigenous or evaporite Terrigenous Color Brown or red Brown or red Black, brown, gray, green Yel ow, red, tan, white Black, gray, or brown Grain Size Clay to gravel Clay to gravel (Fining upward) Clay to silt or sand (Coarsening upward) Sand Clay to silt Grain Shape Angular Rounded to angular --- Rounded --- Sorting Poor Variable Variable Good Variable Inorganic Sedimentary Structures Cross-bedding and graded bedding Asymmetrical ripples, cross- bedding, graded bedding, tool marks
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This note was uploaded on 11/09/2011 for the course GEOL 11 taught by Professor Pellejera during the Summer '11 term at University of the Philippines Diliman.

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06-4 sedimentary_environs_feb2010 - Sedimentary...

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