Upload
mukhtiar-ghani
View
214
Download
0
Embed Size (px)
Citation preview
8/16/2019 Sedimentary Environments Cghart
1/5
3/30/2016 Sedimentary Environments Chart
https://web.archive.org/web/20090228095248/http://facstaff.gpc.edu:80/~pgore/geology/historical_lab/environmentchart.htm 1/5
Laboratory 6
Sedimentary EnvironmentsClassification Charts
Pamela J. W. Gore
Georgia Perimeter College
Copyright 1982-2004 Pamela J. W. Gore
Please print these charts in landscape mode rather than in portrait mode.
Table 1
8/16/2019 Sedimentary Environments Cghart
2/5
3/30/2016 Sedimentary Environments Chart
https://web.archive.org/web/20090228095248/http://facstaff.gpc.edu:80/~pgore/geology/historical_lab/environmentchart.htm 2/5
CONTINENTAL SEDIMENTARY ENVIRONMENTS
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,blackshale,siltstone
Composition Terri genous Terrigenous Terri genous, carbonat e, or evaporite
Terrigenous or evaporite
Terrigenous
Color B rown or red B rown or red B lack, brown, gray, green Yel low, red, t an,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
InorganicSedimentaryStructures
Cross-bedding andgraded bedding
Asymmetricalripples, cross-bedding, gradedbedding, tool marks
Symmetrical ripples,lamination, cross-bedding,graded bedding, mudcracks,raindrop prints
Cross-bedding Laminatedto massive
Organic or BiogenicSedimentary
Structures
--- Tracks,trails,burrows
Tracks, trails, burrows, rarestromatolites
Trac ks , trails Rootmarks,burrows
Fossils --- Rare freshwater shells, bones, plantfragments
Freshwater shells, fish,bones, plant fragments
--- Plantfossils,rarefreshwater shells,bones, fish
8/16/2019 Sedimentary Environments Cghart
3/5
3/30/2016 Sedimentary Environments Chart
https://web.archive.org/web/20090228095248/http://facstaff.gpc.edu:80/~pgore/geology/historical_lab/environmentchart.htm 3/5
Table 2
TRANSITIONAL SEDIMENTARY ENVIRONMENTS
DELTA BARRIER BEACH LAGOON TIDAL FLAT
Rock Type Sandstone, siltst one,shale, coal
Quartz arenite, coquina Siltstone, shale, limestone,oolitic limestone or gypsum
Siltstone, shale,calcilutite, dolostone or gypsum
Composition Terrigenous Terrigenous or carbonate Terrigenous, carbonate, or evaporite
Terrigenous, carbonate,or evaporite
Color Brown, black, gray,green, red
White to tan Dark gray to black Gray, brown, tan
Grain Size Clay to sand(Coarsening upward
Sand Clay to silt Clay to silt
Grain Shape --- Rounded to angular --- ---
Sorting Poor Good Poor Variable
InorganicSedimentaryStructures
Cross-bedding, gradedbedding
Cross-bedding,symmetrical ripples
Lamination, ripples, cross-bedding
Lamination, mudcracks,ripples, c ross-bedding
Organic or BiogenicSedimentaryStructures
Trails , burrows Trac ks , t rails , burrows Trails , burrows S tromat olit es , t rails ,tracks, burrows
Fossils Plant fragments, shells Marine shells Marine shells Marine shells
Table 3
8/16/2019 Sedimentary Environments Cghart
4/5
3/30/2016 Sedimentary Environments Chart
https://web.archive.org/web/20090228095248/http://facstaff.gpc.edu:80/~pgore/geology/historical_lab/environmentchart.htm 4/5
MARINE SEDIMENTARY ENVIRONMENTS
REEF CONTINENTAL SHELF CONTINENTAL SLOPE AND RISE ABYSSAL PLAIN
Rock Type Fossiliferouslimestone
Sandstone, shale,siltstone, fossiliferouslimestone, ooliticlimestone
Litharenite, siltstone, and shale (or limestone)
Shale, chert, micrite,chalk, diatomite
Composition Carbonat e Terrigenous or carbonate
Terrigenous or carbonate Terrigenous or carbonate
Color Gray to white Gray to brown Gray, green, brown Black, white red
Grain Size Variable,frameworks, few tono grains
Clay to sand Clay to sand Clay
Grain Shape --- --- --- ---
Sorting --- Poor to good Poor Good
InorganicSedimentaryStructures
--- Lamination, cross-bedding
Graded bedding, cross-bedding,lamination, flute marks, tool marks(turbidites)
Lamination
Organic or BiogenicSedimentaryStructures
--- Trails, burrows Trails, burrows Trails, burrows
Fossils Corals, marineshells
Marine shells Marine shells, rare plant fragments Marine shells(mostly microscopic)
Return to Contents
Go to Depositional Sedimentary Environments Lab and Exercises
https://web.archive.org/web/20090228095248/http://facstaff.gpc.edu:80/~pgore/geology/historical_lab/sedenvirons.htmhttps://web.archive.org/web/20090228095248/http://facstaff.gpc.edu:80/~pgore/geology/historical_lab/contents.php
8/16/2019 Sedimentary Environments Cghart
5/5
3/30/2016 Sedimentary Environments Chart
https://web.archive.org/web/20090228095248/http://facstaff.gpc.edu:80/~pgore/geology/historical_lab/environmentchart.htm 5/5
This page created by Pamela J. W. Gore , pg [email protected] u
Georgia Perimeter College
July 14, 199 8
Modif ied June 22, 1999
Modif ied December 1 2, 20 03
mailto:[email protected]