sedimentary geology geos 240 camosun college dr. tark hamilton text: sediments & basins: andrew...
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Sedimentary GeologySedimentary GeologyGeos 240 Camosun College Geos 240 Camosun College
Dr. Tark HamiltonDr. Tark Hamilton
Text: Text: Sediments & BasinsSediments & Basins: Andrew D. Miall, : Andrew D. Miall, 20062006
Lab: Lab: Ancient Environments & the Ancient Environments & the Interpretation of Geologic HistoryInterpretation of Geologic History , Lynn S. , Lynn S.
Fichter & David J. Poche, 3Fichter & David J. Poche, 3rdrd ed. 2001 ed. 2001
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Sedimentary Sedimentary GeologyGeology
Geos 240 – Geos 240 – IntroductionIntroduction
Chapter 1Chapter 1Dr. Tark HamiltonDr. Tark Hamilton
Camosun CollegeCamosun College
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SEDIMENTS = CSI SEDIMENTS = CSI EARTH!EARTH!
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Sedimentary GeologySedimentary GeologyGeos 240: Geos 240:
Dr. Tark HamiltonDr. Tark Hamilton
Sediments & BasinsSediments & Basins: Andrew D. Miall, 2006: Andrew D. Miall, 2006
Introduction: Why Study Sediments?Introduction: Why Study Sediments?
Record of Earth History: environments, orbits, Record of Earth History: environments, orbits, climate, atmosphere, sea level, physical climate, atmosphere, sea level, physical processesprocesses
Natural Resources: Building Stone; Aggregate; Natural Resources: Building Stone; Aggregate; Hydrocarbons: Coal, Oil, Gas; Salts: Halite, Hydrocarbons: Coal, Oil, Gas; Salts: Halite, Gypsum, Nitrates; SMS: Pb-Zn, Ground Water…Gypsum, Nitrates; SMS: Pb-Zn, Ground Water…
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Folded & Faulted Upper Jurassic Coal-bearing SedimentsFoothills, Canadian Rockies: Canmore Alberta
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Sedimentary GeologySedimentary GeologyGeos 240: Geos 240:
Dr. Tark HamiltonDr. Tark Hamilton
Sediments & BasinsSediments & Basins: Andrew D. Miall, 2006: Andrew D. Miall, 2006
Introduction: Where to Sediments Occur?Introduction: Where to Sediments Occur?
BasinsBasins: low lying areas for tectonic or erosional : low lying areas for tectonic or erosional causescauses
Under WaterUnder Water : Seas, Lakes, Rivers: Seas, Lakes, Rivers On LandOn Land: Deserts, By Glaciers, By Mountains: Deserts, By Glaciers, By Mountains From WeatheringFrom Weathering : Chemical, Mechanical : Chemical, Mechanical FromTransportFromTransport : By Ice, Water, Wind, Mass : By Ice, Water, Wind, Mass
WastingWasting
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ISOPACH MAPISOPACH MAP
Sediment Thickness in Km: 60% of Earth Sediment Thickness in Km: 60% of Earth > 500m, 13% > 10 km> 500m, 13% > 10 km
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Sedimentary Sedimentary Basins:Basins:
Mackenzie-BeaufortMackenzie-BeaufortWestern Canada (Alberta - NE BC)Western Canada (Alberta - NE BC)
Williston (Sask – Man – Mont -Dakotas)Williston (Sask – Man – Mont -Dakotas)Appalachain, Michigan, West Texas, Green Appalachain, Michigan, West Texas, Green
RiverRiverNorth SeaNorth Sea
BalticBalticDeep Marine: Pacific, Indian, AtlanticDeep Marine: Pacific, Indian, Atlantic……
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NORTH NORTH AMERICANAMERICAN
SEDIMENTARSEDIMENTARY BASINSY BASINS
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What can various sediments What can various sediments reveal?reveal?
Earth’s Oldest Rocks are FeCOEarth’s Oldest Rocks are FeCO33 ~ 3.75 Ga ~ 3.75 Ga from Eastern Hudson’s Bay/Ungava Peninsula from Eastern Hudson’s Bay/Ungava Peninsula (N. Dauphas, S. Mojzsis & N. Cates 2007. (N. Dauphas, S. Mojzsis & N. Cates 2007. Oldest Rocks Show How Earth May Have Oldest Rocks Show How Earth May Have Dodged Frozen Fate Of Mars, E.P.S. L.)Dodged Frozen Fate Of Mars, E.P.S. L.)
Seasonal Occupation of a Late Middle Seasonal Occupation of a Late Middle Woodland Archeological Site (D.S. Brose Woodland Archeological Site (D.S. Brose 1994. The South Park Village Site and the 1994. The South Park Village Site and the Late Prehistoric Whittlesey Tradition of Late Prehistoric Whittlesey Tradition of Northeast Ohio (Monogaphs in World Northeast Ohio (Monogaphs in World Archaeology, Vol 20. 226p.)Archaeology, Vol 20. 226p.)
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What can various sediments What can various sediments reveal?reveal?
Proterozoic Orthoquartzites – Rodinia’s Super Proterozoic Orthoquartzites – Rodinia’s Super Continent Long lasting DesertContinent Long lasting Desert
Northern Hemisphere Harbour Sediments Northern Hemisphere Harbour Sediments Worldwide : 1920’s – 1980’s Pb from gasolineWorldwide : 1920’s – 1980’s Pb from gasoline
Short Lived Radionuclides from Atmospheric Short Lived Radionuclides from Atmospheric Weapons Testing 1956-1964, more in Weapons Testing 1956-1964, more in northern hemisphere plus: metals, dioxins, northern hemisphere plus: metals, dioxins, pharmaceuticalpharmaceutical
History of fluid motions in Sedimentary History of fluid motions in Sedimentary BasinsBasins
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CONCEPTS: Processes Products
Sedimentolgy, Sedimentolgy, Stratigraphy, Stratigraphy, Diagenesis Diagenesis
Environments, Environments, Groundwater Groundwater Flow, Rock Flow, Rock PropertiesProperties
Weathering, Weathering, Cements, Cements, ConcretionsConcretions
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REGIONAL SETTING REGIONAL SETTING & FACIES ANALYSIS& FACIES ANALYSIS
Wingate Ss
Kayenta Fm
Navajo SsUnit Containing Iron Concretions
Page Ss
Carmel Fm
Entrada Ss
Morrison FmLacustrine,Playa, Floodplains
Eolian
Sabkha
Fluvial
Eolian
Jura
ssic
Unit
s
Eolian
Eolian
N
Jurassic Outcrops
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How do we study How do we study sediments, sediments,
sedimentary rocks and sedimentary rocks and sedimentary basins?sedimentary basins?
StratigraphyStratigraphy : Geophysics, Petrophysics, : Geophysics, Petrophysics, BoreholesBoreholes
LithologiesLithologies : Rock types, Geometries, : Rock types, Geometries, ProvenanceProvenance
EnvironmentsEnvironments : Fossils, Sedimentary : Fossils, Sedimentary Structures,Structures,
Minerals, Isotopes, Geochemistry, FluidsMinerals, Isotopes, Geochemistry, Fluids
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Different Kinds of Different Kinds of StratigraphyStratigraphy
LithostratigraphyLithostratigraphy : composition, extent, : composition, extent, classificatioclassificatio
ChronostratigraphyChronostratigraphy : dating & : dating & correlationcorrelation
BiostratigraphyBiostratigraphy : : fossil content, fossil content, assemblagesassemblages
MagnetostratigraphyMagnetostratigraphy : : magnetic magnetic reversals & directionsreversals & directions
Stable Isotope StratigraphyStable Isotope Stratigraphy : : 18/1618/16O, O, 13/1213/12CC
Sequence StratigraphySequence Stratigraphy : : tectonics, tectonics, eustasy, cycleseustasy, cycles
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SEDIMENTS = CSI SEDIMENTS = CSI EARTH!EARTH!
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