sedimentary geology geos 240 – chapter 10 sequence stratigraphy
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Sedimentary Geology Geos 240 – Chapter 10 Sequence Stratigraphy. Dr. Tark Hamilton Readings from Sediments & Basins: (10:1-22) Camosun College. Depth to Basement: Structure Contour Map. How does this differ from a total sediment isopach map?. Innuitian Orogen. Cordilleran Orogen. - PowerPoint PPT PresentationTRANSCRIPT
Sedimentary Sedimentary GeologyGeology
Geos 240 – Chapter Geos 240 – Chapter 1010
Sequence Sequence StratigraphyStratigraphy
Dr. Tark HamiltonDr. Tark Hamilton Readings from Sediments & Basins: (10:1-22)Readings from Sediments & Basins: (10:1-22)
Camosun CollegeCamosun College
Depth to Basement:Depth to Basement:Structure Contour MapStructure Contour Map
How does this differ from a total sediment isopach map?
What is thismap missing?
Innuitian Orogen
App
alac
hian
Oro
gen
Cordilleran O
rogen
Structure Structure Contour Map of Contour Map of Messla Oil Field Messla Oil Field
Libya after Libya after Clifford (1980)Clifford (1980)
Sand BodyGeometry:
“Tops”
Deep
Shallow
Ghignone (1970)Ghignone (1970)
Effect of NormalFaults on Sands
Off Brazil’sPassive Margin:Tilts Down to W
Barremian-Albian IsopachBeaufort Mackenzie Basin
Note: Uplifts & Troughs
Upper Upper Cretaceous Cretaceous
Isopach Map: Isopach Map: A Delta in theA Delta in the Cannonball Cannonball
SeaSea
Pc BeartoothPlateau!
River Dominated Delta: U. River Dominated Delta: U. Cret. ABCret. AB
Can you find the 2shoestring sand bodies?
Total Sand Isopach
Sand IsolithSand IsolithPoint Bar FieldPoint Bar Field
Berg (1968)Berg (1968)
Sand IsolithSand IsolithMultiple LevelMultiple Level
ReservoirReservoirEaves (1976)Eaves (1976)
(Dots = Wells!)(Dots = Wells!)
Sand Sand IsolithIsolithFluvialFluvial
ChannelChannel
Gamma Gamma logs forlogs forControlControlCret. TXCret. TX
Aptian Grain Size:Beaufort-Mackenzie Basin
LithofaciesLithofaciesBathonianBathonian
Middle JurassicMiddle JurassicPersian GulfPersian Gulf
Reefs
Lithofacies Lithofacies Map: Albian Map: Albian
– – CenomanianCenomanianSE. MexicoSE. Mexico(Yucatan)(Yucatan)
Moran-Moran-Zanteno Zanteno (1994)(1994)
Oops! Who Left these Anhydrite Beds under the
Proposed Cixulub Impact Site?
Log FaciesLog Facies
Lower Lower Cretaceous Cretaceous SandstonesSandstones
Cannonball SeaCannonball SeaAlbertaAlberta
(Gas Sands)(Gas Sands)
Gamma Log Gamma Log FaciesFacies
NarrabeenNarrabeenPermian Fluvial Permian Fluvial
SandsSands
Sydney Basin,Sydney Basin,AustraliaAustralia
LithofaciesLithofacies
NarrabeenNarrabeenPermian Permian
Fluvial SandsFluvial Sands
Sydney Basin,Sydney Basin,AustraliaAustralia
Source
Source
Sadlerochit: Prudhoe Bay FieldSadlerochit: Prudhoe Bay FieldNorth Slope, AlaskaNorth Slope, Alaska
The End!The End!