Transcript Dockrell Sequence Stratigraphy in Core Exercise

Fluvial
Fluvial
Fluvial
Fluvial
Fluvial
Fluvial
Distal Delta
Fluvial
Fluvial
Fluvial
Fluvial
Fluvial
Fluvial
Distal Delta
Distal Delta
Distal Delta
Shelf/Prodelta
Proximal Delta
Shelf/Prodelta
Proximal Delta
Proximal Delta
Dockrell 2 (Core 1-3)
Triassic Brigadier Fm, NW Shelf, Australia
Proximal Delta
Proximal/Distal Delta
Distal Delta
Proximal Delta
Distributary Channel
Distal Delta
Distal Delta
Proximal Delta
Distal Delta
Proximal Delta
Distal Delta
Proximal Delta
Distal Delta
Distal Delta
Starved Shelf
Fluvial
Distal Delta
Distal Delta
Fluvial
Fluvial
Fluvial
Dockrell 2 (Core 1-3)
Triassic Brigadier Fm, NW Shelf, Australia
Fluvial
Proximal Delta
Proximal Delta
Proximal Delta
Fluvial
Fluvial
Fluvial
Fluvial
Fluvial
Fluvial
Fluvial
Fluvial
Fluvial
Fluvial
Fluvial
Proximal/Distal Delta
Proximal/Distal Delta
Estuarine
Fluvial
Proximal Delta
Dockrell 2 (Core 1-3)
Triassic Brigadier Fm, NW Shelf, Australia
Cong.
Shelf/Prodelta
Shelf/Prodelta
Bayhead Delta
Proximal/Distal Delta
Shelf/Prodelta
Bayhead Delta
Bayhead Delta
Dockrell 2 (Core 1-3)
Triassic Brigadier Fm, NW Shelf, Australia
Cored Interval
(Backhouse, et al., 2002)
A Core Interpretation Logic Tree
Surface of Facies Contrast Recognized
Water has deepened?
Above a discrete
parasequence
/section that
shallows up?
Flooding Surface
Lowaccommodation
fluvial capped by
marine or highaccommodation
fluvial?
Maximum
Regressive
Surface
Substantial
deepening
and/or
evidence of
erosion with
deepening?
Transgressive
Wave
Ravinement
Water has shallowed?
Slight
marinemarine
shallowing?
Evidence of subaerial
emergence or valley fill
above marine units
separated by erosional
scour or paleosol?
Within Trend Forced Regressive
Surface or Basal Surface of
Forced Regression (if no erosion)
or Regressive Wave Ravinement
(if erosional).
Shift from highaccommodation
fluvial to lowaccommodation
fluvial across
erosional surface?
Subaerial
Unconformity
Anomalously marine or aqueous section?
Evidence of starvation of terrestrial sediment within
marine section?
Marine Flooding Surface within Condensed Section
Evidence of marine flooding interval or interval of raised
water table within fluvial section?
Marine Flooding Surface within Terrestrial Section