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Hydrogeological Systems

Delineating boundaries using basin geometry and geostatistics
by

Milos Pelikan

on 29 September 2014

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Transcript of Hydrogeological Systems

"The term sedimentary basin is used to refer to any geographical feature exhibiting subsidence and consequent infilling by sedimentation. As the sediments are buried, they are subjected to increasing pressure and begin the process of lithification. A number of basins formed in extensional settings can undergo inversion which has accounted for a number of the economically viable oil reserves on earth which were formerly basins."
(wikipedia)
Delineating Hydrogeology Units using
Aquifer Geometry & Geostatistics
Uplands
Basin
Margin
Basin
?
?
Basement Rocks
Surface
Aquifers &
Aquitards
Where are these boundaries?
Basement Top
Surface
-
=
Thickness
Use a edge detection method
called directional density
Combines directional parameter derived
from thickness and a standard cluster
and classification technique.
Implemented in a GIS.
Thickness
Basin
Classification
Dendrogram for defining
class relationships
1
2
3
Dendrogram for defining
class relationships
Milos Pelikan
Basin Classification
Simple
Defensible
Repeatable
Background
About Aquifers
The problem
defined
Input 1 = Surface terrain
Input 2 = Top of Basemment Terrain
Use thickness as surface to
classify basin
Uplands
Basin
Basin Margin
the Result = classified thickness
Best at Full Screen
Lots of basins!
Quite a few in Qz!
Current basin boundary
at broad scale
Current basin boundary
at broad scale
Full transcript