topic Re: How to create 3D solid geologic model of subsurface in 3D Questions

How to create 3D solid geologic model of subsurface

MinaRahimi — Mon, 14 Jun 2010 18:15:49 GMT

Hi,

My data includes X,Y,Z. I also have the thickness of each geologic layer. I can create TIN of each geologic layer but I don't know how can I fill the gap between these layers.

How can I create 3d solid geologic model in ArcGIS?

Thanks,

Mina

Re: How to create 3D solid geologic model of subsurface

JakubSisak — Tue, 15 Jun 2010 18:45:03 GMT

This is normally done by extruding between 2 surfaces which created a multipatch geological layer. You will need 2 TIN surfaces (top surface and bottom surface) and a polygon layer containing input features that defines the area you wish to extrude.
See Toolbox -> 3D Analyst Tools -> TIN Surface -> Extrude Between

Re: How to create 3D solid geologic model of subsurface

MinaRahimi — Thu, 17 Jun 2010 14:58:48 GMT

What should be the input polygon layer? How can I define the area between surface and bottom tins?

Re: How to create 3D solid geologic model of subsurface

JakubSisak — Thu, 17 Jun 2010 15:02:27 GMT

What should be the input polygon layer? How can I define the area between surface and bottom tins?

The Input Polygon layer is basically the 2D (Plan View) Area of interest, or the most outer extent of your model.

Help on "Extrude Between" provides an explanation on this including a figure with visual...

Re: How to create 3D solid geologic model of subsurface

MinaRahimi — Mon, 21 Jun 2010 18:32:57 GMT

Thanks alot

It works.

Mina

Re: How to create 3D solid geologic model of subsurface

MinaRahimi — Tue, 13 Jul 2010 02:52:04 GMT

Hi,

It works but the layers are not correct. The geologic layers that are made by this way do not correspond with the existing map.

I used bedrock geology for the polygon feature. Do you know what should I do?

Thanks

Mina