see if this helps:
double[][,] glbl = new double[3][,];
double[,] temp = new double[3, 3];
double id = 0.05d;
for (int i = 0; i < 3; i++)
{
for (int j = 0; j < 3; j++)
{
for (int k = 0; k < 3; k++)
{
temp[j,k] = id++;
}
}
glbl[i] = temp;
temp = new double[3, 3];
}
Assuming you might want to associate a name (string) with your geo-data: consider using a Class or Struct (or Tuple).