Help figuring out terrain type with jar test

Hi, I have some small terrain that was an old now unused plantation. I thoguht it would be cool to make a simple natural building as a beginner, and decided to do the jar test.
Maybe some small superadobe building or similar, open to anything really.

However after mixing well with water and leaving for 3 days, there is no clear division of earth types? If you look closer there is a difference right in the middle.
The lower half has some small points, and the upper half is more smooth. But normally the diagrams show 3 types and they are clearly separated so not sure how to interpet this.
Any help would be appreciated! Thank you!  

welcome to the forums Arnau!

I wonder if your mix needs more water?
In the picture it doesn't look as liquid as needed in order for the layers to sort themselves out.

I agree with Judith, I think that the soil material needs to be re-suspended in a larger volume of water. At worst case, it would reconfirm what you are seeing and makes the mystery all the more interesting!

Judith Browning wrote:welcome to the forums Arnau!

I wonder if your mix needs more water?
In the picture it doesn't look as liquid as needed in order for the layers to sort themselves out.

I agree, needs more water

For such test I was using 3 times more water than soil. Shaking for 10 minutes and left for 3 weeks.