English Version

Hi,

We are Jessica and Angelika and go both to the class 10 d) at the Golberg-Gymnasium in Sindelfingen.





















Silt:
Silt describes unsolidified fine soils who can be partitioned in the following groups:

Roughsilt
Middlesilt
Finesilt

Loam:
Loam is a mixture of tone, sand and silt and develops out
of their deposits or through decomposition of stone.

Sand
Sand is unsolidified stone.

Tone
Tone is the colloquial word for loam and has similar characteristics.

Results:

Jurassic bestribes the era of Lias (Black Jurassic),
Dogger (Browm Jurassic) and Malm (White Jurassic).
Lias grew out of Jurassic 190 Mio years ago.