Skip to content


Geologisch Monument Zevenwegen

A cache by Draghkar Send Message to Owner Message this owner
Hidden : 04/28/2008
1 out of 5
1.5 out of 5

Size: Size: other (other)

Join now to view geocache location details. It's free!


How Geocaching Works

Please note Use of services is subject to the terms and conditions in our disclaimer.

Geocache Description:

A small outcrop of limestone from the cretaceous period. Parking is available at N50 46.062 E005 57.129

During the Cretaceous period (80 - 65 million Years ago) the South of Limburg was flooded by a Cretaceous ocean. During this flood, In this ocean, a thick layer of sand, clay and lime was deposited on the ocean floor. In the centuries that followed, the largest part of the limestone was eroded away through dissolution by rainwater that perculated through the topsoil. In the Vijlenerbos, a layer of 55 meters of limestone disappeared this way. What remained was the so called flintstone eluvium. These are the nondissolvable parts of the limestone. At a later time, sand and clay was washed between these flintstones. There are three layers of limestone that might be found in the viscinity. The most likely layer is the so called vijlen limestone, which appears on the surface at this site. On top of the Vijlen limestone, one might find a thick layer of Lixhe limestone. At the site, some of this might be present at the higher areas around. Lastly on top of that there used to be a layer of the Lanaye Limestone. this layer will be hard to find at this site, however on the higher areas in the forest one will be able to find this layer to crop. The questions to answer here are:

1.) How thick is the layer of sediment that was deposited at the cretaceous period.
2.) What type of soil can be found of top of the limestone layers according to the diagram.
3.) What is the chemical formula and the other name of the flintstone.

In het Nederlands:
1.) Hoe dik is de laag sediment welke in het krijt afgezet is.
2.) Welke grondsoort ligt bovenop de mergellagen volgens het diagram.
3.) Wat is de chemische formule, en ook de andere naam van de vuursteen.

Please log your visit with a picture of you showing your GPSr

Additional Hints (No hints available.)

Reviewer notes

Use this space to describe your geocache location, container, and how it's hidden to your reviewer. If you've made changes, tell the reviewer what changes you made. The more they know, the easier it is for them to publish your geocache. This note will not be visible to the public when your geocache is published.