Earthcache Herchenberg Vulkan

To log the Earthcache take a photo of you or your gps with a sign that shows your nickname an the date when you have been here in front of the information panel or the volcano (see example photos) - the parcel is fenced unforunately, the second picture was taken from through the fence - your picture can show it certainly. ;)

Send me an e-mail with the answers to the following questions, you can log directly, i´ll write you an info, if there is something missing or wrong:
1) What does happen as the lava climbed up in the western chimney stack?
2 ) How old is the Herchenberg?
3) What means "Koloss von Oberlützingen"?

The Herchenberg is a basaltic tuff and clincer volcano. He lies northwest of Burgbrohl. There are two break out centers, a southeastern and a northwestern outbreak at the Herschenbergvulcan.Two outbreak phases can be distinguished in the southeastern outbreak center. These were separated by a resting phase.

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The first outbreak phase can be recognized by the clinkers which are steeply invading the mountain and in dark clothes stratified which lie over Kieseloolith gravels, sands, tertiary clay and devonic slate. A longer break followed, the Löss and Wehrer pumice stone moved over the volcanic ones. After that an intensive floor formation must have taken place. It could be stated, that the floor formation wasn't carried out in any cold time and that a Kratensea was available here at times. The layer consequence in the fossil Kratenmulde documents a cold time and a warm time in the connection. Löss and basalt tuffs of an obscure origin which were deposited in a second cold time lie over the humus deposits of the crater hollow.

Parts of the first outbreak phase were probably blown up away in the second outbreak phase. How at the profile in the open-cast mining one can rough tuffs and following became change storing Lapillituffe and clinkers promoted first take. Some meters of ball tuffs are above these layers with basalt balls rounded in the chimney stack and coarse clinkers are over it. And pumice stone tuffs of the Kahlenbergtyp lies solve about this Vulkaniden.

At the southwest slope steep stationary walks are, which cross-shapedly starts out from the promoting center been exposed. It is Melilith-Nephelinit. Several decimeter wide columns are in the center of the Herchenberg in the clinker tuff in the clinker tuff. These columns are filled out by Löß, Kieseloolithgeröllen, Devonfragmenten, tertiary clays and sands and Bimslapilli with a mixture. The first end break phase has to be put for wahscheinlich in the fourth to the last cold ice age. The second outbreak lies probably between the third to the last and last but one cold time.

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