Rock of the Month - December 2012

Rock of the Month
ArchiveRockMonth-Archive.html
 

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Stills from thin sectionsRockMonth-2012-12-c.html

Thin sections

Unica
PPLhttp://www.open.ac.uk/earth-research/tindle/AGT/mosaics/zgoogle_german1_ppl/index.html

Examples of Lahnmarmor marble.

The red colouration is derived from volcanic material that fell into the reef.

Unica
XPLhttp://www.open.ac.uk/earth-research/tindle/AGT/mosaics/zgoogle_german1_xpl/index.html
Wirbelau
PPLhttp://www.open.ac.uk/earth-research/tindle/AGT/mosaics/zgoogle_german2_ppl/index.html
Wirbelau
XPLhttp://www.open.ac.uk/earth-research/tindle/AGT/mosaics/zgoogle_german2_xpl/index.html
Hahnstätten
PPLhttp://www.open.ac.uk/earth-research/tindle/AGT/mosaics/zgoogle_german3_ppl/index.html
Schupbach (Wiedisch Rot)
PPLhttp://www.open.ac.uk/earth-research/tindle/AGT/mosaics/zgoogle_german4_ppl/index.html
Schupbach (Wiedisch Rot)
XPLhttp://www.open.ac.uk/earth-research/tindle/AGT/mosaics/zgoogle_german4_xpl/index.html

Object movie

Specimen
rotationRockMonth-2012-12-b.html

Learn More

Museum websitehttp://www.lahn-marmor-museum.de

Welcome


Rock of the Month - for December we showcase specimens of fossiliferous limestone from Germany. They come from the famous Lahn-Marmor Museum in Villmar, where a large polished wall of richly-coloured “marble” is displayed in-situ (click here to see it).

The Lahnmarmor marble is about 380 million years old and formed when large parts of Germany were submerged beneath an equatorial sea. Prominent in the samples are stromatoporoids, an extinct group of marine animals intermediate between sponges and corals. Corals, brachiopods and gastropods are also found in the reef assemblage. At various times the region was subjected to volcanic activity and the fallout from this contributed greatly to the reef-building process (and to the red colour seen in some of the samples).

Lahnmarmor marble has been used as a decorative building stone for centuries. Examples include the famous epitaphs of Mainz Cathedral such as St Matthias in Trier (the only apostle grave north of the Alps). The rock was also used in the baroque marble of Weilburg castle, at the altars of the Mannheim Jesuit church in the monastery church Amorbach, in Berlin and Wurzburg Cathedral, the Hermitage in St Petersburg and the Kremlin, in the lobby of the Empire State Building in New York, the Kurhaus in Wiesbaden and in the palace of the maharajas of Tagore in India.

Credits: Wilfried Pinsdorf of ART-I-S Multimedi@gentur & 360PLUS, Havixbeck

Historic photographsRockMonth-2012-12-d.html