Latite
The latite is a volcanic outflow rock named after the central Italian region of Latium , one of its main distribution areas.
description
In Latit is the volcanic equivalent of monzonite . He is related to the Andesites . The main components are plagioclase , sanidine and pyroxene . It also contains augite , hornblende and biotite . In a fine-grained to dense base material there are insects made of plagioclase, sanidine and pyroxene. The pattern of the ground mass is trachytic to rockitic with equally large, unregulated grains.
The distinction to the andesites is made by the latite's higher potassium feldspar and biotite content. In special cases, with a fine crystalline or glassy structure, a distinction is only possible with technical analysis methods.
Varieties are absarokite (olivine latite basalt) and shoshonite ( olivine- containing augitlatite). Joseph Paxson Iddings dealt with their descriptions .
history
The rock was first scientifically described in 1898 by the American geologist Frederick Leslie Ransome , he referred to Italian deposits.
Occurrence and use
In addition to Lazio, the rock also occurs on Stromboli , in the French Massif Central ( Monts Dore ) and in Germany in the Siebengebirge ( Stenzelberg , Wolkenburg , Hirschberg ). It can be used as a building material. Numerous buildings were built with it, including the Heisterbach monastery near Bonn , which was built with Latit vom Stenzelberg and is now only in ruins . The latite deposits in the Palatinate in the vicinity of the district town of Kusel were formerly also called Kuselite .
literature
- Wolfhard Wimmenauer: Petrography of igneous and metamorphic rocks . Stuttgart (Enke) 1985 ISBN 3-432-94671-6
Individual evidence
- ^ F. Ransom. Bull. US Geol. Survey, 1898, No. 89, p. 59
- ^ FJ Loewinson-Lessing / EA Struve: Petrografitscheski Slowar . Moskwa 1937, p. 167
- ↑ Gerrit Knape and Marek Locmelis: Stromboli. ( Memento of the original from October 7, 2007 in the Internet Archive ) Info: The archive link was inserted automatically and has not yet been checked. Please check the original and archive link according to the instructions and then remove this notice. Excursion to Italy 2003, Institute for Mineralogy, University of Hanover
- ^ Jean-François Pastre: Les nappes alluviales de l'Allier en Limagne (Massif Central, France). Stratigraphie et corrélations avec le volcanisme régional. Quaternaire, Vol. 16, No. 3, 2005, pp. 153–175 (pdf; 3.14 MB)
- ^ Geological Service NRW: Geological overview. ( Page no longer available , search in web archives ) Info: The link was automatically marked as defective. Please check the link according to the instructions and then remove this notice. Final report on the preparation of a decision by the state government and the region as to whether a dialogue on the establishment of a national park should be initiated in the area of the Siebengebirge, April 2007, p. 10 (pdf)
