Borlasbach

	Borlasbach
	The Borlasbach 150 m before the confluence with the Weißeritz
	Data
Water code	DE : 5372274
location	Eastern Ore Mountains
River system	Elbe
Drain over	Rote Weißeritz → Weißeritz → Elbe → North Sea
source	Paulshain near Dippoldiswalde ; 50 ° 54 ′ 51 ″ N , 13 ° 37 ′ 2 ″ E
Source height	402.5 m
muzzle	in the Rote Weißeritz below Rabenau (Saxony) Coordinates: 50 ° 57 '26 " N , 13 ° 37' 59" E 50 ° 57 '26 " N , 13 ° 37' 59" E;
Mouth height	259 m
Height difference	143.5 m
Bottom slope	25 ‰
length	5.8 km

The Borlasbach (formerly in the upper reaches of the Seifenbach ) is a left tributary of the Rote Weißeritz in the Saxon Eastern Ore Mountains .

course

The mouth of the Borlasbach in the Weißeritz through the railway bridge

It has its origin at the foot of the Paulsdorfer Heide near Paulshain , after which it flows north through Borlas and past Lübau , where the water flows orographically to the left into the Rote Weißeritz.

The Borlasbach has a very asymmetrical valley shape in the upper and middle reaches. The right side with its steep slopes is mostly forested, while the flatter left side is used for agriculture. In the lower reaches, from Lübau to the confluence with the Rote Weißeritz, the stream forms a narrow gorge up to 40 meters deep on the left side of the Rabenauer Grund . There were several small ponds in the upper reaches.

particularities

The occurrence of soap gold in the Borlasbach near Paulshain is remarkable , which is present in the gravel of the Niederschöna formation, no longer visible paleo soils under the ashlar sandstone deposits of the Paulsdorfer and Höckendorfer Heide and is washed out with the water at the base of the sandstone layers in insignificant quantities. Gold production through mining soap work is on record from 1560, but only once documented. Due to the small quantities, mining only took place for a short time and probably only in the summer months.

literature

Between Tharandt forest, Freital and the Lockwitztal (= values of our homeland . Volume 21). 1st edition. Akademie Verlag, Berlin 1973, p. 127.

Web links

Commons : Borlasbach - Collection of images, videos and audio files

Individual evidence

↑ W. Pälchen, H. Walter (ed.): Geology of Saxony. Geological structure and history of development . Stuttgart 2008, pp. 317-318, ISBN 978-3-510-65239-6 .
^ Alfred Seifert: Fossil gold soaps in the cenomaniac basic conglomerates near Dippoldiswalde in Saxony . In: Meeting reports and treatises of the natural research society ISIS . Warnatz & Lehmann, Dresden 1927, p. 20–26 ( online [accessed July 21, 2014]).
↑ Between Tharandter Wald, Freital and the Lockwitztal (= values of our homeland . Volume 21). 1st edition. Akademie Verlag, Berlin 1973, pp. 179–180.

[1] W. Pälchen, H. Walter (ed.): Geology of Saxony. Geological structure and history of development . Stuttgart 2008, pp. 317-318, ISBN 978-3-510-65239-6 .

[2] Alfred Seifert: Fossil gold soaps in the cenomaniac basic conglomerates near Dippoldiswalde in Saxony . In: Meeting reports and treatises of the natural research society ISIS . Warnatz & Lehmann, Dresden 1927, p. 20–26 ( online [accessed July 21, 2014]).

[3] Between Tharandter Wald, Freital and the Lockwitztal (= values of our homeland . Volume 21). 1st edition. Akademie Verlag, Berlin 1973, pp. 179–180.