List of geotopes in the Unterallgäu district

This list of geotopes in the Unterallgäu district includes all known geotopes there. The list contains the official names and numbers of the Bavarian State Office for the Environment (LfU) as well as their geographical location. Around 3,400 geotopes (as of March 2020) are recorded in the Bavarian geotope register.

Surname	image	Geotope ID	Municipality / location	Geological unit of space	description	Area m² / extension m	geology	Digestion type	value	Protection status
Nagelfluh outcrop W from Bad Grönenbach	more pictures	778A001	Bad Grönenbach position	Iller-Lech region	The Nagelfluh outcrop, which is barely visible and completely overgrown, is located directly on the MN 21 district road. The outcrop was created by the mining of solidified gravel, which is heavily weathered. Remnants of geological organs can be seen on the break walls. Albrecht Penck assigns the ballast to the oldest Pleistocene Grönenbach ceiling ballast.	350 35 × 10	Type: Standard / Reference Profile, Geological Organ Type: Conglomerate	Gravel pit / sand pit	precious	no protected area
Wolfertschwendener Steige E from Wolfertschwenden	more pictures	778A002	Wolfertschwenden position	Iller-Lech region	The quarry walls consist of conglomerated gravel and are partially exposed to the bottom of the quarry with geological organs that are not very deep. The gravel, consisting of almost pure limestone and dolomite rubble, is relatively poorly rounded and comes from the Günzglacial.	300 30 × 10	Type: Rock type, Geological organ Type: Conglomerate	Gravel pit / sand pit	significant	no protected area
Nagelfluh outcrop NW from Günzegg		778A003	Boost position	Iller-Lech region	The Nagelfluh outcrop was created by a former gravel pit and is heavily overgrown. The outcrop consists of solidified advancing gravel and gravel moraine from the Mindelglacial.	1000 200 × 5	Type: Rock Type: Moraine, gravel	Gravel pit / sand pit	significant	no protected area
Nagelfluh-Aufschluss W from Ottobeuren		778A004	Ottobeuren position	Iller-Lech region	The fractures of the Nagelfluh outcrop, south of Brüchlins near Ottobeuren, show crystalline gravel from the early glacial. The accumulation of quartz, quartzite and chert decreases from bottom to top. Towards the hanging walls, the pebbles become coarser and more calcareous. Solidified fine sands of the Upper Freshwater Molasse can be found at the bottom of the quarry.	40 10 × 4	Type: Layer sequence Type: Conglomerate	Gravel pit / sand pit	significant	no protected area
Former Quarry near Frickenhausen		778A005	Arbor position	Iller-Lech region	The former gravel pit opens up older gravel from the Günzglacial, which has solidified to form Nagelfluh. Yellow fine sands from the Upper Freshwater Molasse can be seen on the bottom of the quarry.	200 50 × 4	Type: Rock Type: Conglomerate	Gravel pit / sand pit	significant	no protected area
Nagelfluh outcrop SW from Ottobeuren		778A006	Ottobeuren position	Iller-Lech region	Roppel represents the Nagelfluh outcrop as a well-known example of periglacial deposits, which is also considered a type locality for the Ottobeurer gravel. The overlay by typical fluvioglacial gravel defines the chronological classification of the Günz Ice Age. The high crystalline content of up to 20% and a low calcium content characterize the pebbles of these sediments.	200 40 × 5	Type: type locality, geological organ, rock type: conglomerate	Gravel pit / sand pit	precious	no protected area
Nagelfluh-Aufschluss SE from Bad Grönenbach	more pictures	778A007	Bad Grönenbach position	Iller-Lech region	The structure of the Grönenbach gravel is open as a clear terrace edge. The sequence of the digestion begins with a good 2 meters thick, inclined layer of very coarse, matrix-supported material. Above are banks of 1 to 2 meters, with refinement from coarse gravel at the base to layers of fine sand at the top. These deposits are documented as overgrown river systems (braided river) of the immediate glacier foreland.	800 40 × 20	Type: Rock Type: Conglomerate	Gravel pit / sand pit	significant	no protected area
Molasse outcrop N by Aubauer		778A010	Kronburg position	Iller-Lech region	The sandstone location is north of the footpath on the edge of the Würm terrace to the Holocene Illerauce. The fissures and strata are traced by tree roots. The stream forms a small waterfall south of the path with adjacent sand / sandstones. Fine sediments are exposed up to the stream bed. Although molasse sandstones are often exposed on the terrace edges of the Iller, they are not always so easily accessible. Since fine sediments of the molasses are seldom exposed, the stream has a high potential for conservation.	260 20 × 13	Type: Type of rock, type of layers : sandstone, sand	Impact slope / river bed / stream profile	precious	Landscape protection area
Layer sources SE from Katzbrui		778Q002	Apple frying position	Iller-Lech region	The natural, well-pouring springs with up to 17 liters per second occur in large numbers on the slope. The springs arise between the water-permeable Mindeldeck gravel and the rather water-impermeable fine sands and marls of the Upper Freshwater Molasse. The very lime-rich water resulted in tufa formations and a small stone channel. The many springs combine to form a stream flowing in the valley floor.	8000 200 × 40	Type: layer spring, fen Type: conglomerate, marl	no information	precious	Landscape component
Geological organs SSW from Bossarts	more pictures	778R001	Wolfertschwenden position	Iller-Lech region	The geological organs are located southwest of the hamlet of Bossarts near Wolfertschwenden. They consist of round, smooth-walled, tubular structures that are up to 14 meters high. The weathering of the solution of the Nagelfluh, which consists of lime and dolomite rubble from the Günze Age, led to the creation of the geological organs, which are filled with weathered clay. The conglomerate shows calcareous alpine rocks such as dolomites, limes and red chert. The layers alternate between coarse components and sandy layers.	40 20 × 2	Type: Geological Organ Type: Conglomerate	Slope crack / rock wall	precious	Natural monument
Toteisloch SW from Herbisried	more pictures	778R002	Bad Grönenbach position	Iller-Lech young moraine region	The Toteisloch is located southwest of Herbisried near Bad Grönenbach on the edge of a small forest. The moderately deepened hollow form shows a vegetation that is noticeably different from the surroundings. The boggy soil is wet in places, but largely silted up. The dead ice hole was created by the formation of cavities as a result of ice collapse at the edge of the glacier of the outgoing high glacial from the Würm Ice Age.	1000 50 × 20	Type: Dead Ice Hole Type: Moraine	no information	precious	no protected area
Trumpet valley NE by Ziegelberg	more pictures	778R003	Bad Grönenbach position	Iller-Lech young moraine region	The largest trumpet valley in the Allgäu was formed during the last ice age. It widens like a funnel to the north, like a trumpet neck. To the north of the town of Ziegelberg there is an outermost, partially graveled group of walls. An erosion channel cuts through the Worm Ice Age moraine walls, which the railway line also follows.	2520000 3600 × 700	Type: Trumpet Valley Type: Moraine, gravel	no information	precious	no protected area
Nagelfluhfelsen on Falken NE of Ittelsburg	more pictures	778R004	Bad Grönenbach position	Iller-Lech region	The historically significant Nagelfluh outcrop on the northeastern slope of the Falken shows gravel conglomerates from deposits of the meltwater from the glaciers of the Günze Age. The origin of the pebbles is mostly limestone. Since only a few pieces are edged and most of the pieces are angular, it can be concluded that the gravel in the glacier rivers did not transport far and that the glacier front was in close proximity.	1500 50 × 30	Type: Rock wall / slope Type: Conglomerate	Slope crack / rock wall	precious	Landscape protection area
Zeller high terrace N of Bad Grönenbach		778R005	Bad Grönenbach position	Iller-Lech region	The area between Memmingen and Bad Grönenbach is one of the classic research areas in Quaternary geology. The clearly structured gravel terraces made it possible for Albrecht Penck to prove the multiple structure of the Pleistocene. The Risszeit high terrace limits the Worm Ice Age valley floor. In the west, the elevated terrace is in turn dominated by the Minimum Ice Age terrace.	93000 3100 × 30	Type: Terrace Type: Conglomerate	no information	significant	no protected area
Terrace between Heimertingen and Fellheim		778R006	Fellheim position	Iller-Lech region	The Worm Ice Age low terrace towers over the valley floor by 13 meters. Due to the occurrence of yellow flax (Linum Flavum) in a short section, this was designated as a natural monument.	60000 4000 × 15	Type: Terrace Type: Gravel	no information	significant	Natural monument
Illertal WSW from Bad Grönenbach		778R007	Bad Grönenbach position	Iller-Lech region	The partially ingrown outcrop on the Prallhang shows layers of the Upper Freshwater Molasse. The Iller's hydrodynamic river system is impaired by the barrages.	8400000 7000 × 1200	Type: Impact slope, type of layers : gravel	Impact slope / river bed / stream profile	significant	Landscape protection area, FFH area
High terrace between Egg and Lauben		778R008	Egg at the Günz position	Iller-Lech region	The maximum 12 m high Rissis Age high terrace is seldom clearly visible due to its tree population, separated from the edge of the Holocene floodplain.	63000 1800 × 35	Type: Terrace Type: Conglomerate	no information	significant	no protected area

Individual evidence

↑ Data source: Bavarian State Office for the Environment, www.lfu.bayern.de, Geotoprecherche (accessed on September 16, 2017)

Web links

Commons : Geotopes in the Unterallgäu district - collection of images, videos and audio files

Map with all coordinates: OSM | WikiMap

[1] Data source: Bavarian State Office for the Environment, www.lfu.bayern.de, Geotoprecherche (accessed on September 16, 2017)