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EarthCache

Sprašová rokle v Zemechách u Kralup nad Vltavou

A cache by Dujdu Send Message to Owner Message this owner
Hidden : 12/5/2008
Difficulty:
3.5 out of 5
Terrain:
4 out of 5

Size: Size: not chosen (not chosen)

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Geocache Description:

Erosion notch in the loess
layers with steppic black soil islands of vegetation on the edge of ravine.

On the southern end of village Zemechy, perhaps 200 m ssw from church, begins at once over the past houses legislatively protected territory referred as loessal gulch.
It presents one of two loessal profiles which make study in middel czech area possible to learn more about relatively entire areas of succession sediments in last glacial cycle.
Gulch is matured like young erosive notch on old hollow way way that in longitude perhaps 350 m trenchs at average 5- 10 m beneath diginity surrounding terrain.
The highist wall is 19 m high.
Gulch prunes flat loessal dune oriented roughly v. from. direction, whose centre find approximately at point current data highest walling. From her strata slopes on both sides to in and Z. Subsoil links lies perhaps 4 m below today's day gulch. Is totalled dilapidation carboniferous arcose, whereupon consist yellow sands and chesil terrace Knovizskeho stream. Position below day valley is totalled brownish, compact, in part decalcified and hydromorphic disabled loess containing sandy washing. Be not likely to is concerned flooding blow sands. Above day gulch is ezposed loess last but one cycle. Is totalled altogether homogenous strata yellow calcic loess, in which detect diffused position reddish loess and thin sandy lamina. On on air side is perceptible almost equidistant classify into lamina about power 3- 5 cm, indicial on one - shot sand storm young sand and onwards fine dusty faction. Sandy lamina are here and there thanks bigger permeability disabled postdepozit iluviacion and rust that the them supplies appearance tundra gleies. In ezposed profile were to be as well found two as far as gamma position tundra gleies in local development like deposits seasonal wetland ecosystem.
As far as 2 m powerful provincial strata is mature like typical complex muck, unusually powerful woody backdrop and underlying para - brownearth. Muck piles from two different backdrops – lower massive clayey muck and above her recumbent classical bread - crumbs muck. Blonde interlayer thorough in the middle of lower muck be not likely to presents so - called mark sensu. Above her finds lightish muck representing soil sediment (in part make - over hlinopisky derivative from muck). Brownish, weak loessal soil above muck is as well washing earth sand derived from loess. Complex is totalled weak underlying loess and usual couple muck and brown soil. Complex is matured fragmented. Two important erosive events shoot round before deposition muck and unsound. Whole, as far as 28 m powerful loessal strata shelter washing recent epoch agricultural soils in form in part degraded muck, in which was found shard material indigenous to younger time bronze and from time transmigration nations.

In many places may be in the loessal track record bioeroze. It is a tunnel filled with invertebrates loessal compact, vertical cavity, subvertal and subhorizontal tunnels interpreted as the root traces, and the recent subrecent traces of insect traces and the activities of birds (socket with a diameter up to 10 cm and depth about 5 cm) and mammals (natural burrows and smaller holes created by rodents likely).

To log your cache you need to:
1.Make a picture with GPS in the loess.Voluntarily.
2. Measure the altitude in a ravine!
3.What is BIOEROZE?
4. Who was Bohumil Karel Vendyš?

K uznání logu musíte navštívit Zemechy a splnit následující úkoly :

1. Prilozit k logu zajímavé fotografie s GPS z zemešské Sprašové rokle. Dobrovolné.

Poslat mi email s odpovedi na následující otázky:
2. Zmerit nadmorskou výšku v rokli na souradnicích!
3. Co je to BIOEROZE?
4. Kdo byl Bohumil Karel Vendyš?

Logujte s fotkou okamžite. Odpovedi na otázky zasílejte na @, pokud nebude neco v porádku budeme vás kontaktovat.

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Current Time:
Last Updated: on 5/19/2018 3:39:56 PM Pacific Daylight Time (10:39 PM GMT)
Rendered From:Unknown
Coordinates are in the WGS84 datum

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