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đŸ‘·â›°ïžâš’ïž Kaland az ĂĄsvĂĄnyok kƑzetek vilĂĄgĂĄban # 1 EarthCache

Hidden : 6/26/2026
Difficulty:
2.5 out of 5
Terrain:
1.5 out of 5

Size: Size:   other (other)

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Geocache Description:


 

 

Ezzel a kƑzettani bemutatĂłval szeretnĂ©k meghĂ­vni mindenkit, akit Ă©rdekelnek a kƑzetek, az ĂĄsvĂĄnyok Ă©s a geolĂłgia izgalmas vilĂĄga. A Gerecse vidĂ©ke kĂŒlönösen gazdag vĂĄltozatos kƑzetekben, ĂĄsvĂĄnyokban Ă©s földtani Ă©rtĂ©kekben, ezĂ©rt kivĂĄlĂł lehetƑsĂ©get kĂ­nĂĄl arra, hogy közelebbrƑl is megismerjĂŒk a termĂ©szet Ă©vmilliĂłk alatt kialakult csodĂĄit.

BĂ­zom benne, hogy ez a bemutatĂł Ă©rdekes Ă©s tartalmas Ă©lmĂ©nyt nyĂșjt, Ă©s mĂ©g több embert ösztönöz arra, hogy felfedezze a Gerecse lenyƱgözƑ geolĂłgiai öröksĂ©gĂ©t.

 

A tatabĂĄnyai GeolĂłgiai tanösvĂ©ny a Gerecse Kapuja LĂĄtogatĂłközpont közelĂ©ben, a Szelim-barlanghoz vezetƑ Ășt mentĂ©n talĂĄlhatĂł. Ez egy rövid, de lĂĄtvĂĄnyos tanösvĂ©ny, amely a Gerecse földtani mĂșltjĂĄt Ă©s kƑzeteit mutatja be. A tanösvĂ©ny hossza körĂŒlbelĂŒl 360 mĂ©ter, ezĂ©rt nĂ©hĂĄny perc alatt vĂ©gigjĂĄrhatĂł, ugyanakkor sok Ă©rdekes ismeretet nyĂșjt.

Mit mutat be a geológiai tanösvény?

A tanösvény informåciós tåblåin a låtogatók megismerhetik:

  • a Gerecse-hegysĂ©g kialakulĂĄsĂĄt,

  • a terĂŒleten talĂĄlhatĂł triĂĄsz Ă©s jura kori mĂ©szkƑzeteket,

  • a több milliĂł Ă©vvel ezelƑtt itt hullĂĄmzĂł Ƒsi tenger emlĂ©keit,

  • a mĂ©szkövekben talĂĄlhatĂł tengeri Ă©lƑlĂ©nyek fosszĂ­liĂĄit,

  • a karsztos formĂĄk kialakulĂĄsĂĄt Ă©s a barlangkĂ©pzƑdĂ©s folyamatĂĄt. (Termalfurdo.hu)

A Szelim-barlang

A tanösvény végpontja a Szelim-barlang, amely Tatabånya egyik legismertebb természeti értéke. A barlang:

  • fokozottan vĂ©dett termĂ©szeti terĂŒlet,

  • jelentƑs rĂ©gĂ©szeti lelƑhely,

  • Ƒskori emberi Ă©s ĂĄllati leletek kerĂŒltek elƑ belƑle,

  • több nĂ©pmonda is kapcsolĂłdik hozzĂĄ, köztĂŒk a Szelim szultĂĄn legendĂĄja. (gerecsetura.hu)

Mit érdemes megfigyelni?

A séta sorån jól låthatók:

  • a mĂ©szkƑrĂ©tegek eltĂ©rƑ szĂ­nei Ă©s vastagsĂĄga,

  • a kƑzetek repedĂ©sei Ă©s vetƑdĂ©sei,

  • a vĂ­z oldĂł munkĂĄja ĂĄltal kialakĂ­tott karsztjelensĂ©gek,

  • a Gerecse jellegzetes növĂ©ny- Ă©s ĂĄllatvilĂĄga. (gerecsetura.hu)

Kiknek ajĂĄnlott?

A geológiai tanösvény ajånlható:

  • iskolai csoportoknak,

  • termĂ©szetjĂĄrĂłknak,

  • földrajz Ă©s biolĂłgia irĂĄnt Ă©rdeklƑdƑknek,

  • csalĂĄdoknak, akik rövid, mĂ©gis tartalmas kirĂĄndulĂĄst keresnek.

A tanösvĂ©ny könnyen megközelĂ­thetƑ a Gerecse Kapuja LĂĄtogatĂłközpontbĂłl, Ă©s jĂłl összekapcsolhatĂł a Turul-emlĂ©kmƱ, a Szelim-barlang Ă©s a Ranzinger Vince-kilĂĄtĂł felkeresĂ©sĂ©vel, Ă­gy egy 2–3 ĂłrĂĄs kirĂĄndulĂĄs sorĂĄn TatabĂĄnya legfontosabb termĂ©szeti lĂĄtnivalĂłi is bejĂĄrhatĂłk.

Most szeretnĂ©lek vĂ©gigvezetni benneteket a GeolĂłgiai tanösvĂ©nyen, ahol a Gerecse-hegysĂ©g vĂĄltozatos kƑzetvilĂĄgĂĄt ismerhetitek meg. A sĂ©ta sorĂĄn többfĂ©le kƑzettĂ­pussal talĂĄlkozhattok, amelyek közĂŒl sok mĂ©g abbĂłl az idƑbƑl szĂĄrmazik, amikor ezt a vidĂ©ket Ƒsi tenger borĂ­totta. A tanösvĂ©ny remek lehetƑsĂ©get nyĂșjt arra, hogy közelebbrƑl is megfigyeljĂ©tek a terĂŒlet földtani Ă©rtĂ©keit, Ă©s betekintĂ©st nyerjetek a kƑzetek kialakulĂĄsĂĄnak izgalmas vilĂĄgĂĄba.

Az Ă©lmĂ©nyt egy kis kihĂ­vĂĄssal is szĂ­nesĂ­tettem, hogy mĂ©g Ă©rdekesebb Ă©s szĂłrakoztatĂłbb legyen a felfedezĂ©s. Kellemes sĂ©tĂĄt, sok Ășj Ă©lmĂ©nyt Ă©s jĂł szĂłrakozĂĄst kĂ­vĂĄnok mindenkinek!

 

 

With this geological rock presentation, I would like to invite everyone who is interested in the fascinating world of rocks, minerals, and geology. The Gerecse region is especially rich in diverse rock formations, minerals, and geological treasures, offering an excellent opportunity to discover the natural wonders that have been shaped over millions of years.

I hope this presentation will provide an interesting and meaningful experience, and encourage even more people to explore and appreciate the remarkable geological heritage of the Gerecse Hills.

 

The TatabĂĄnya Geological Nature Trail is located near the Gerecse Gate Visitor Centre, along the path leading to the Szelim Cave. It is a short yet impressive educational trail that presents the geological history and rock formations of the Gerecse Hills. The trail is approximately 360 metres long, making it easy to complete in just a few minutes while offering plenty of interesting information.

What does the Geological Nature Trail present?

The educational information boards along the trail introduce visitors to:

  • the geological formation of the Gerecse Hills,

  • the Triassic and Jurassic limestone formations found in the area,

  • the ancient sea that covered this region millions of years ago,

  • fossils of marine organisms preserved within the limestone,

  • the formation of karst landscapes and the natural processes that created caves.

Szelim Cave

The trail ends at Szelim Cave, one of TatabĂĄnya's best-known natural attractions. The cave is:

  • a protected natural site,

  • an important archaeological location,

  • a place where prehistoric human and animal remains have been discovered,

  • associated with several local legends, including the legend of Sultan Selim.

What is worth observing?

During the walk, visitors can easily observe:

  • limestone layers of different colours and thicknesses,

  • fractures and fault lines within the rocks,

  • karst features created by the dissolving action of water,

  • the characteristic plants and wildlife of the Gerecse Hills.

Who is it recommended for?

The Geological Nature Trail is an excellent destination for:

  • school groups,

  • hikers and nature lovers,

  • anyone interested in geology, geography, and biology,

  • families looking for a short but educational excursion.

The trail is easily accessible from the Gerecse Gate Visitor Centre and can be combined with visits to the Turul Monument, Szelim Cave, and the Ranzinger Vince Lookout Tower, allowing visitors to explore Tatabánya's most important natural attractions during a pleasant 2–3 hour hike.

Now I would like to guide you along the Geological Nature Trail, where you can discover the diverse rock formations of the Gerecse Hills. During the walk, you will encounter a variety of rock types, many of which date back to the time when this region was covered by an ancient sea. The trail offers a wonderful opportunity to observe the area's geological treasures up close and gain insight into the fascinating processes that shaped these rocks over millions of years.

To make the experience even more engaging, I have added a small challenge along the way. I wish everyone a pleasant walk, many exciting discoveries, and an enjoyable time exploring the Geological Nature Trail!

 

 

⛰⚒Dolomit ⚒⛰

felsƑ triász

HUN:

A felsƑ triĂĄsz dolomit összefoglalĂłja

A felsƑ triĂĄsz dolomit a triĂĄsz idƑszak vĂ©gĂ©n, mintegy **220–200 milliĂł Ă©vvel ezelƑtt** alakult ki. Ebben az idƑszakban a mai MagyarorszĂĄg terĂŒletĂ©nek nagy rĂ©szĂ©t sekĂ©ly, meleg vizƱ trĂłpusi tenger borĂ­totta. A tengerben felhalmozĂłdĂł karbonĂĄtos ĂŒledĂ©kekbƑl elƑször mĂ©szkƑ keletkezett, amely kĂ©sƑbb magnĂ©ziumban gazdag tengervĂ­z vagy pĂłrusvĂ­z hatĂĄsĂĄra dolomittĂĄ alakult ĂĄt. Ezt a folyamatot dolomitosodĂĄsnak nevezik.

A dolomit fƑ alkotóåsvĂĄnya a dolomit (CaMg(CO₃)₂). A kƑzet ĂĄltalĂĄban vilĂĄgosszĂŒrke, szĂŒrkĂ©sfehĂ©r vagy sĂĄrgĂĄsszĂŒrke szĂ­nƱ, kemĂ©nyebb Ă©s ellenĂĄllĂłbb a mĂĄllĂĄssal szemben, mint a mĂ©szkƑ. Gyakran jĂłl rĂ©tegzett, Ă©s a karsztos terĂŒletek kialakulĂĄsĂĄban is fontos szerepet jĂĄtszik.

MagyarorszĂĄgon a felsƑ triĂĄsz dolomit a DunĂĄntĂșli-közĂ©phegysĂ©g egyik legelterjedtebb kƑzete. SzĂĄmos hegysĂ©g – pĂ©ldĂĄul a Gerecse, a Budai-hegysĂ©g Ă©s a Bakony – jelentƑs rĂ©szĂ©t ez a kƑzet Ă©pĂ­ti fel. A felsƑ triĂĄsz dolomit fontos bizonyĂ­tĂ©ka annak, hogy ezek a terĂŒletek egykor a Tethys-ĂłceĂĄn sekĂ©ly, trĂłpusi peremtengerĂ©hez tartoztak, Ă©s több mint 200 milliĂł Ă©v földtani fejlƑdĂ©sĂ©t Ƒrzik.  Olyan feladatokat vĂĄr, amelyeket csak a helyszĂ­nen lehet elvĂ©gezni (pĂ©ldĂĄul mĂ©rĂ©s, megfigyelĂ©s, összehasonlĂ­tĂĄs), nem pedig olyat, amire az informĂĄciĂł egy tĂĄblĂĄrĂłl vagy az internetrƑl is megszerezhetƑ.

FelsƑ-triász dolomitszikla

KialakulĂĄsa

A dolomit a felsƑ-triĂĄsz idƑszakban, mintegy 237–201 milliĂł Ă©vvel ezelƑtt alakult ki. A terĂŒletet ekkor sekĂ©ly, meleg tenger borĂ­totta, ahol mĂ©sziszap rakĂłdott le. KĂ©sƑbb magnĂ©ziumban gazdag tengervĂ­z hatĂĄsĂĄra a mĂ©szkƑ dolomittĂĄ alakult. Ez a folyamat a dolomitosodĂĄs.

Földtani jellemzƑi

  • VilĂĄgosszĂŒrke vagy sĂĄrgĂĄsszĂŒrke szĂ­n.
  • KemĂ©ny, jĂłl rĂ©tegzett kƑzet.
  • Gyakoriak benne a repedĂ©sek.
  • A repedĂ©sekben helyenkĂ©nt kalciterek jelenhetnek meg.
  • A felszĂ­nen mĂĄllĂĄs Ă©s aprĂłzĂłdĂĄs figyelhetƑ meg.

JelentƑsĂ©ge napjainkban

  • SegĂ­t megismerni a triĂĄsz kori tengerek környezetĂ©t.
  • Fontos Ă©pĂ­tƑipari nyersanyag.
  • ÉlƑhelyet biztosĂ­t szĂĄmos növĂ©ny- Ă©s ĂĄllatfajnak.
  • JelentƑs termĂ©szetvĂ©delmi Ă©s földtani Ă©rtĂ©k.

Helyszíni feladatok – egyetlen sziklán

1. A szikla méretének becslése

BecsĂŒld meg a szikla:

  • magassĂĄgĂĄt;
  • szĂ©lessĂ©gĂ©t;
  • lĂĄthatĂł vastagsĂĄgĂĄt.

2. Repedések megfigyelése

  • SzĂĄmold meg, hĂĄny nagyobb repedĂ©s lĂĄthatĂł.
  • MĂ©rd meg a legszĂ©lesebb repedĂ©s szĂ©lessĂ©gĂ©t.

3. Rétegek vizsgålata

  • HĂĄny rĂ©teg kĂŒlönĂ­thetƑ el?
  • Milyen vastag a legvastagabb rĂ©teg?

4. SzĂ­nvĂĄltozĂĄs

Figyeld meg, hogy:

  • mindenhol azonos szĂ­nƱ-e a kƑzet;
  • mely rĂ©szek vilĂĄgosabbak vagy sötĂ©tebbek.

5. FelĂŒlet összehasonlĂ­tĂĄsa

HasonlĂ­ts össze egy sima Ă©s egy Ă©rdes felĂŒletet:

  • Melyiken lĂĄtszik több mĂĄllĂĄs?
  • Hol talĂĄlhatĂł több moha vagy zuzmĂł?

6. Növényzet

  • A növĂ©nyek inkĂĄbb a repedĂ©sekben vagy a sima felĂŒleten nƑnek?
  • Mi lehet ennek az oka?

 

⛰⚒Dolomite ⚒⛰

Upper Triassic

ENG:

Summary of Upper Triassic Dolomite

Upper Triassic dolomite formed during the end of the Triassic Period, about 220–200 million years ago. At that time, much of present-day Hungary was covered by a shallow, warm tropical sea. Carbonate sediments accumulated on the seabed and first formed limestone. Later, magnesium-rich seawater or pore water transformed the limestone into dolomite through a process called dolomitization.

The main mineral of dolomite rock is dolomite (CaMg(CO₃)₂). The rock is usually light gray, grayish white, or yellowish gray. It is harder and more resistant to weathering than limestone. It is often well-layered and plays an important role in the formation of karst landscapes.

In Hungary, Upper Triassic dolomite is one of the most widespread rocks of the Transdanubian Mountains. It forms a significant part of several mountain ranges, including the Gerecse Mountains, the Buda Hills, and the Bakony Mountains. Upper Triassic dolomite provides important evidence that these areas once belonged to the shallow tropical margin of the Tethys Ocean, preserving more than 200 million years of geological history.

The following tasks require on-site observations and measurements that cannot be completed using information from a signboard or the internet.


Upper Triassic Dolomite Outcrop

Formation

Dolomite formed during the Upper Triassic Period, approximately 237–201 million years ago. At that time, the area was covered by a shallow, warm sea where lime mud accumulated. Later, magnesium-rich seawater transformed the limestone into dolomite. This process is called dolomitization.

Geological Characteristics

  • Light gray or yellowish-gray color.
  • Hard, well-layered rock.
  • Numerous fractures and cracks are common.
  • Calcite veins may occur within the fractures.
  • Weathering and surface fragmentation can often be observed.

Present-Day Importance

  • Helps scientists understand the environment of Triassic seas.
  • An important raw material for the construction industry.
  • Provides habitat for many plant and animal species.
  • Has significant geological and nature conservation value.

Field Tasks – At a Single Rock Outcrop

1. Estimate the Size of the Rock

Estimate the:

  • height;
  • width;
  • visible thickness.

2. Observe the Fractures

  • Count the number of major fractures visible.
  • Measure the width of the widest fracture.

3. Examine the Rock Layers

  • How many distinct layers can you identify?
  • How thick is the thickest layer?

4. Observe Color Variations

Determine whether:

  • the rock has the same color throughout;
  • some parts are lighter or darker than others.

5. Compare Surface Textures

Compare a smooth surface with a rough surface:

  • Which surface shows more signs of weathering?
  • Which surface has more moss or lichens?

6. Vegetation

  • Do plants grow mainly in the fractures or on the smooth rock surface?
  • What do you think is the reason for this?

Akkor a kĂ©rdĂ©sek kedves geovadĂĄszok đŸ€©Â 

1. HĂĄny jĂłl elkĂŒlönĂ­thetƑ rĂ©teg figyelhetƑ meg a dolomitsziklĂĄn, Ă©s kb. milyen vastag a legvastagabb rĂ©teg?

2. Håny 1 cm-nél szélesebb repedés låtható a sziklån, és mekkora a legszélesebb repedés?

3. A növĂ©nyzet fƑkĂ©nt a repedĂ©sekben vagy a sima kƑzetfelszĂ­nen talĂĄlhatĂł? Röviden indokold!

4. A szikla mely rĂ©sze mutat erƑsebb mĂĄllĂĄst (felsƑ, közĂ©psƑ vagy alsĂł rĂ©sz), Ă©s mi alapjĂĄn ĂĄllapĂ­tottad meg?

5. Hol fordul elƑ Magyarországon a dolomit?

6. A kƑzet ami elött ĂĄllsz honnan szĂĄrmazik? 

7. Csinålj egy téged igazoló bårmilyen tårgyról képet ami igazol, hogy ott voltål!

Köszönöm szĂ©pen a logolĂĄst đŸ€© kĂ©rek mindenkit hogy 24 ĂłrĂĄn belĂŒl kĂŒldje el a vĂĄlaszokat đŸ€© mert ha nem teszi törlĂ©sre kerĂŒlt a log. Köszönöm szĂ©pen a megĂ©rtĂ©st đŸ€©

So the questions are here, dear geohunters đŸ€©

1. How many clearly distinguishable layers can be observed in the dolomite rock, and approximately how thick is the thickest layer?

2. How many cracks wider than 1 cm are visible in the rock, and approximately how wide is the widest crack?

3. Is the vegetation found mainly in the cracks or on the smooth rock surface? Briefly explain your answer.

4. Which part of the rock shows stronger weathering (upper, middle, or lower part), and what observations led you to that conclusion?

5. Where does dolomite occur in Hungary?

6. Where does the rock you are standing in front of originate from?

7. Take a photo of any object that can verify that you were there (e.g., something personal or identifiable).

Thank you very much for logging in đŸ€©Â I ask everyone to send the answers within 24 hours đŸ€© because if you don't, the log will be deleted. Thank you very much for your understanding đŸ€©

Additional Hints (No hints available.)

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