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Non-karstic Caves of the Pilis Mountains

The Pilis Mountains form a region 220 km2 in the Trans-Danubien Mountains between the towns of Budapest and Esztergom. They consists of narrow step, faulty, horsts, which are composed of Triassic limestones and dolomites. In these rocks over 100, mainly thermal, karst cave have developed.

In the southern region, the limestone and the dolomite is overlain by Eocene marl and Oligocene sandstone. In the sandstone extensive quarring operations have taken place. During the quarrying several sandstone caves were found. The quarrying took place in the regions of Pilisborosjen and Budakalász. The exact number of caves is not known because many of them were immediately destroyed during the quarrying.

Recently, 6 non-karstic caves have been found near the above mentioned locations. The lower levels of the larger caves have developed by karstification of the underlaying dolomite and limestone, but their upper levels are considered as non-karstic, due to the break up of the sandstone. Probably the smaller caves developed similarly but their lower levels have not been discovered.

The most important non-karstic caves in the Pilis Mountais:

1.

Papp Ferenc Cave

Sandstone, marl, limestone

Pilisborosjen

335

/-60 m

2.

Szabó József Cave

Sandstone, marl, limestone

Pilisborosjen

200

/-12 m

3.

Szofoklész Cave

Sandstone, marl

Pilisborosjen

30

/-12 m

4.

Ezüst-hegyi Lower Cave

Sandstone, marl

Budakalász

12

/-3 m

The length of the 6 non-karstic caves totals 585 m.

 

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