La zona de fractura entre el Carbonífer i el Devonià al Park Güell

Avinguda del Coll del Portell, 130
Gràcia
08024
Barcelona



Latitude: 2.1514235793762
Longitude: 41.415140633215



  • Area of ​​geological interest


Description
Outcrop formed by two rock walls that form a passage (Coll. Portell Avenue) of more than 50 m in length where you can see three zones: in the gateway to the passage, clear limestone rock and clear of the Devonian At the exit of the passage we can see rocks that correspond to landslides (lithified sand grains) in gray with micro-conglomerate passes (detrital rocks) of the Carboniferous. The central part is formed by about 20 m of very crumbled rocks that locally have floury or laminated aspect, belonging to the two units mentioned.

The eye of the geologist
Devonian rocks are deformed and show a metric chart. The materials in the central part of the structure correspond to a fracture zone that, as a whole, has an incline of about 30 or to the southeast. It is a fragile type structure that puts in contact older rocks (Devonian) on younger rocks (Carboniferous), which is why it is called a reverse fault.

Materials in the fracture or failure zone have varying degrees of crushing. Those of size of size of the finest grains receive the name of flour of fault, whereas those of greater size are called breach of fault.

Internally, we observe a set of smaller structures that give an idea of ​​the direction and sense of relative displacement of the blocks involved.

Interest
The surface observation of this type of structure is an exceptional and extremely important fact, since it provides information about the geological history of the area. In this case it allows us to know that in a given time there was a compressive movement that placed younger rocks above older rocks. This information is essential and necessary when undertaking engineering works, such as the construction of a subway network in a city because the fault zones represent areas of rock weakness that can easily be ceded and collapsed. lapse

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La zona de fractura entre el Carbonífer i el Devonià al Park Güell

Avinguda del Coll del Portell, 130
Gràcia / La Salut
08024 - Barcelona
Description
Outcrop formed by two rock walls that form a passage (Coll. Portell Avenue) of more than 50 m in length where you can see three zones: in the gateway to the passage, clear limestone rock and clear of the Devonian At the exit of the passage we can see rocks that correspond to landslides (lithified sand grains) in gray with micro-conglomerate passes (detrital rocks) of the Carboniferous. The central part is formed by about 20 m of very crumbled rocks that locally have floury or laminated aspect, belonging to the two units mentioned.

The eye of the geologist
Devonian rocks are deformed and show a metric chart. The materials in the central part of the structure correspond to a fracture zone that, as a whole, has an incline of about 30 or to the southeast. It is a fragile type structure that puts in contact older rocks (Devonian) on younger rocks (Carboniferous), which is why it is called a reverse fault.

Materials in the fracture or failure zone have varying degrees of crushing. Those of size of size of the finest grains receive the name of flour of fault, whereas those of greater size are called breach of fault.

Internally, we observe a set of smaller structures that give an idea of ​​the direction and sense of relative displacement of the blocks involved.

Interest
The surface observation of this type of structure is an exceptional and extremely important fact, since it provides information about the geological history of the area. In this case it allows us to know that in a given time there was a compressive movement that placed younger rocks above older rocks. This information is essential and necessary when undertaking engineering works, such as the construction of a subway network in a city because the fault zones represent areas of rock weakness that can easily be ceded and collapsed. lapse

Automatically translated with Google Translate API
Automatically translated with Google Translate API.