Penedo de Lexim, Cheleiros, Lisboa, Portugal
Posted by: Groundspeak Premium Member paulohercules
N 38° 53.547 W 009° 18.697
29S E 472975 N 4304887
Quick Description: [PT] Disjunção colunar basáltica resultante do processo de arrefecimento do magama. [EN] Basaltic columnar jointing resulting from the magma cooling process.
Location: Lisboa, Portugal
Date Posted: 1/6/2014 6:33:41 AM
Waymark Code: WMJW4G
Published By: Groundspeak Premium Member RakeInTheCache
Views: 14

Long Description:
[PT] O Penedo de Lexim representa parte de uma conduta vertical de um antigo vulcão, por onde o magma ascendeu para zonas mais superficiais da crusta, há cerca de 72 milhões de anos. Esta conduta alimentou um vulcão, entretanto erodido que, intruiu em calcários do Cretácico. Um dos aspectos mais relevantes deste sítio é a ocorrência de disjunção colunar com uma perfeição rara de observar em Portugal continental. A rocha encontra-se estruturada em colunas com base hexagonal que resultaram da contracção da lava durante o seu arrefecimento.
Fonte: Adaptado de "Património geológico a visitar em Portugal".

[EN] Penedo de Lexim represents part of a volcanic conduit of an ancient volcano through which the magma ascended to shallower zones of the crust about 72 million years ago. This conduit fed a volcano - that has been completely eroded - which intruded into limestones of the Cretaceous age. One of the most relevant aspects of this site is the occurrence of a columnar jointing with a perfection rarely found elsewhere on the Portuguese mainland. The rock is structured in columns with a hexagonal base, which resulted from contraction during the cooling of the lava.
Source: Adapted from "Geological heritage to visit in Portugal"
Waymark is confirmed to be publicly accessible: yes

Parking Coordinates: N 38° 53.545 W 009° 18.740

Access fee (In local currency): .00

Requires a high clearance vehicle to visit.: no

Requires 4x4 vehicle to visit.: no

Public Transport available: no

Website reference: [Web Link]

Visit Instructions:
No specific requirements, just have fun visiting the waymark.
Search for...
Geocaching.com Google Map
Google Maps
MapQuest
Bing Maps
Nearest Waymarks
Nearest Places of Geologic Significance
Nearest Geocaches
Nearest Benchmarks
Create a scavenger hunt using this waymark as the center point
Recent Visits/Logs:
Date Logged Log User Rating  
bmps2003 visited Penedo de Lexim, Cheleiros, Lisboa, Portugal 5/2/2015 bmps2003 visited it
correiart visited Penedo de Lexim, Cheleiros, Lisboa, Portugal 7/30/2014 correiart visited it
Kelux visited Penedo de Lexim, Cheleiros, Lisboa, Portugal 11/24/2011 Kelux visited it

View all visits/logs