The Geology Of The Massif Montgris

The Geology of The Massif Montgris


Declaration


This report entitled "The Geology of the Massif Montgris" was composed by me and

is based in my own work.  Where the work of others has been used, it is fully

acknowledged in the text and in captions to tables and illustrations.


Signed   …………………………………….


Date  ………………………………………..


Chapter 1.0


Abstract


This is a study of the Massif Montgris, it is based on evidence gathered in the

field over 21 days of field work.  To supplement this data I have looked at

papers and works by previous visitors to the Montgris.  The units within the

area are from the Upper Cretaceous the Tertiary and the Quaternary.  I aim to

give an overall guide to the geology on a smaller scale than has previously been

accomplished. This study is mainly aimed at correctly dating the units of

limestone using micropalaeontological data.  The micropalaeontological data has

also given light into the palaeoenvironment/geography during deposition.


Chapter 2


Introduction


2.0.1 Introduction


Between the  24th  of June and the 24th of July 1995 Glen Burnham and I ventured

to Catalunya.  More precisely to Torroella de Montgris.  Torroella is in the

North East of Spain, just inland of the Mediterranean sea.  This remarkable old

town lies at the foot of the rather imposing Massif Montgris.


Locally known as "El Montgris" (literally the grey Mountain) the massif rises up

over the town and dominates the skyline.  Torroella sits on quaternary

conglomerate deposits.  These are easily eroded, hence the valley between Pals

(10Km to the south) and Torroella is extremely flat.  The valley is bisected by

the river El Ter, which flows at a leisurely pace from the foothills of the

Pyrenees.  The river flows to the south of Torroella and winds it's way to its

conclusion in the Playa de Pals (6Km east of Torroella).


El Montgris has been known to humans since prehistoric times.  It has some large

caves on its slopes that  served as a shelter to prehistoric man.  The area was

very popular with the Romans who cultivated the local area, built roads and

towns (many of which still stand to this day) such as Peretelada to the south

adjacent to Pals.


Since the time of the Romans Torroella has grown into a thriving market town.

It has always had close links with the Montgris which until recently still

served a purpose as a shelter, not , however, against the elements but against

Pirates and marauders from the sea.  In fact, on top of the Muntanya Santa

Catherina stands the remains of a thirteenth century castle (the last castle

ever built in Spain).


El Montgris has provided for  the local commerce  since it was first settled.

The local people value the Mountains greatly and still use them today.  The rock

from which our dwelling was made was quarried from the mountain, the castle rock

was quarried on the mountain.


2.0.2 Aims of Study.


When I first considered the Montgris as a project area I realised that

information would be sparse and that the project would be more complicated than

a similar project in the U.K because the environment is so very different and

resources would be a great deal more difficult to access (due to the language

barrier).  I also realised the project would probably be very different to the

proposal.


Before Glen and I left England we attempted to research the Massif Montgris

through the usual channels in order to get an idea of what we would be facing.

The research lead to a few vague leads, we new the rock was sedimentary and most

likely limestone.  Having visited the area previously I could recall a little

about the rocks but was certain of their sedimentary nature.


Our first lead came from an unexpected source.  My parents had vacationed in the

area and upon my request had asked locally about any information pertaining to

the Geology.  The result was that they brought back a research map that dated

the Massif as Cretaceous but suggested it was composed of 1 massive bed.  We

loosely agreed our study areas and arranged our projects accordin
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