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to the following questions:
1. In what
geological formation does the discharge of this
spring occur?
2. What geological phenomenon
forces the release of the spring at this point?
3. Observe the outlet of the
water, what is the orientation of the spring? Is the
flow abundant or scarce (is the outflow of water
observable)?
4. Add a photograph of you in the
premises, or another in which you can see an object,
or your nick on a piece of paper
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Location
There
is in Tarazona a spring of crystalline and healing waters, and of
great flow, which later channeled under the city, through the
Selcos ditch, irrigates the Turiasonense orchard. It is close to
the hermitage of San Juan Bautista that takes advantage of a cave
excavated in the rock; The current construction is from the 18th
century but its image of San Juan Bautista, from the s. XV, and
documentary references tell us that a hermitage already existed at
the end of the XII. Medieval Tarazona Christianized the place
where rituals with ancient aquatic deities would surely be held,
closely related to the cult of San Juan in similar places.
From the source, currently known as "Ojo de San Juan", calcium
bicarbonate-sulphate waters of intermediate mineralization flow:
good for paralysis, hemorrhoids, suppurations of all kinds,
external oropharyngeal conditions and even recommended to heal
hepatobiliary conditions.
Aquifer
An
aquifer is defined as a geological formation that is made up of
one or more layers of rocks, capable of storing and releasing
water. It is located in the soil in the area called "saturated
zone". Aquifers are characterized by having a certain
permeability and porosity, which are parameters that define the
hydraulic characteristics of the aquifer, that is, the movement
of water depends on the type of soil rocks.
Aquifers are formed thanks to rainwater that infiltrates the
ground until it reaches impermeable strata that prevents the
passage of water and deposits between the underground rocks. The
rainwater that infiltrates into the ground allows the porous
rocks of the aquifers to be recharged with water.
Springs
A spring arises at the
point where the boundary between a permeable layer of underground
rock and an impermeable layer reaches the surface. Rainwater seeps
through the soil into the permeable part of the subsoil or
underground rock. Seepage will stop if this permeable subsoil sits
on top of an impermeable layer and the water cannot move any
further. Depending on the slope of the layers, the water will run
along the top of the impermeable layer to a point where it reaches
the surface and emerges as a spring.
Favorable conditions for the formation of springs:
"Ojo de San Juan"
spring
As
occurs in the entire Aragonese Branch of the Iberian Cordillera,
from the hydrogeological point of view, the Mesozoic FGPs are
waterproofed at their base by the Keupe margo-evaporitic
facies.
Forced by the North-Iberian thrust, the PGFMalm-Cretaceous inf.
discharge by hydrogeological overflow its flow in the basal
conglomerates overlying the detrital Tertiary PGF, saturating it
and allowing its discharge through the spring
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