Abstract
2
Abstract
This work focuses on the alteration of magmatic rocks in El Hamdania zone (Tipaza), it’s part
of Algerian coastal band. This area is one of important economic zone due to the construction
of a imported port. The main objective of this study is to analyze weathered magmatic rocks at
both of macroscopic and microscopic method using polarized observation techniques, as well,
confirmed by X-ray diffraction (XRD) and X-ray fluorescence spectrometry (XRF).
The first part of the research focuses on the identification and description of the magmatic rocks
present in the El Hamdania region. Samples are collected from the study area, and macroscopic
observations are made to assess their state of alteration. These observations provide a first
indication of the potential impact of weathering on rock properties and their future use.
Then, the polarized microscopic analyzes are carried out to study the structural and
mineralogical modifications at the microscopic level of the weathered rocks. This method is
using to identify the minerals present in the samples and to determine the effects of weathering
on their chemical composition. Microscopic observations help to better understand weathering
mechanisms and their consequences on the physical properties of rocks.
To confirm the results obtained by macroscopic and microscopic observations, X-ray
diffraction (XRD) and X-ray fluorescence spectrometry (XRF) techniques are used. XRD
analyze the crystal structure of samples and identify the mineral phases present, while XRF
provides precise information on the chemical composition of rocks.
The results of these analyzes confirm the existence of a significant alteration of the volcanic
rocks at El Hamdania area. The primary minerals are altered, and new minerals are formed as
a result of the chemical reactions that occur. These alterations can have an impact on the
mechanical properties of the rocks and on their stability in a long-rang.
This study highlights the importance of understanding the alteration of magmatic rocks in the
El Hamdania region, particularly for the economic impact linked to the construction of a port.
The results obtained from the macroscopic, microscopic and analytical analyzes allow the
identification of the changes that occur in the weathered rocks, this study is of paramount
importance to guarantee the stability and durability of infrastructure of El Hamdania.
2
Abstract
This work focuses on the alteration of magmatic rocks in El Hamdania zone (Tipaza), it’s part
of Algerian coastal band. This area is one of important economic zone due to the construction
of a imported port. The main objective of this study is to analyze weathered magmatic rocks at
both of macroscopic and microscopic method using polarized observation techniques, as well,
confirmed by X-ray diffraction (XRD) and X-ray fluorescence spectrometry (XRF).
The first part of the research focuses on the identification and description of the magmatic rocks
present in the El Hamdania region. Samples are collected from the study area, and macroscopic
observations are made to assess their state of alteration. These observations provide a first
indication of the potential impact of weathering on rock properties and their future use.
Then, the polarized microscopic analyzes are carried out to study the structural and
mineralogical modifications at the microscopic level of the weathered rocks. This method is
using to identify the minerals present in the samples and to determine the effects of weathering
on their chemical composition. Microscopic observations help to better understand weathering
mechanisms and their consequences on the physical properties of rocks.
To confirm the results obtained by macroscopic and microscopic observations, X-ray
diffraction (XRD) and X-ray fluorescence spectrometry (XRF) techniques are used. XRD
analyze the crystal structure of samples and identify the mineral phases present, while XRF
provides precise information on the chemical composition of rocks.
The results of these analyzes confirm the existence of a significant alteration of the volcanic
rocks at El Hamdania area. The primary minerals are altered, and new minerals are formed as
a result of the chemical reactions that occur. These alterations can have an impact on the
mechanical properties of the rocks and on their stability in a long-rang.
This study highlights the importance of understanding the alteration of magmatic rocks in the
El Hamdania region, particularly for the economic impact linked to the construction of a port.
The results obtained from the macroscopic, microscopic and analytical analyzes allow the
identification of the changes that occur in the weathered rocks, this study is of paramount
importance to guarantee the stability and durability of infrastructure of El Hamdania.