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Register a new userDating and Correlating Some Syrian Basaltic Rocks by Using Some of Their Magnetic Properties
تأريخ بعض الصخور البازلتية و مضاهاتها في سورية باستخدام بعض خصائصها المغنطيسية
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جمال أبو ديب( باحث )
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درست المغنطيسية القديمة، وبعض الخصائص المغنطيسية و الفيزيائية (المتأثرية المغنطيسية، و شدة المغنطيسية الأولية، و الناقلية الكهربائية بالتيار المتناوب، و الكثافة)، لعدد كبير من عينات الصخور البازلتية من ثلاث مناطق مختلفة في سورية.
Palaeomagnetism and some magnetic and physical properties (magnetic susceptibility, intensity of remanent magnetisation, ac current electrical conductivity and density) of many basaltic samples were studied.
References used
إلياس، كمال ( ١٩٨٦ ).الخواص الجيولوجية وظروف تشكل التوضعات اللاتيريتية في منطقة جبل الحلو. أطروحة دكتوراه. جامعة باكو.
بلانكنهورن وكوبر ( ١٨٩١ ). الأطر التكتونية العامة للمنطقة الساحلية. تقرير منشور.
حاطوم، نزهت ( ١٩٩٢ ). بترولوجية وجيوكيميائية الحشوات الصخرية والصخور النارية الحاضنة لها في منطقة شين. أطروحة ماجستير. جامعة دمشق.
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Palaeomagnetism and some magnetic and physical properties such as
magnetic susceptibility, intensity of remanent magnetisation, ac current
electrical conductivity and density for the number order (٣٩ - ٥٤) of samples
from ٩ sites of Upper Pliocene
basaltic rocks from the area west of
Homs were studied. The aim of the works to extend the previous studies (Abou-
Deeb, ١٩٩٧a, b) to other regions so that these properties might be used as
characteristic factors in discriminating the basaltic flows.
The aim of this study is to use the measured values of the magnetic
susceptibility in the classification of the basaltic rocks and their different
differentiation degrees as an additional discrimination factor to the
geochemical analyses, which we
re applied on the basalts of southern and southeastern
Syria. So the magnetic susceptibility of ٢٠٤ specimens sampled from all
the ٧ basaltic groups in Qasr Shbeeka area in addition to ٦٢ specimens
sampled from three groups from outside the studied area were measured. This
led to the determination of all the magnetic susceptibility ranges, their mean
values and their standard deviation of the basaltic rocks in the area.
Some magnetic and physical properties ( magnetic susceptibility , intensity
of remanent magnetisation , ac current electrical conductivity and density ) of
١٨١ samples from ٣٠ sites of Middle Miocene basaltic rocks (β 1
N2) from Al-
Kisweh region
south of Damascus were studied, in order to extend the previous
study ( Abou-Deeb, ١٩٩٧) to other regions so that these properties might be
used as characteristic factors in discriminating the neighbouring basaltic flows
.The measurement of the in situ magnetic susceptibility of ٧٥ basaltic sites ,
distributed on ٨ localities , in the region helped to calculate the mean value of
the magnetic susceptibility of each locality and an overall mean value of the
whole region, which might be used in any magnetic interpretation of the
magnetic anomalies. Also, the density of ١٢٨ samples were measured and a
mean value of the density of each locality and an overall mean density were
calculated in order to be used in any future interpretation of any gravity
anomaly in the region .
Palaeomagnetism and some magnetic and physical properties (magnetic
susceptibility, intensity of the Natural Remnant Magnetization (NRM), ac
current electrical conductivity and density) of 136 samples from 22 sites of the
Yemen Volcanic Group TKY
(Tertiary and (or) Cretaceous) from igneous rock
exposures along the road from Sana’a – west towards Al-Hudyadah were
studied. A single population consists of seven Virtual Geomagnetic Poles
(VGP), of the Upper Oligocene, was accepted and a mean at 182.81° E, 77.44° N
with α95= 12.5° was calculated. The different properties were measured in
order to use these properties as characteristic factors to discriminate the
neighboring igneous flows. The measurement of the in situ magnetic
susceptibility of 140 points, distributed on 7 sub-areas, in the region helped to
calculate the mean value of the magnetic susceptibility of each sub-area, which
might be used in any magnetic interpretation of aeromagnetic or magnetic
anomalies. Also, the density of 132 samples were measured and a mean value of
the density of each sub-area was calculated in order to be used in any future
interpretation of any gravity anomaly in the area.
Density
Basalt
الكثافة
المتأثرية المغنطيسية
المغنطيسية المتبقية الأولية
مجموعة صخور اليمن الاندفاعية
Magnetic susceptibility
Palaeomagnetism
بازلت
الناقلية الكهربائية (بالتيار المتناوب)
اغنمبريت
طف ملتحم
بورفيريت أساسي
أغلوميريت
NRM = Natural Remnant Magnetization
ac current electrical conductivity
(Virtual Geomagnetic Poles (VGPs
ignembrite
welded tuffs
basic porphyrites
المزيد..
Palaeomagnetism and some magnetic and physical properties (magnetic
susceptibility, intensity of remanent magnetization, ac current electrical
conductivity and density) of 115 samples from 18 sites of the Yemen Volcanic
Group TKY (Tertiary and (or
) Cretaceous) from igneous rock exposures from
Sana’a region were studied. One palaeomagnetic pole position was determined
and a magneto-strigraphy of the area was suggested. The different properties
were measured in order to use them as characteristic factors in discriminating
the neighboring igneous flows. The measurement of the in situ magnetic
susceptibility of 80 points, distributed on 4 sub-areas, in the area helped to
calculate the mean value of the magnetic susceptibility of each sub-area, which
may be used in any magnetic interpretation of aeromagnetic or magnetic
anomalies. Also, the density of 115 samples were measured and a mean value of
the density of each sub-area and an overall mean density of each rock age, were
calculated in order to be used in any future interpretation of any gravity
anomaly in the area.
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