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Register a new userGeological study of basaltic rocks in Sheen Hill
دراسة جيولوجية للصخور البازلتية في هضبة شين
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رافع عقل محسن( باحث )
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تعالج هذه الدراسة الصخور البازلتية المنتشرة في هضبة شين البركانية حيث دلت الدراسة أن الاندفاعات البركانية هي انبثاقات لابية مصدرها بركنة شين – برشين انسكبت على شكل صبات بازلتية ذات ميول باتجاه الشرق يفصل بينها فواصل لاتيريتية, يعود منشأها إلى نهاية الميوسين الأعلى – البليوسين و هي ذات سماكات كبيرة قرب خط الانهدام تتجاوز / 800 / م.
This study deals with the basaltic rocks spread in Sheen Volcanic Hill. Where the studies have signified that these volcanic eruptions are an extrusive emergences, come from Sheen Barsheen Volcano, which Were poured as basaltic casts of declinations towards the east, separated by lateritic separations, date back in origin to the end of late Miocene- Pliocene of big thicknesses near the rifting line, over 800 m, thick.
References used
TUREKMANY, ABED ALSALAM. Petrologic of basaltic rocks and accessories rocks and minerals in volcanic region at side lefantic of Gab , Directorate of Geological Survey and Studies. General Est. Of Geology and Mineral Resources, DAMASCUS, 2006
HASSAN, ABD ALKAREEM. Geological Map of Gab ALGERAH SC 1/50000, Directorate of Geological Survey and Studies. General Est. Of Geology and Mineral Resources, DAMASCUS, 2005
SALOOM, ESSA. Geological Map of HOMS. SC 1/50000, Directorate of Geological Survey and Studies. General Est. Of Geology and Mineral Resources, DAMASCUS, 2005
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Field study of the basalt rocks indicate in Jaubet-AL Dilbe that casts basalt in the
field consist of tuffit, pyroclastic Sometimes consist of porphyric coarsebasalt with lava
structure and brescia of tufa ,which contain a lot of surrounding rocks
as lime stone and
dolomite. The basalt mass noting the presence of dykes in search area incisor squad
pyroclastic. The basalt color is light gray to dark gray. It is form the following
petrographical kinds: olivine basalt, olivine augite basalt, olivine plagioclase basalt,
plagioclase basalt. As for the lapilli consist of basalt (olivine basalt olivine vascular basalt
and plagioclase basalt)
Study of basaltic rocks in the Rastan region showed the presence of
many morphological and petrographic varieties compatible with
rocks of Alhesen castle region. Chemical analyses of studied rocks
proved to be alkaline rocks with sodic-potassic na
ture. Rotten parts
of studied rocks considered an important source of civilian
installations, paving roads, and as materials for manufacture of
cement, in addition to their academic importance in Petrological,
paleogeographic, and tectonic studies.
This paper Presents a Petrographic and geologic study of basaltic
rocks in( Hrbet AL-Sindian). which is part of the Diaeremes to the
plosirelacune Qardah district .In study, We identify the type of
Cretaceous and Neogene basalt rock in the studied
area.
This search shows the lithological, petrographical and physical properties of the dam,
and storage basin through rocks cors study taken from some wells in axis dam and storage
lake and surface samples therefore have shaped unpenetration and penetra
tion units. From
this study discern reduction degree pored with rise positions deep far from range
movement underground water and observed attachment pored grade cracs, Faults and
karstic, Karstic discerned in positions (campanian, turounian) Increase Karstic caves in
sinomanian positions from during tectonic cracs and naught being it in mastrichtian also
action space in area dry weathering above level underground water because movement
water across this cracs and vacuity.
Positions geological divided in location which credence at pored to three straps
(A, B, C):
A)-Hard weathering strap Positions assimilate in this strap cracs dense rocks advance
open cracs wobble between(3-5mm) and full of habit clay materials ,and compose dense
weathering strap assimilate pored rocks and area the thick (3-6m).and advance removal it
before starting in construction dam body because low resistance ,high cracs, capacity low
load
B) -Soft weathering strap Assimilate debris pile from split calcite rocks,and
compose penetrating rocks.
C) -Unpenetrating rocks strip Assimilate thick clay calcite positions from
unpenetrating rocks.
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.
Syria
سورية
Density
حُمّص
الكثافة
المتأثرية المغنطيسية
المغنطيسية المتبقية الأولية
Magnetic susceptibility
Magnetostratigraphy
Homs
ac current electrical conductivity
الناقلية الكهربائية بالتيار المتناوب
الستراتغرافيا المغنطيسية
زمن القطبية
كسوة
سويداء
NRM= Natural Remanent Magnetisation
polarity chron
Kisweh
Swedah
المزيد..
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