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The e
xte
nsi
on
al te
ctonic
s and
rela
ted
stru
cture
s of
the Y
em
en
’s M
eso
zoic
rift
basi
ns
1 GEOL 502-132- Term report
The extensional tectonics and related structures of the Yemen’s Mesozoic rift basins
Term paper presentation. Geol 502-132.
by:Abdullah Alqubalee
Earth Science Department.
May 11, 2014
The e
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stru
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2 GEOL 502-132- Term report
Objectives:
To demonstrate the tectonics events of the
Mesozoic rift basins.
To illustrate structural features of the
Mesozoic rift basins.
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3 GEOL 502-132- Term report
Outlines
Background. Location of Yemen. Sedimentary basins location.
Regional Tectonics. Mesozoic rift basins.
Basins development. Paleo-highs. Structural style. Sedimentary sequences. The Sab’atayn basin.
Conclusion. References.
The e
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4 GEOL 502-132- Term report
Location of Yemen
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5 GEOL 502-132- Term report
Yemen’s sedimentary basins
(As-Saruri et al., 2010 )
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6 GEOL 502-132- Term report
Regional Tectonic of Yemen
Basement :Formed during various periods of the Precambrian
consolidation of the Afro-Arabian cratons.
Mesozoic rift basins:Formed during various stages of Gondwana breakup.
Cenozoic rift basins:
Formed as a result of the separation of Arabia from
Africa by the opening of the Red Sea and the Gulf of
Aden.
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7 GEOL 502-132- Term report
Mesozoic rift basin development
Say’un-Masilah rift. Jiza’-Qamar basin.
Sab'atayn Basin.Say’un-Masilah basin.
(Redfern & Jones, 1995 .)
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8 GEOL 502-132- Term report
Mesozoic rift basins
Siham ad -Dhali Basin.Sab'atayn Basin.Balhaf Basin.
Say’un-Masilah basin. Jiza’-Qamar basin.
Oriented NW-SEfollowing the trend of the Precambrian Najd system.
Oriented progressively more east-west.
Younger
Older
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9 GEOL 502-132- Term report
Paleo-highs affected the Mesozoic basins
Mahfid basement separates the Siham-Ad-Dali’ and Sab’atayn basins,
Jabal Al-Aswad High is located between the Hajr sector of the Sab’atayn basin and Balhaf basin.
Jahi-Mukalla High divides the Sab’atayn and Say’un-Masilah basins
Fartaq High separates the Say’un-Masilah basins from Jiza-Qamar basin
control the distribution and thickness of sedimentary facies .
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10 GEOL 502-132- Term report
Mesozoic rift basins
(As-Saruri et al., 2010 )
Mahfid basement
Jabal Al-Aswad
Jahi-Mukalla
Fartaq
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11 GEOL 502-132- Term report
Structural style
(Bosence , 1997)
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12 GEOL 502-132- Term report
Sedimentary sequences
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13 GEOL 502-132- Term report
The Sab’atayn basin
•Southwestward dipping extensional fault and northeastward dipping and thickening syn- to post-rift sediments.•Thick skin deformation.•Meem(blue): Source, Alif (Orange): Reservoir , Safer (Red): Cap.•Structure features are shown in the seismic cross-section.
SW NE
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14 GEOL 502-132- Term report
Conclusion
Two major tectonic events formed the tectonic
evolution of Yemen.
Mesozoic rift > Breakup of Gondwana
when the Mesozoic rift basins were formed.
Cenozoic rift > The opening of Red Sea and Gulf of Aden.
when the Cenozoic rift basins were formed.
Regional cross-sections show thick skin deformation and reveal
some structures such as grabens, horsts, half grabens, listric
faults, & antithetic faults.
At this time the Say’un-Masilah and Sab’atayn basins are the
hydrocarbon producing basins in Yemen.
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15 GEOL 502-132- Term report
References Ahlbrandt, T. S. (2002). Madbi Amran/Qishn Total Petroleum System of the
MaʻRib-Al Jawf/Shabwah, and Masila-Jeza Basins, Yemen. US Department of the Interior, US Geological Survey.
Al-Matary, A. M., & Ahmed, H. M. (2012). Basin analysis study of block 10 in the Say'un- Masilah Basin, Yemen, using a 1D backstripping method. Arabian Journal of Geosciences, 5(3), 529-543.
As-Saruri M, Sorkhabi R, Baraba R (2010) Sedimentary basins of Yemen: their tectonic development and lithostratigraphic cover. Arab J Geosci 3(4):515–527.
doi: dx.doi.org/10.1007/s12517-010-0189-z Bosence, D. W. (1997). Mesozoic rift basins of Yemen. Marine and Petroleum
Geology, 14(6), 611-IN6. Csato, I. (2005). Extensional Tectonics and Salt Structures, Marib-Shabwa
Basin, Yemen. In AAPG Annual Convention, Dallas (pp. 1-6). Redfern, P., & Jones, J. A. (1995). The interior rifts of the Yemen-analysis of
basin structure and stratigraphy in a regional plate tectonic context. Basin Research, 7(4), 337-356.
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16 GEOL 502-132- Term report
Thank you for listening
Yemen- Jabal an-Nabi Shu'aib, 3670m
