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'THE GEOLOGY AND MINERAL RESOURCES OF DHUFAR PROVINCE, MUSCAT AND OMAN' [‎46r] (81/96)

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The record is made up of 1 item (47 folios). It was created in 1947. It was written in English. The original is part of the British Library: India Office The department of the British Government to which the Government of India reported between 1858 and 1947. The successor to the Court of Directors. Records and Private Papers Documents collected in a private capacity. .

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^0
65
arenaceous strata next below the Limestones of Jabal Qara, are at
least 2,000 feet thick and may be somewhat greater. They were
indicated as possible ‘source rocks’ but they might be higher in the
sequence, and the true source rocks may be lower and not seen. In
which case this areno-argillaceous series might be ‘cover rocks’.
It is only near disturbed strata, the exposure at the head of the
wadi A seasonal or intermittent watercourse, or the valley in which it flows. Ghaiz and the ‘spot’' on the shore of Murbat bay, both of
which I examined personally, that evidence, which might be indica
tive of oil, has been found in Dhufar. My opinion is that there are
potentialities of oil in Dhufar, notwithstanding the disappointing
evidence so far obtained from surface exposures.
100. If there are ‘source rocks’ in Dhufar, they are not seen,
although the buried strata of the areno-argillaceous series might be
source rocks. If the source rocks are concealed, then the arenaceous
beds of the Samhan hill series (as indicated in paragraphs 72 and 73)
might be ‘ reservoir rocks ’ and the argillaceous portion of this senes
would function as cover rocks. These are all matters which must
remain conjectural until proof is obtained by boring. Personally,
I am of the opinion, that the source rocks are not exposed anywhere
in Dhufar, and that both the Samhan hill series may be ‘reservoir
and ‘cover rocks’ in combination, and these under the anticlinal
portion of the Qara mountains will be at a depth of between 3,000
and 4,000 feet. This then is the minimum depth to which an explo
ratory boring might be drilled at, say, the vicinity of Othik on t e
one hand or along an east-west axial line about this position. Inere
always remains a possibility that the basal beds of the Limestone
series, with the lithographic A lithograph is an image reproduced from a printing plate whose image areas attract ink and non-image areas repel it. type of Limestone which is often mucfi
fractured, may be found to carry oil and so be the reservoir rock m
Dhufar, and that the ‘cover rocks’ are the middle Locene beds.
This is again pure conjecture, but it is my opinion that the strati-
graphical and structural geology of Dhufar have some evidence or
the belief in a local accumulation of oil. If exploratory borings in
the Zeloi field were carried to depths °f 10.9 0 . 0 fe f t dlS c nnofo^t
and found the strata waterlogged, then I think a 4,000 to 5 . 000 -foot
boring in Dhufar well worth consideration on an anticlinal positio
(which must be more precisely determined by geological mapping).
Other Mineral Industries
101 I have considered the subject of Portland Cement manufac
ture and that of Soda Ash. In the former case a relatively impu re >
though still high grade, Limestone, the Miliolitic woul e
suitable; and in the latter case the high grade
of Rizat springs (but there may be as good matena! near Risut and
tests should be made to estabhsh this ^^^
industries the basic raw material is Limestone. The pure lime that

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This booklet contains a comprehensive geological report compiled by Sir Cyril Sankey Fox for the Omani Government in 1947. The booklet is the first general mineral audit of the southern reaches of Oman, near its border with Yemen, along with a detailed description of the geography. The mineral audit includes descriptions of potential oil deposits. The booklet also contains a map of the Dhufar coast.

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1 item (47 folios)
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English in Latin script
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'THE GEOLOGY AND MINERAL RESOURCES OF DHUFAR PROVINCE, MUSCAT AND OMAN' [‎46r] (81/96), British Library: India Office Records and Private Papers, IOR/L/PS/12/1422, ff 6-53, in Qatar Digital Library <https://www.qdl.qa/archive/81055/vdc_100058140641.0x00005d> [accessed 4 March 2024]

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