'THE GEOLOGY AND MINERAL RESOURCES OF DHUFAR PROVINCE, MUSCAT AND OMAN' [‎31v] (52/96)

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(2) and (3) Echinoids from about half-way down the sides of
Hanun wadi A seasonal or intermittent watercourse, or the valley in which it flows. , and recognized as belonging to the genus
Echinolampas , similar to specimens from the Kirthar
of Kathiawar, Cutch and Sind—middle to upper
Lutetian (middle Eocene) ; _ ^
(4) Ostrea, closely related to 0. turkestanensis of E. R. Cox,
middle Eocene of Persia and Arabia, collected at the
same horizon and place as (2) and (3) above,
(5) (61 and (7) contain Scutellaria ci. nummulana recorded by
Cossman and Pissaro from the Lutetian (middle-lower
Eocene) of the Paris Basin. These specimens come
from the Hanun wadi A seasonal or intermittent watercourse, or the valley in which it flows. and about the same horizon as
(2) to (4) above ;
( 8 ) and ( 9 ) contain specimens of Lucina, Diplodonta and
Natica. The Lucina is closely related to, if not identical
with L. vawensis of Cotter from the uppermost Eocene
(Yaw stage) of Burma. Both lots of specimens come
from a similar horizon and well above that of the
Hanun wadi A seasonal or intermittent watercourse, or the valley in which it flows. ((2) to (7) ). Some of the specimens are
from the limestones between Kazmeem, but nearer
Ayun, and the others are from the cliffs above Obet
(Lay ’ath) on the way up to Nissa (Na Sat), roughly
70. It may appear from the previous paragraphs of this section
that I have laboured the subject of correlation, but this has been
necessary from the economic point of view (of the prospects for oil
and coal) since the stratigraphical data are so uncertain. However,
from the information in my possession the following succession of the
rocks of the Dhufar province in the Sultanate of Oman may be
tentatively recognized:—
12. Recent alluvium, Sand dunes and Tufa deposits.
11. River terraces and conglomerates of W. Ghaiz.
10. Miliolitic limestone of Dhufar coast (Murbat to Risut).
9. Qara (A1 Qutun) limestones (between Na Sat and Obet).
8 . Qam Shaiba limestones (Hanun, Thenut, Ha’rat).
7. Risut limestones (up the wadi A seasonal or intermittent watercourse, or the valley in which it flows. Nagar Ghaiz).
6 . Samhan hills limestone (with that east of Takah).
5. Argillaceous beds (300 feet) Jabal Samhan scarp.
4. Micaceous sandstones (1,700 feet).
3. Murbat bay sandstones north of Murbat.
2. Jabal Ali metamorphic rocks (Murbat).
1 . Crystalline gneisses of Murbat peneplain.
These successive formations are dealt with in the following
paragraphs from the oldest ( 1 ) to the youngest ( 12 ).