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The Sahlabad province was characterized
by deep resedimented deposits, radiolarian
chert and shallow water marine sediments
containing benthic foraminifera. The foraminiferal
assemblage containing orthophragminids,
small Nummulites, rotaliids such
as Lockhartia conditi (Nuttall), Lockhartia
haimei (Davies), Cuvillierina vallensis (Ruiz
de Gaona), alveolinids and miliolids was
dominantly deposited in shallow/protected
subtidal to deeper/open subtidal. The microfacies
analysis of carbonate rocks were carried
out with respect to the distribution of depositional
components and biota. Two main faunal
assemblages are determined : Miliolinadominated
assemblage (composed Opertorbitolites,
Alveolina and miliolids) and orthophragminid-dominated
assemblage (characterized
by Discocyclina, Assilina and Asterocyclina).
The ophiolitic mélanges which derived
from the subduction zone in this province
are covered by the Early Eocene transgressive
conglomerates.
2010010583
全 球 古 近 纪 - 新 近 纪 全 球 层 型 剖 面 和 点
位 ,Dababiya 采 石 场 剖 面 的 有 孔 虫 指
标 = Foraminiferal criteria for the Dababiya
Quarry Beds, the Paleocene/Eocene
Global Stratotype Sections
and Point. ( 英 文 ). Galal G. Revue de
Paleobiologie, 2008, 27(2): 475-510
One hundred eighty-one foraminiferal species
(58 planktic & 123 benthic) were identified
across the Dababiya Quarry Beds (DQBs
1- 5, about 3.75 m thick) at the Paleocene/Eocene
Global Stratotype Sections and
Point (the Dababiya Quarry Section, Dababiya,
Luxor, Egypt). The identified planktic species
(5 serial & 53 spiral, recorded only within the
size fractions 63-375 μm) are related to 10
genera (2 serial & 8 spiral : 7 trochospiral & 1
planispiral), which are classified into 7 families,
3 superfamilies and one suborder. Meanwhile,
the identified benthic species (31 agglutinated
& 92 calcareous : 2 porcellaneous &
90 hyaline) are related to 63 genera, 42 families,
23 superfamilies and 6 suborders, which
are found only within the size fractions 63-500
μm. Thirteen distinctive biostratigraphic intervals
(from Pre-DQBa to Post-DQB) were recognized
within the Dababiya Quarry succession,
on the basis of variation in foraminiferal
frequency and species number. This necessitates
the differentiation of the residue of each
of the studied samples into five size fractions.
Various frequencies of each of the recorded
taxonomic groups were traced along the studied
succession within different size fraction
reflecting the importance of individual faunal
size in further refinement of the studied stratotype.
2010010584
伊 洛 瓦 底 江 流 入 印 度 洋 的 河 流 沉 积 通
量 : 对 19 世 纪 原 数 据 的 再 研 究 = The
Irrawaddy River sediment flux to the
Indian Ocean: The original nineteenthcentury
data revisited. ( 英 文 ). Robinson
R A J; Bird M I; Oo N W; Hoey T B;
Aye M M; Higgitt D L; Lu X X; Swe A;
Tun T; Win S L. Journal of Geology,
2007, 115(6): 629-640
The Irrawaddy (Ayeyarwady) River
of Myanmar is ranked as having the
fifth-largest suspended load and the
fourth-highest total dissolved load of the
world's rivers, and the combined Irrawaddy
and Salween (Thanlwin) system
is regarded as contributing 20% of
the total flux of material from the Himalayan-Tibetan
orogen. The estimates for
the Irrawaddy are taken from published
quotations of a nineteenth-century data
set, and there are no available published
data for the Myanmar reaches of the
Salween. Apart from our own field studies
in 2005 and 2006, no recent research
documenting the sediment load of these
important large rivers has been conducted,
although their contribution to
biogeochemical cycles and ocean geochemistry
is clearly significant. We present
a reanalysis of the Irrawaddy data
from the original 550-page report of
Gordon covering 10 yr of discharge
( 1869-1879) and 1 yr of sediment concentration
measurements ( 1877-1878).
We describe Gordon's methodologies,
evaluate his measurements and calculations
and the adjustments he made to his
data set, and present our revised interpretation
of nineteenth-century discharge
and sediment load with an estimate
of uncertainty. The 10-yr average
of annual suspended sediment load cur-
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