The Gulf of Aqaba

Hottinger, Lukas; Reiss, Zeev

doi:10.1007/978-3-642-69787-6

Cited by 307 publications

(86 citation statements)

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“…Sphaerogypsina globulus is generally common in Oligocene and Miocene shallow-water sediments (Nebelsick et al 2001). The dominating genus Amphistegina in the sediments studied, is a typical representative of tropical (Reiss and Hottinger 1984) to warm-temperate modern environments (Betzler et al 1997).…”

Section: Assemblages Of Oligo-miocene Foraminifers As Paleoenvironmenmentioning

confidence: 99%

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Depositional environment and sequence stratigraphy of the Oligo-Miocene Asmari Formation in SW Iran

Vaziri‐Moghaddam

Kimiagari

Taheri

2005

Facies

129

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The Asmari Formation, a thick carbonate succession of the Oligo-Miocene in Zagros Mountains (southwest Iran), has been studied to determine its microfacies, paleoenvironments and sedimentary sequences. Detailed petrographic analysis of the deposits led to the recognition of 10 microfacies types. In addition, five major depositional environments were identified in the Asmari Formation. These include tidal flat, shelf lagoon, shoal, slope and basin environmental settings and are interpreted as a carbonate platform developed in an open shelf situation but without effective barriers separating the platform from the open ocean. The Asmari carbonate succession consists of four, thick shallowing-upward sequences (third-order cycles). No major hiatuses were recognized between these cycles. Therefore, the contacts are interpreted as SB2 sequence boundary types. The Pabdeh Formation, the deeper marine facies equivalent of the Asmari Limestone is interpreted to be deposited in an outer slope-basin environment. The microfacies of the Pabdeh Formation shows similarities to the Asmari Formation.

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Section: Assemblages Of Oligo-miocene Foraminifers As Paleoenvironmenmentioning

confidence: 99%

“…Operculina lives on soft sediments whereas Heterostegina prefers firm substrates (Reiss and Hottinger 1984;Hohenegger et al 1999). Large and flat Lepidocyclina are indicative for normal marine salinity conditions.…”

Section: Assemblages Of Oligo-miocene Foraminifers As Paleoenvironmenmentioning

confidence: 99%

Depositional environment and sequence stratigraphy of the Oligo-Miocene Asmari Formation in SW Iran

Vaziri‐Moghaddam

Kimiagari

Taheri

2005

Facies

129

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“…The maximum depth of the gulf is 1830 m; it is 180 km long and 5-26 km wide. Oligotrophic conditions prevail in the gulf waters and evaporation (350 cm y −1 ) greatly exceeds precipitation (3 cm y −1 ) (Reiss and Hottinger, 1984). Surface sediment samples were collected by SCUBA divers from the upper layer of the sediment (0-2 cm) using cylindrical plastic tubes for the surface samples and using the cores for the core samples (0-17 cm) , after drying; samples were sieved through 63um sieve and preserved in the freezer until analysis.…”

Section: Methodsmentioning

confidence: 99%

The Correlations Between Mercury Speciation and Dissolved Organic Matter in the Sediment of the Red Sea

Wedyan

Ababneh

Al-Rousan

2012

American Journal of Environmental Sciences

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This study addresses the correlations between Hg and organic matter in recent sediment; samples were collected from the Gulf of Aqaba, Red Sea coasts (oligotrophic regions) during 2010. In the present study TOC analyzer was used to determine Total Organic Carbon (TOC) and Total Nitrogen (TN) concentrations and the total amount of mercury (Hg T ) in sediment samples were analyzed by Hydra-C mercury analyzer. The obtained results indicated that, mercury, TOC and TN average concentrations in the Red Sea were 85.42 ng g −1 , 5.10 and 4.45 mg L −1 , respectively. The results show that the Total Organic Carbon (TOC) in sediment represents the sum of various organic compounds, which may play a completely different role in the distribution and accumulation of Hg. slightly correlations between the TOC and the concentration of Hg in the studied sediment arise mainly from the labile portion of organic matter released. These compounds primarily consist of easily degradable algal-derived lipids and various pigments, which are petrographically described as a soluble Organic Matter (OM). The preserved OM in sediment is commonly entrapped within the cell walls of phytoplankton and also appears as a surface coating on sediment particles. The strong affinity between Hg and OM is due not only to its chemical reactivity, but also to the physical characteristic of these labile compounds, which plays the most important role in the distribution of Hg in sediment.

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“…Hottinger (1982) sustained the slow growth assumed for larger foraminifera linked to K-strategy with the deceleration in growth rate represented by the type of growth consisting of alternating chamberlets in 2 and 3 dimensions seen in Gypsina and Planorbulina. This pattern of growth would minimize the amount of new protoplasmic volume for a new chamber in order to keep growth rates as linear as possible during growth of large-sized shells (Reiss and Hottinger, 1984). In fact, these foraminifera do not have algal symbionts and are not considered larger foraminifera.…”

Section: Ecological Implicationsmentioning

confidence: 99%

Multispiral growth in Nummulites

Ferràndez-Cañadell¹

2012

Marine Micropaleontology

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The Gulf of Aqaba

Cited by 307 publications

References 0 publications

Depositional environment and sequence stratigraphy of the Oligo-Miocene Asmari Formation in SW Iran

Depositional environment and sequence stratigraphy of the Oligo-Miocene Asmari Formation in SW Iran

The Correlations Between Mercury Speciation and Dissolved Organic Matter in the Sediment of the Red Sea

Multispiral growth in Nummulites

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