Sabkhas

Butler, G.P., 1969, Modem evaporite deposition and geochemistry of coexisting brines, the sabkha, Trucial Coast, Arabian Gulf. Journal of Sedimentary Petrology 39,70-89. 

Table 17.1 Documented Modern Sea-Margin Evaporites. Sabkha...

Sabkhat also form inland, where river input and saline groundwater seeps contribute salt and water, forming an evaporitic pan. As illustrated in Figure 17.6, these continental sabkhat are fer more isolated from the ocean than a marine sabkha. They also contain far less biogenic detritus. 

Sabkha Intertidal mudflats in which modern-day evaporites form. Most are located in the Middle East, the northwestern coast of Australia and lagoons along the coast of Texas. 

Figure 3. Schematic section through the intertidal zone and the sabkha, showing the position of organic matter precursors and their location in the sabkha after burial. The theoretical position of this section is displayed on fig.2.

Buried mat samples were collected from the sabkha, in pits or along artificial channels. They were selected to correspond to the modem mat samples in terms of depositional environments. The buried mat sample used for detailed geochemical studies has been collected from the sabkha two kilometers inland at a depth of 60 cm. Its sedimentary structure is well preserved and it contains 2% TOC. 

Mangrove soils. The sample of mangrove paleosoils used for extraction and pyrolysis was collected, from the sabkha, one kilometers inland at a depth of 50 cm. It corresponds to the upper part of the soil (30 cm thick), made from the accumulation of leaves and roots. The TOC of this sample is 8.2 %. Selective diagenesis of organic tissues observed in thin sections of the soil leads to a relative... 

The distribution of n-alkanes, isoprenoids and other branched hydrocarbons in the saturated/unsaturated hydrocarbons fraction of the modem microbial mat ranges mostly between C14 and C21, in extracts and pyrolysates (Figure 5A and 6C). It is similar to the distribution of the hydrocarbons described in the "top mat" of the Gavish sabkha in Israel (17). The main differences are the presence, in the extract of... 

Muir M. D. (1979) A sabkha model for deposition of part of the Proterozoic McArthur Group of the Northern Territory, and implications for mineralization. BMR J. Austral. Geol. Geophys. 4, 149-162. 

Briere, P.R. (2000) Playa, playa lake, sabkha Proposed definitions for old terms. Journal of Arid Environments 45, 1-7. 

Evans, G., Schmidt, V., Bush, P. Nelson, H. (1969) Stratigraphy and geologic history of the sabkha, Abu Dhabi, Persian Gulf. SecUmentology 12, 145-159. 

Handford, C.R. (1982) Sedimentology and evaporite genesis in a Holocene continental sabkha playa basin - Bristol Dry Lake, California. Sedimentology 29, 239-253. 

Wood, W.W., Sanford, W.E. A1 Habshi, A.R.S. (2002) Source of solutes to the coastal sabkha of Abu Dhabi. Geological Society of America, Bulletin 114, 259-268. 

Yechieli, Y. Wood, W.W. (2002) Hydrogeological processes in playas, sabkhas, and saline lakes. Earth-Science Reviews 58, 343-365. 

Samples from several locations have been analyzed (e.g. the Namibian Shelf (S.W,-Africa), the Black Sea, Solar Lake (N. Sinai) and the Gavish Sabkha (S. Sinai)). 

Gavish Sabkha very recent South Sinai... 

---