The Experts below are selected from a list of 126 Experts worldwide ranked by ideXlab platform
Gabriel Weinberger - One of the best experts on this subject based on the ideXlab platform.
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natural tracers in Senonian eocene formations for detecting interconnection between aquifers
Applied Geochemistry, 2014Co-Authors: Michael Zilberbrand, Eliyahu Rosenthal, Gabriel WeinbergerAbstract:Abstract Relatively high concentrations of dissolved bio-Barium and bio-silica in groundwater in Paleocene–Eocene carbonate aquifers caused by the Paleocene–Eocene thermal maximum are proposed as tracers for delineating zones of leakage into adjacent aquifers. In fresh, oxidized and not thermal groundwater (within a narrow range of temperatures) these tracers can be considered as conservative. In addition, certain trace elements (U, Mo, Se and Tl) of phosphates widespread in Senonian carbonate strata are suggested to serve as tracers of water originating from these sediments. The locally increased concentrations of these trace elements in groundwater of a carbonate aquifer underlying the Senonian strata were also proposed as tracers of water leakage from above. The proposed tracers of water in Eocene and Senonian strata have been used for delineating zones of local leakage into the underlying Turonian aquifer in the Yarkon-Taninim basin (YTB) of Israel. Results of geochemical survey of 208 wells in the Turonian aquifer of the YTB were used for Pearson’s correlation and Principal Component Analysis (PCA) for detection of interconnection zones. PCA revealed 4 factors explaining up to 86% of variance in groundwater chemistry in the Turonian carbonate aquifer. Two factors, first – with high loadings of Ba and SiO 2 , and second – with high loadings of U, Mo, Se and Tl, were interpreted to be related to local groundwater leakage from Eocene strata into the Turonian aquifer, fast and slow, respectively. Mapping of these two factors enabled delineation of areas where local inflow of water from the Eocene aquitard exists.
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Natural tracers in Senonian–Eocene formations for detecting interconnection between aquifers
Applied Geochemistry, 2014Co-Authors: Michael Zilberbrand, Eliyahu Rosenthal, Gabriel WeinbergerAbstract:Abstract Relatively high concentrations of dissolved bio-Barium and bio-silica in groundwater in Paleocene–Eocene carbonate aquifers caused by the Paleocene–Eocene thermal maximum are proposed as tracers for delineating zones of leakage into adjacent aquifers. In fresh, oxidized and not thermal groundwater (within a narrow range of temperatures) these tracers can be considered as conservative. In addition, certain trace elements (U, Mo, Se and Tl) of phosphates widespread in Senonian carbonate strata are suggested to serve as tracers of water originating from these sediments. The locally increased concentrations of these trace elements in groundwater of a carbonate aquifer underlying the Senonian strata were also proposed as tracers of water leakage from above. The proposed tracers of water in Eocene and Senonian strata have been used for delineating zones of local leakage into the underlying Turonian aquifer in the Yarkon-Taninim basin (YTB) of Israel. Results of geochemical survey of 208 wells in the Turonian aquifer of the YTB were used for Pearson’s correlation and Principal Component Analysis (PCA) for detection of interconnection zones. PCA revealed 4 factors explaining up to 86% of variance in groundwater chemistry in the Turonian carbonate aquifer. Two factors, first – with high loadings of Ba and SiO 2 , and second – with high loadings of U, Mo, Se and Tl, were interpreted to be related to local groundwater leakage from Eocene strata into the Turonian aquifer, fast and slow, respectively. Mapping of these two factors enabled delineation of areas where local inflow of water from the Eocene aquitard exists.
Ágnes Siegl-farkas - One of the best experts on this subject based on the ideXlab platform.
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Palynostratigraphy of the Upper Cretaceous in Hungary
Cretaceous Research, 1993Co-Authors: Ágnes Siegl-farkasAbstract:Abstract Within the territory of Hungary four sedimentologically different sequences can be distinguished in the Senonian: the Transdanubian Central Range, the 'Gosau', the flysch and the southern Great Hungarian Plain. The most continuous Central Range sedimentary succession can be referred, on the basis of palynology, to the Upper Sanionian-Upper Maastrichtian, while the deposits of "Gosau-type" are Campanian, and the Bacsalmâs horizons in the southern part of the Great Hungarian Plain can be considered Upper Campanian-Maastrichtian. The geographically remote Pelso and Tisza units belonged to the same, so-called Normapolles Phytogeographic Province during the Late Cretaceous. Senonian sedimentation started in both areas at about the same time. Palynostratigraphic analyses have been carried out on sections within both units. Eight zones, and within them eight subzones, have been differentiated.
V. Carlotto - One of the best experts on this subject based on the ideXlab platform.
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Senonian-Paleocene charophyte succession of the Peruvian Andes
Cretaceous Research, 1994Co-Authors: Etienne Jaillard, Monique Feist, N. Grambast-fessard, V. CarlottoAbstract:A synthesis of the available sedimentological and stratigraphic data on the Late Cretaceous and Paleocene deposits of the peruvian Andes permits determination of the age-range of the succession and stratigraphic range of the main charophyte species. Feistiella ovalis may appear in the late Santonian(?). It persists up to the middle(?) Campanian, where it is associated with Platychara perlata, which still occurs in the late Campanian. Feistiella gildemeisteri and Platychara grambastii are commonly found in association with Amblyochara peruviana. In other parts of Peru, these species occur together with Amblyochara rolli, A. begudiana, Feistiella costata and Saportanella aff. maslovi, strongly supporting a pre-Tertiary, mainly Maastrichtian age. Early Paleocene species are only local and poorly known. The Nitellopsis supraplana-Maedleriella association seems to characterize a late time-span of the Paleocene, though a possible extension into the Eocene cannot be ruled out.
Michael Zilberbrand - One of the best experts on this subject based on the ideXlab platform.
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natural tracers in Senonian eocene formations for detecting interconnection between aquifers
Applied Geochemistry, 2014Co-Authors: Michael Zilberbrand, Eliyahu Rosenthal, Gabriel WeinbergerAbstract:Abstract Relatively high concentrations of dissolved bio-Barium and bio-silica in groundwater in Paleocene–Eocene carbonate aquifers caused by the Paleocene–Eocene thermal maximum are proposed as tracers for delineating zones of leakage into adjacent aquifers. In fresh, oxidized and not thermal groundwater (within a narrow range of temperatures) these tracers can be considered as conservative. In addition, certain trace elements (U, Mo, Se and Tl) of phosphates widespread in Senonian carbonate strata are suggested to serve as tracers of water originating from these sediments. The locally increased concentrations of these trace elements in groundwater of a carbonate aquifer underlying the Senonian strata were also proposed as tracers of water leakage from above. The proposed tracers of water in Eocene and Senonian strata have been used for delineating zones of local leakage into the underlying Turonian aquifer in the Yarkon-Taninim basin (YTB) of Israel. Results of geochemical survey of 208 wells in the Turonian aquifer of the YTB were used for Pearson’s correlation and Principal Component Analysis (PCA) for detection of interconnection zones. PCA revealed 4 factors explaining up to 86% of variance in groundwater chemistry in the Turonian carbonate aquifer. Two factors, first – with high loadings of Ba and SiO 2 , and second – with high loadings of U, Mo, Se and Tl, were interpreted to be related to local groundwater leakage from Eocene strata into the Turonian aquifer, fast and slow, respectively. Mapping of these two factors enabled delineation of areas where local inflow of water from the Eocene aquitard exists.
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Natural tracers in Senonian–Eocene formations for detecting interconnection between aquifers
Applied Geochemistry, 2014Co-Authors: Michael Zilberbrand, Eliyahu Rosenthal, Gabriel WeinbergerAbstract:Abstract Relatively high concentrations of dissolved bio-Barium and bio-silica in groundwater in Paleocene–Eocene carbonate aquifers caused by the Paleocene–Eocene thermal maximum are proposed as tracers for delineating zones of leakage into adjacent aquifers. In fresh, oxidized and not thermal groundwater (within a narrow range of temperatures) these tracers can be considered as conservative. In addition, certain trace elements (U, Mo, Se and Tl) of phosphates widespread in Senonian carbonate strata are suggested to serve as tracers of water originating from these sediments. The locally increased concentrations of these trace elements in groundwater of a carbonate aquifer underlying the Senonian strata were also proposed as tracers of water leakage from above. The proposed tracers of water in Eocene and Senonian strata have been used for delineating zones of local leakage into the underlying Turonian aquifer in the Yarkon-Taninim basin (YTB) of Israel. Results of geochemical survey of 208 wells in the Turonian aquifer of the YTB were used for Pearson’s correlation and Principal Component Analysis (PCA) for detection of interconnection zones. PCA revealed 4 factors explaining up to 86% of variance in groundwater chemistry in the Turonian carbonate aquifer. Two factors, first – with high loadings of Ba and SiO 2 , and second – with high loadings of U, Mo, Se and Tl, were interpreted to be related to local groundwater leakage from Eocene strata into the Turonian aquifer, fast and slow, respectively. Mapping of these two factors enabled delineation of areas where local inflow of water from the Eocene aquitard exists.
Yossi Mart - One of the best experts on this subject based on the ideXlab platform.
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Ptolemaïs basin: The tectonic origin of a Senonian marine basin underneath the southeastern Mediterranean Sea
Tectonophysics, 1994Co-Authors: Yossi MartAbstract:Abstract The large Litani anticline, that was recently discovered in the SE Mediterranean basin, sheds new light on the regional tectonic history of the Levant in the late Cretaceous. The anticline is buried under 5 km of undeformed sedimentary series, its apex was leveled by erosion, and its folding can be dated to the early Senonian. The seismic reflection data suggest that shortly after the structural development of the anticline in a shallow marine environment and under compressional stresses, the regional tectonic regime turned extensional, and the anticline subsided into the open marine environment of Ptolemais basin. That subsidence can be dated to the Senonian as well. It is suggested that the Litani anticline is a part of the Syrian Arc, and its deformation and subsequence subsidence reflect the complex tectonic regime of southern Anatolia, where the continental collision with Arabia and the subduction of the Neo-Tethys oceanic crust took place concurrently. The Litani anticline and the Ptolemais basin thus show that contrasting tectonic regimes and their structural derivatives could evolve at a very fast rate.
