A seismic interpretation of the Bet She'an basin

Meiler, Miki; Shulman, Haim; Flexer, A.; Reshef, Moshe; Yellin-Dror, Anat

doi:10.1560/ijes.57.1.1

Cited by 13 publications

(4 citation statements)

References 7 publications

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“…There are no direct geological data from the central parts of the Valley. Gardosh and Brunner and Meiler et al [5,9] narrowed this information gap. They established the first subsurface structural model of the area based on the interpretation of seismic data.…”

Section: Materials and Methodologymentioning

confidence: 99%

“…Within the study area, two major structures influence the tectonic development of the region: the Syrian Arc System (SAS) to which the Fari'a-Beqaot structure belongs and the DST strike-slip fault along which the convergence of Africa and Eurasia takes place. The coexistence of SAS and DST shapes the eastern part of the Levant basin and its margins to the east [9,11,[13][14][15][16][17]. The superposition of SAS and DST caused an abrupt change of the regional tectonic regime since the Miocene.…”

Section: Geological and Hydrogeological Settingmentioning

confidence: 99%

“…Based on geophysical evidence, borehole MJ1 was located on the northern plunge of the Fari'a-Beqaot anticline buried beneath the fill of the Bet She'an Valley (Figure 1). In the subsurface, the borehole is located near the intersection of longitudinal faults outlining the western rim of the Rift and faults branching archwise northwestwards out from the Rift system creating the Gilboa fault [9].…”

Section: The Exploratory Borehole Mj1mentioning

confidence: 99%

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The Hydrogeochemical Stratigraphy of Brines and Its Implications on Water Management in the Central Jordan-Dead Sea Rift Valley, Israel

et al. 2020

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The exploratory borehole Megiddo-Jezre’el 1 (MJ1) was drilled in Israel, in the Bet She’an Valley which branches out from the Central Jordan Rift. It reached the depth of 5060 m and bottomed within the Upper Triassic Mohilla Fm. Following the increase of groundwater exploitation, the Cl- concentrations increased and ionic ratios changed indicating inflow of Ca2+-Cl- brines, the origins of which were hitherto unknown. Data from the new MJ1 borehole revealed that rock porosities decrease with depth. Lowermost values of about 3% were interpreted from logs in Lower Jurassic and Triassic strata. The highest shut-in pressures were measured in the Upper Jurassic sequence raising the water much higher than the ground surface. Along the drilled section, there is a continuous downward increase in Cl- concentrations in the range of 12-186 g Cl-/l and a very clear stratification of brines. Data from the MJ1 borehole and from other exploration wells indicate that in the subsurface of the area, there are two definite source brines: Triassic brine and the Late Tertiary (so-called) Rift brine. Brines encountered in Jurassic and Cretaceous beds represent ancient mixtures of the two source brines involving various water-rock chemical transformations. Evidence of very high pressures in deep boreholes Devora 2A, Rosh Pinna 1, and MJ1 revealed the existence of a mechanism in which the deep brines are “piston-driven” upwards and possibly also laterally. The ongoing salinization of groundwater in the area is due to the inflow of the Late Tertiary Ca2+-Cl- Rift brines and not that of the Jurassic or Triassic brines. The hydrogeological and hydrochemical data from borehole MJ1 is of major importance for the management of groundwater resources in the Central Jordan Rift Valley and in the adjacent geologically connected areas.

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Section: Materials and Methodologymentioning

confidence: 99%

Section: Geological and Hydrogeological Settingmentioning

confidence: 99%

Section: The Exploratory Borehole Mj1mentioning

confidence: 99%

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The Hydrogeochemical Stratigraphy of Brines and Its Implications on Water Management in the Central Jordan-Dead Sea Rift Valley, Israel

et al. 2020

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“…Some of the studies focused on volcanism, paleo-drainage, and paleohydrology of the Yizre'el basin (Yair, 1968;Schulman, 1962;Wishkin, 1973;Shaliv, 1991;Gev, 1989;Baer et al, 2006). Geophysical studies showed the architecture of basins along the southern Galilee: Bet Shean basin (Meiler et al, 2008;Gardosh and Bruner, 1998;B7 in Fig. 3); Zevulun basin (Sagy and Gvirtzman, 2009;B1 in Fig.…”

Section: Morpho-tectonics Of the Southern Galilee Basinsmentioning

confidence: 99%

Structural expression of a fading rift front, a case study from the Oligo-Miocene Irbid rift of northwest Arabia

Wald¹,

Segev²,

Ben‐Avraham³

et al. 2018

Preprint

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Abstract. Not all continental rifts mature to form a young ocean. The mechanism and duration of their cessation depend on the crustal structure, modifications in plate kinematics, lithospheric thermal response, or intensity of sub-crustal flow (e.g., plume activity). The cessation is recorded in the structure and stratigraphy of the basins that develop during the rifting process. This architecture is lost due to younger tectonic inversion, severe erosion or even burial into greater depths that forces their detection by low-resolution geophysical imaging. The current study focuses on a uniquely preserved Oligo-Miocene rift that was subsequently pirated by a crossing transform fault system and as a result died out. We integrate all geological, geophysical and results from previous studies from across the Southern Galilee to unravel the structural development of the Irbid failing rift, of Northwest Arabia. Despite tectonic, magmatic and geomorphologic activity postdating the rifting, its subsurface structure is preserved at depths of up to 1 km. Our results show that a series of basins subsided at the rift front, across the southern Galilee. We constrain the timing and extent of their subsidence into two main stages, based on facies analysis and chronology of magmatism. Between 20–9 Ma grabens and half-grabens subsided within a larger releasing jog, following an NW direction of a deeper presumed Principal Displacement Zone. The basins continued to subside until a transition from the Red Sea to Dead Sea stress regime occurred. With the transition, the basins ceased to subside as a rift, while the Dead Sea Fault split the jog structure. Between 9–5 Ma basin subsidence accentuated and an uplift of their margins accompanied their overall elongation to the NNE. Our study provides for the first time a structural as well as tectonic context to the southern Galilee basins. Based on this case study we suggest that the rift did not fail but rather faded and was taken over by a more dominant stress regime. Otherwise, these basins of a failing rift could have simply died out peacefully.

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Structure-controlled groundwater flow and salinization paths in the Bet She’an and Harod Valleys, Israel

2011

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A seismic interpretation of the Bet She'an basin

Abstract: Meiler, M., Shulman, H., Flexer, A., Reshef, M., and Yellin-Dror, A. 2008. A seismic interpretation of the Bet She'an basin. Isr. J. Earth Sci. 57: 1-19.

Cited by 13 publications

References 7 publications

The Hydrogeochemical Stratigraphy of Brines and Its Implications on Water Management in the Central Jordan-Dead Sea Rift Valley, Israel

The Hydrogeochemical Stratigraphy of Brines and Its Implications on Water Management in the Central Jordan-Dead Sea Rift Valley, Israel

Structural expression of a fading rift front, a case study from the Oligo-Miocene Irbid rift of northwest Arabia

Structure-controlled groundwater flow and salinization paths in the Bet She’an and Harod Valleys, Israel

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