Ariel Heimann

OR Consulting & Development

The IDF has recently assigned soldiers from combat units to tasks of protecting the residents of Jerusalem, Tel Aviv, and other cities, as reinforcement for the Israel Police. This situation is problematic in many senses, as assigning soldiers to policing tasks is a measure that is reserved for real emergency situations. Despite the current tense s...

Statistical analysis of geomagnetic paleosecular variation (PSV) and time‐averaged field has been largely based on global compilations of paleomagnetic data from lava flows. These show different trends in the averaged inclination anomaly (ΔI) between the two hemispheres, with small positive (<2°) anomalies in midsouthern latitudes and large negativ...

The Hula Valley, located in northeastern Israel, is a 4 million-year old pull-apart basin bounded by two left stepped segments of the Dead Sea Transform. Basic models of pull-apart basins suggest four faults at all sides of the basin, a situation which is not always the case. In the Hula pull-apart basin the longitudinal (N–S) faults are clearly ev...

Following collision with Eurasia, the Arabian Shield indenter has continued to deform into the weak Anatolian collisional collage that resulted from subduction of the Neotethyan Ocean. Differential movements have involved rotation and continuing northwards translation, and have been accommodated mainly by slip along major transforms including the n...

This study describes the field and petrographic relationships of a widespread deposit of Pleistocene travertines in the northern Hula Valley, northern Israel. The travertines interfinger with conglomerate deposits and basaltic lava flows. Field relationships and radiometric dating indicate that the travertines accumulated intermittently over the pa...

The upper level of a volcanic vent is exposed along Nahal Tavor, Lower Galilee, Israel. The vent, about 300 m in diameter, was formed within the Middle Miocene Lower Basalt sequence. This is the largest documented volcanic edifice from that widespread formation. The vent consists of pyroclastic rocks (tuff, lapilli, scoria, and volcanic bombs), lav...

Three-dimensional excavations of buried stream channels that have been displaced by the Jordan Fault, the primary strand of the Dead Sea fault zone in northern Israel, demonstrate that late Holocene slip has been primarily strike–slip at a minimum rate of 3 mm/yr. The palaeoseismic study was carried out in the Bet-Zayda Valley, the delta of the Jor...

The central Aegean region has been affected by extensional tectonics since at least the Oligo-Miocene. On Tinos Island (Cyclades, Greece), a low-angle normal fault places low-grade metamorphic rocks (the Upper Unit) above high-pressure rocks (the Cycladic Blueschist Unit). K-Ar and 40Ar/39Ar ages were obtained by us on white-micas, amphiboles, and...

In southern Turkey ongoing differential impingement of Arabia into the weak Anatolian collisional collage resulting from subduction of the Neotethyan Ocean has produced one of the most complex crustal interactions along the Alpine–Himalayan Orogen. Several major transforms with disputed motions, including the northward extension of the Dead Sea Fau...

Left-lateral strike slip along the Dead Sea Fault Zone (DSFZ) between the African and Arabian plates is partitioned into a complex set of motions at its northern extension where Arabia impinges into the Anatolian collage. As a result, the nature of the contemporary link between the east Anatolian and Dead Sea transforms is unclear. To quantify stri...

The stability of the glacial Thermohaline Circulation (THC) is investigated using a global ocean general circulation model (GCM). The model is forced by fields of wind, temperature, and freshwater flux derived from a simulation of an atmosphere GCM for the Last Glacial Maximum. The modelled glacial THC is characterized by active deep water formatio...

In the Cyclades, low-angle normal faults juxtaposed Miocene sedimentary rock units lying over Alpine blueschist- and greenschist-facies metamorphic rocks and Miocene granites. The sedimentary units in the hanging wall were deposited in fault-bounded basins while their footwalls progressively emerged through the ductile and brittle crust. The sedime...

The Karasu Rift (Antakya province, SE Turkey) has developed between east-dipping, NNE-striking faults of the Karasu fault zone, which define the western margin of the rift and west-dipping, N–S to N20°–30°E-striking faults of Dead Sea Transform fault zone (DST) in the central part and eastern margin of the rift. The strand of the Karasu fault zone...

Paleoseismic analysis of the Azaz fault segment of the Dead Sea Fault (northern Israel), indicates that this region was subjected to intermittent periods of strong seismicity and quiescence during the latest Pleistocene and the Holocene. The Azaz fault forms the eastern margin of the Hula Valley, a pull-apart basin between two left-stepping segment...

The Kinnarot Basin is one of several pull-apart basins located along the Dead Sea Transform. It consists of a buried Miocene to Upper Pleistocene sequence, penetrated by the 4249-m-deep Zemah #1 borehole, and an exposed Pliocene to Upper Pleistocene sedimentary and volcanic sequence. The Pleistocene sequence is exposed only within the valley and do...

The doleritic dike of Mt. Timna intrudes relatively homogeneous alkali granite that was previously fractured and intruded by rhyolitic, andesitic, and andesitic-rhyolitic composite dikes. The doleritic dike directly underlies the sandstone of the Amudei Shelomo Formation of Early Cambrian age. The sandstones do not exhibit any sign of contact metam...

This study describes the geology and geochronology of the Neoproterozoic Amram Massif, southern Negev Desert, Israel. The Amram Massif consists of a well-exposed alkaline rock suite comprised of alkali granites, rhyolites, monzonites, quartz syenites, and various types of mafic to felsic dikes, overlain unconformably by Cambrian sandstones. The fie...

The Yehudiyya Block (YB) is located in the western part of the Golan Heights, along the eastern margins of the Dead Sea Transform. The block, covered by basalt, is part of the unfaulted plateau of the Golan Heights and dips to the southwest towards the Beteiha Valley and the shores of the Sea of Galilee. A set of NNW-trending normal faults traverse...

The Aegean Sea, floored by an attenuated continental crust, is a Mediterranean-type back-arc basin formed above the subducting African plate. We investigated post-12 Ma block rotation in relation to back-arc extension in the area of the western Cyclades (central Aegean Sea). On Tinos island, NW-trending dacitic dikes and a Miocene monzogranite pene...

Structural and metamorphic field data combined with detailed petrological and geothermobarometric studies were used to define the Precambrian pressure-temperature (P-T) evolution of the northern Arabian-Nubian Shield exposed in the eastern Roded area, southern Israel. Rock units in the Roded area include amphibolite facies schists, quartzofeldspath...

The Ferrar Dolerite constitutes the hypabyssal phase of the tholeiitic Ferrar Group of Antarctica. Sills with compositions representing most of the range of geochemical variation of the Ferrar Dolerite, and separated by distances of as much as 1400 km, have been analyzed by the 40Ar/39Ar method on feldspar and biotite separates. The 40Ar/39Ar ages...

Volcanism in northeastern Israel constitutes part of an extensive. NW-SE-trending Cenozoic volcanic field ranging from the Dead Sea Rift area, southern and western Syria, Jordan, to Saudi Arabia. By its volume and extension, the Cover Basalt Formation is the most significant volcanic phase at the northwestern end of this field. This unit is the maj...

Several noncontinuous bodies of basalt have been found recently within the gypsum layers of the Upper Triassic Mohilla Formation near En Saharonim, southeastern Makhtesh Ramon. The basalts show porphyritic textures with 10 to 20% olivine phenocrysts. Two samples from one outcrop were dated by the 40Ar/39Ar method, as 213.6 ± 3.6 Ma and 209.6 ± 2.1...

The 'Amud Stream in eastern Galilee, Israel, drains southeastwards to the Sea of Galilee base level, which is part of the Dead Sea Rift. Conglomerates of Neogene age, exposed close to the stream, show a WNW palaeodrainage direction. Young basalt flows, 2.5-2.2 Ma (±0.2 Ma) old, along the 'Amud Stream slope northwards towards a younger conglomerate...

A continental flood basalt province, the Ferrar Group (Kirkpatrick Basalt and Ferrar Dolerite), crops out along 3000 km of the Transantarctic Mountains in Antarctica and is temporally related to the break-up of Gondwanaland. Although a wide range of dates, between 90 and 193 Ma, have been published for the Kirkpatrick Basalt, it is now recognized t...

incremental-heating measurements are reported for separated plagioclase and matrix fractions and a glass sample of the Kirkpatrick Basalt from Victoria Land, Antarctica. These results are used to address: the limitations of whole-rock analyses of glassy or very fine-grained basalts; the use of plagioclase for determining ages of such rocks; the Ar...

The Korazim block, an elevated pressure-ridge, along with the faults bounding the Sea of Galilee and Hula pull-apart basins are internal structures of the Dead Sea Transform plate boundary. K-Ar dates and paleomagnetic data from basalt flows and sedimentary strata are utilized to determine the stratigraphy and the deformation of the region. The int...

The Gesher Benot Ya'aqov archaeological site in the northern Dead Sea Rift of Israel contains Acheulian artifacts and middle Pleistocene fossils. Initial results of a new interdisciplinary study have shown that fluviolacustrine sediments of the Benot Ya'aqov Formation, which contains several archaeological occupations, were deposited in an embaymen...

A Cd shielded Al irradiation canister is rotated at a position close to the core. The power of the reactor is usually rated at 4.5 MW and the total neutron flux is 1 to 3 × 1013 n/cm2 × s in the center of the core. The ratio of thermal/fast neutrons has been found to be <1/50 in the Cd shielded canister. Three quartz tubes with an effective length...

Mount Hermon forms part of a NE-trending anticlinal structure formed during compression resulting from sinistral movement along the Dead Sea Rift Transform. At the northern end of the Hula Valley the Dead Sea Transform branches into five faults, one of which, the Rachaya Fault, crosses the Hermon on its western side, with about 1000 m of left-later...

The geometry and nature of structural features inside the Hula Pull-Apart Basin, at the central Dead Sea Transform, are presented here. Two systems of N-S left-lateral strike-slip faults are located on the east and west sides of the Hula Basin. Both fault systems are composed of several segments arranged in a right stepping “en-echelon” pattern. Th...

In the northern Golan Heights, which is built up from volcanic ejections, paleolithic artifacts are found embedded between basalt flows, and in other stratified ejecta. The archaeological objective is to describe the styles of artifacts which belong to particular cultures, which means particular periods. This can be done if different rock stratigra...