Drainage system reorganization and late Quaternary tectonic deformation along the southern Dead Sea Transform – ADDENDUM

2018 ◽  
Vol 90 (2) ◽  
pp. 436-436
Author(s):  
Yedidia Gellman ◽  
Ari Matmon ◽  
Amit Mushkin ◽  
Naomi Porat
Keyword(s):  
Late Quaternary ◽  
Drainage System ◽  
Dead Sea ◽  
Tectonic Deformation ◽  
Dead Sea Transform

Drainage system reorganization and late Quaternary tectonic deformation along the southern Dead Sea Transform

2018 ◽  
Vol 90 (2) ◽  
pp. 380-393 ◽  
Author(s):  
Yedidia Gellman ◽  
A. Matmon ◽  
Amit Mushkin ◽  
N. Porat
Keyword(s):  
Cross Sections ◽  
Late Quaternary ◽  
Drainage System ◽  
Dead Sea ◽  
Osl Dating ◽  
Arabian Plate ◽  
Tectonic Deformation ◽  
Dead Sea Transform ◽  
Western Margin ◽  
Geomorphic Mapping

AbstractThe Dead Sea Transform (DST) accounts for ~105 km of left-lateral slip between the Arabian plate and the Sinai subplate since the Miocene. Paleoseismic studies along the Arava Valley segment of the DST suggest that late Quaternary deformation has been primarily concentrated along the axis of the transform valley. Here, we examine late Quaternary changes in drainage system characteristics and attribute them to recent tectonic deformation in this region. Field-based geomorphic mapping, topographic cross sections, and optically stimulated luminescence (OSL) dating of fluvial deposits were used to map and date recent changes in the fluvial characteristics of catchments along the western margin of the southern Arava. Our results reveal coeval migration of channels, consistent with tectonically induced surface tilting caused by north–south compressional deformation along the western margin of the transform valley. OSL dating indicates this tilting was initiated in the late Pleistocene and continued at least into the mid-Holocene. The late Quaternary tectonic deformation along the southern Arava segment of the DST is distributed across a wider zone than previously considered and extends out to the margins of the transform valley. We associate the inferred wider deformation zone to possible changes in the geometry of motion along the DST.

Seismic Energy Release from Intra-Basin Sources along the Dead Sea Transform and Its Influence on Regional Ground Motions

2020 ◽  
Author(s):  
Roey Shimony ◽  
Zohar Gvirtzman ◽  
Michael Tsesarsky
Keyword(s):  
Ground Motions ◽  
Seismic Energy ◽  
Sedimentary Basins ◽  
Seismic Wave Propagation ◽  
Dead Sea ◽  
Strike Slip ◽  
Dead Sea Transform ◽  
Bay Area ◽  
The Dead ◽  
Surrounding Areas

ABSTRACT The Dead Sea Transform (DST) dominates the seismicity of Israel and neighboring countries. Whereas the instrumental catalog of Israel (1986–2017) contains mainly M<5 events, the preinstrumental catalog lists 14 M 7 or stronger events on the DST, during the past two millennia. Global Positioning System measurements show that the slip deficit in northern Israel today is equivalent to M>7 earthquake. This situation highlights the possibility that a strong earthquake may strike north Israel in the near future, raising the importance of ground-motion prediction. Deep and narrow strike-slip basins accompany the DST. Here, we study ground motions produced by intrabasin seismic sources, to understand the basin effect on regional ground motions. We model seismic-wave propagation in 3D, focusing on scenarios of Mw 6 earthquakes, rupturing different active branches of the DST. The geological model includes the major structures in northern Israel: the strike-slip basins along the DST, the sedimentary basins accompanying the Carmel fault zone, and the densely populated and industrialized Zevulun Valley (Haifa Bay area). We show that regional ground motions are determined by source–path coupling effects in the strike-slip basins, before waves propagate into the surrounding areas. In particular, ground motions are determined by the location of the rupture nucleation within the basin, the near-rupture lithology, and the basin’s local structure. When the rupture is located in the crystalline basement or along material bridges connecting opposite sides of the fault, ground motions behave predictably, decaying due to geometrical spreading and locally amplified atop sedimentary basins. By contrast, if rupture nucleates or propagates into shallow sedimentary units of the DST strike-slip basins, ground motions are amplified within, before propagating outside. Repeated reflections from the basin walls result in a “resonant chamber” effect, leading to stronger regional ground motions with prolonged durations.

Multiple strike-slip fault sets: A case study from the Dead Sea Transform

Tectonics ◽  
1990 ◽  
Vol 9 (6) ◽  
pp. 1421-1431 ◽  
Author(s):  
H. Ron ◽  
A. Nur ◽  
Y. Eyal
Keyword(s):  
Dead Sea ◽  
Strike Slip ◽  
Strike Slip Fault ◽  
Dead Sea Transform ◽  
The Dead

scholarly journals Late Quaternary drainage dynamics in northern Brazil based on the study of a large paleochannel from southwestern Marajó Island

2008 ◽  
Vol 80 (3) ◽  
pp. 579-593 ◽  
Author(s):  
Dilce F. Rossetti ◽  
Ana M. Góes
Keyword(s):  
Remote Sensing ◽  
Forest Cover ◽  
Late Quaternary ◽  
Drainage System ◽  
Perfect Agreement ◽  
Marajó Island ◽  
Northern Brazil ◽  
Remote Sensing Mapping ◽  
The Town ◽  
Tectonic Origin

Marajó Island shows an abundance of paleochannels easily mapped in its eastern portion, where vegetation consists mostly of savannas. SRTM data make possible to recognize paleochannels also in western Marajó, even considering the dense forest cover. A well preserved paleodrainage network from the adjacency of the town of Breves (southwestern Marajó Island) was investigated in this work combining remote sensing and sedimentological studies. The palimpsest drainage system consists of a large meander connected to narrower tributaries. Sedimentological studies revealed mostly sharp-based, fining upward sands for the channelized features, and interbedded muds and sands for floodplain areas. The sedimentary structures and facies successions are in perfect agreement with deposition in channelized and floodplain environments, as suggested by remote sensing mapping. The present study shows that this paleodrainage was abandoned during Late Pleistocene, slightly earlier than the Holocene paleochannel systems from the east part of the island. Integration of previous studies with the data available herein supports a tectonic origin, related to the opening of the Pará River along fault lineaments. This would explain the disappearance of large, north to northeastward migrating channel systems in southwestern Marajó Island, which were replaced by the much narrower, south to southeastward flowing modern channels.

scholarly journals Thermal impacts of magmatic intrusions: a hypothesis of paleo-heating processes in the Tiberias Basin, Jordan-Dead Sea Transform

2017 ◽  
Vol 125 ◽  
pp. 80-87 ◽  
Author(s):  
Nora Koltzer ◽  
Peter Möller ◽  
Nimrod Inbar ◽  
Christian Siebert ◽  
Eliyahu Rosenthal ◽  
...  
Keyword(s):  
Dead Sea ◽  
Dead Sea Transform ◽  
Magmatic Intrusions

Between plate and salt tectonics—New stratigraphic constraints on the architecture and timing of the Dead Sea basin during the Late Quaternary

2019 ◽  
Vol 32 (4) ◽  
pp. 636-651 ◽  
Author(s):  
Lisa Coianiz ◽  
Uri Schattner ◽  
Guy Lang ◽  
Zvi Ben‐Avraham ◽  
Michael Lazar
Keyword(s):  
Late Quaternary ◽  
Dead Sea ◽  
Salt Tectonics ◽  
Dead Sea Basin ◽  
The Dead

scholarly journals The earthquake of 1 January 1837 in Southern Lebanon and N orthern Israel

1997 ◽  
Vol 40 (4) ◽  
Author(s):  
N. N. Ambraseys
Keyword(s):  
Middle East ◽  
20Th Century ◽  
Dead Sea ◽  
Transform Fault ◽  
Earthquake Catalogues ◽  
Dead Sea Transform ◽  
The Past ◽  
Fault Systems ◽  
Heavy Damage

All of our 20th-century information for the Levant Fracture and Dead Sea transform fault systems is for a qui- escent period in the seismicity. This is apparent when we consider earlier events which show that infi.equent earthquakes have occurred in the past along this system, an important consideration for the assessment of haz- ard and tectonics of the Middle East. One of these events was the earthquake of 1837 which caused heavy damage in Northem Israel and Southem Lebanon. This earthquake was a much larger event than earthquake catalogues indicate. We reckon it was a shallow, probably multiple event of magnitude greater than 7.0.

Palaeoenvironmental reconstruction in the Southern Levant: synthesis, challenges, recent developments and perspectives

2010 ◽  
Vol 368 (1931) ◽  
pp. 5225-5248 ◽  
Author(s):  
Claire M. C. Rambeau
Keyword(s):  
Environmental Changes ◽  
Late Quaternary ◽  
Dead Sea ◽  
Future Research ◽  
Southern Levant ◽  
Unequal Distribution ◽  
Palaeoenvironmental Reconstruction ◽  
First Results ◽  
Recent Developments ◽  
The Dead

Palaeoenvironmental research in the Southern Levant presents a series of challenges, partly due to the unequal distribution of palaeoenvironmental records and potential archives throughout the region. Our knowledge of climatic evolution, during the last approximately 25 000 years, is of crucial importance to understand cultural developments. More local, well-dated, multi-proxy studies are much needed to obtain an accurate picture of environmental change in respect of the Late Pleistocene and the Holocene. This contribution reviews the current state of knowledge regarding Late Quaternary palaeoenvironmental changes in the Southern Levant, including some examples of more recent developments in palaeoenvironmental reconstruction in Israel and the Dead Sea area, and introduces the major challenges researchers face in the region. It also presents the first results of a new case study in Jordan, based on an analysis of peaty deposits located in the mountain slopes east of the Dead Sea. Such new studies help refine our knowledge of local environmental changes in the Southern Levant and especially the more arid areas, for which little information is presently available. More material suitable for palaeoenvironmental research, for example extensive tufa and travertine series, still awaits consideration in Jordan, opening up exciting perspectives for future research in the area.

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