Palynological evidence for the age and rate of sedimentation along the Dead Sea rift, and structural implications

A. Horowitz*

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

46 Scopus citations

Abstract

Pollen diagrams obtained for eight deep boreholes penetrating the thick sequences of the Dead Sea Rift fill, correlated with dated marine sequences of the coastal plain in Israel, enable stratigraphie assignment of the continental deposits to be made. The sedimentary units of the Rift Valley are of two main provenances: those deposited in troughs within the rift limits, of predominantly lacustrine environment, attaining thicknesses in the order of 1-2 km, for which the trough is the final erosion base level; and those not limited to the rift boundaries but known from wide areas in Israel, mostly laid down in river systems that crossed the rift region on their way to the sea. These fluviatile formations are in the order of hundreds of meters thick in the Rift Valley region which acted as an intermediate basin. The first group of rock units, of late Miocene through early-middle Pliocene to Glacial Pleistocene ages, indicate phases of considerable subsidence, the earlier termed the Erythrean and the later the Levantine phase. These are predated in the late Oligocène through middle Miocene by gentle subsidence and separated during the late Pliocene-Preglacial Pleistocene by another period of relative quietness in tectonic activity.

Original languageEnglish
Pages (from-to)107-115
Number of pages9
JournalTectonophysics
Volume141
Issue number1-3
DOIs
StatePublished - 15 Sep 1987

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