Pliocene-Pleistocene waterbodies and associated deposits in southern Israel and southern Jordan. (January 2018) - Ginat, Hanan
Abstract: This paper provides an in-depth review of evidence for the presence of twelve waterbodies spanning the Late Pliocene through Late Pleistocene in southern Israel and southern Jordan. A comprehensive description of these waterbodies is presented, combined with new field, paleontological and numerical age data, along with a discussion of their implications for paleohydrology and paleoclimate. The region is currently hyper-arid and there are no permanent rivers, wetlands or lakes in the area. Nevertheless, during the time-frame examined, continuous layers of limestones and mudstones were deposited in wetlands and shallow lakes. According to their location, the waterbodies were classified into either resulting from local tectonic depressions or in wide natural depressions at base levels. Following the types of sediments and fauna associated with these waterbodies, it is suggested that four wetter periods occurred: Late Pliocene/Early Pleistocene, Middle Pleistocene, Middle Late Pleistocene and terminal Late Pleistocene. This resulted in the deposition of limestone, chalk, travertine, calcrete, mudstone, marl, clay, silt and sandstone. For several waterbodies, vertical and lateral transitions between white limestone and fine clastic sediments rich in carbonate, indicate changes in depositional conditions from a shallow lake to a wetland, both associated with wetter hydrological settings compared to current climatic conditions. Highlights: Waterbodies from the Late Pliocene through Late Pleistocene in Israel and Jordan. Limestones and mudstones were deposited in wetlands and shallow lakes. Four wet periods occurred during the end of the Pliocene and the Pleistocene. The waterbodies were classified into two groups: base levels and local depressions. The rocks present different depositional conditions from shallow lakes to wetlands.