Abrupt aridities and salt deposition in the post-glacial Dead Sea and their North Atlantic connection

作者：Stein Mordechai^*; Torfstein Adi; Gavrieli Ittai; Yechieli Yoseph

来源：Quaternary Science Reviews, 2010, 29(3-4): 567-575.

DOI：10.1016/j.quascirev.2009.10.015

Abrupt and events in the post-glacial (similar to 17.4-10 kyr BP) Dead Sea Basin (DSB) were recorded by significant lake level declines in Lake Lisan and massive deposition of gypsum and salt. Between 17.4 and 16 kyr cal BP, the lake level dropped from its late M152 stand of similar to 260 m below mean sea level (m bmsl) to similar to 330 m bmsl, depositing a thick sequence of gypsum. Between similar to 16 and 15 kyr cal BP the lake level recovered but dropped abruptly again at similar to 14 kyr cal BP to below 465 m bmsl, probably the lowest late Pleistocene stand. Then, between 13 and 11 kyr cal BP (the Younger Dryas time interval) the lake rose above 400 m bmsl and declined at 11-10 kyr cal BP depositing a thick sequence of salt. The abrupt lake level drops and salt deposition coincided with times of ice and meltwater discharges into the North Atlantic (NA): Heinrich event (H1) and Meltwater Pulse - MWP1a. Similar coincidence between ice and meltwater discharges in the NA (e.g., H-events) and and episodes at the Levant was recorded during the colder last glacial period, demonstrating a persistent effect of the North Atlantic hydrology and sea ice advances on the Levant climate. The climatically "turmoil" post-glacial period was accompanied by significant developments in human culture: the collapse of the Natufian culture during the Bolling-Allerod and the rise of the Pre-Pottery Neolithic cultures, PPN A and B around the 11-10 kyr cal BP salt deposition interval marking the initiation of the "Neolithic revolution" in the region.

• 出版日期2010-2