DENVER — A superheated blast from the skies obliterated cities and farming settlements north of the Dead Sea around 3,700 years ago, preliminary findings suggest.
Radiocarbon dating and unearthed minerals that instantly crystallized at high temperatures indicate that a massive airburst caused by a meteor that exploded in the atmosphere instantaneously destroyed civilization in a 25-kilometer-wide circular plain called Middle Ghor, said archaeologist Phillip Silvia. The event also pushed a bubbling brine of Dead Sea salts over once-fertile farm land, Silvia and his colleagues suspect.
People did not return to the region for 600 to 700 years, said Silvia, of Trinity Southwest University in Albuquerque. He reported these findings at the annual meeting of the American Schools of Oriental Research on November 17.
Excavations at five large Middle Ghor sites, in what’s now Jordan, indicate that all were continuously occupied for at least 2,500 years until a sudden, collective collapse toward the end of the Bronze Age. Ground surveys have located 120 additional, smaller settlements in the region that the researchers suspect were also exposed to extreme, collapse-inducing heat and wind. An estimated 40,000 to 65,000 people inhabited Middle Ghor when the cosmic calamity hit, Silvia said.
The most comprehensive evidence of destruction caused by a low-altitude meteor explosion comes from the Bronze Age city of Tall el-Hammam, where a team that includes Silvia has been excavating for the last 13 years. Radiocarbon dating indicates that the mud-brick walls of nearly all structures suddenly disappeared around 3,700 years ago, leaving only stone foundations.
Science News: An exploding meteor may have wiped out ancient Dead Sea communities
9E. Environmental Archaeology of the Ancient Near East CHAIRS: Madelynn von Baeyer (Harvard University) and Melissa Rosenzweig (Northwestern University)
Phillip J. Silvia (Trinity Southwest University), A. Victor Adedeji (Elizabeth City State University), Ted E. Bunch (Northern Arizona University), T. David Burleigh (New Mexico Tech), Robert Hermes (Los Alamos National Laboratory), George Howard (Restoration Systems), Malcolm A. LeCompte (Comet Research Group), Charles Mooney (NC State University), E. Clay Swindel (Comet Research Group), Allen West (Comet Research Group), Tim Witwer (Comet Research Group), James H. Wittke (Northern Arizona University), Wendy S. Wolback (DePaul University), and Dale Batchelor (EAG Laboratories),
“The 3.7kaBP Middle Ghor Event: Catastrophic Termination of a Bronze Age Civilization” This paper surveys the multiple lines of evidence that collectively suggest a Tunguskalike, cosmic airburst event that obliterated civilization—including the Middle Bronze Age city-state anchored by Tall el-Hammam—in the Middle Ghor (the 25 km diameter circular plain immediately north of the Dead Sea) ca. 1700 B.C.E., or 3700 years before present (3.7kaBP). Analyses of samples taken over twelve seasons of the Tall el Hammam Excavation Project have been and are being performed by a team of scientists from New Mexico Tech, Northern Arizona University, NC State University, Elizabeth City (NC) State University, DePaul University, Trinity Southwest University, the Comet Research Group, and Los Alamos National Laboratories, with remarkable results. Commensurate with these results are the archaeological data collected from across the entire occupational footprint (36 ha) of Tall el-Hammam, demonstrating a directionality pattern for the high-heat, explosive 3.7kaBP Middle Ghor Event that, in an instant, devastated approximately 500 km2 immediately north of the Dead Sea, not only wiping out 100% of the Middle Bronze Age cities and towns, but also stripping agricultural soils from once-fertile fields and covering the eastern Middle Ghor with a super-heated brine of Dead Sea anhydride salts pushed over the landscape by the Event’s frontal shockwaves. Based upon the archaeological evidence, it took at least 600 years to recover sufficiently from the soil destruction and contamination before civilization could again become established in the eastern Middle Ghor.