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Tell Barri, northeastern Syria, from the west; this is 32 meters (105 feet) high, and its base covers 37 hectares (91 acres) Tel Be'er Sheva, Beersheva, Israel. In archaeology, a tell (from Arabic: تَلّ, tall, 'mound' or 'small hill') [1] is an artificial topographical feature, a mound [a] consisting of the accumulated and stratified debris of a succession of consecutive settlements at the ...
It is a common middle stage in the transformation of a cohesive debris flow from a landslide or rockslide. Debris avalanches may be restricted to grain flows or granular flows, in which flow mechanics are governed by particle interactions involving friction and collision. Debris flows, in contrast, owe much of their behaviour to excess pore ...
Debris flows with volumes ranging up to about 100,000 cubic meters occur frequently in mountainous regions worldwide. The largest prehistoric flows have had volumes exceeding 1 billion cubic meters (i.e., 1 cubic kilometer). As a result of their high sediment concentrations and mobility, debris flows can be very destructive.
Rio Huitzilapan debris flows est. 600–870 Debris flows destroyed village of Barranca Grande, and were 40 to 65 m (131 to 213 ft) deep. Debris flows extended >40 km (25 mi). Triggered by M~6.5 earthquake. [69] 1921 Almaty, Kazakhstan: Alma-Ata Debris Flows ~500 A debris flow in the Valley of Alma-Atinka River destroyed the town of Alma-Ata. [69]
Step-like geomorphology at the Putorana Plateau, which is a World Heritage Site.. The source of the Siberian Traps basaltic rock has been attributed to a mantle plume, which rose until it reached the bottom of the Earth's crust, producing volcanic eruptions through the Siberian Craton. [8]
A lahar (/ ˈ l ɑː h ɑːr /, from Javanese: ꦮ꧀ꦭꦲꦂ) is a violent type of mudflow or debris flow composed of a slurry of pyroclastic material, rocky debris and water. The material flows down from a volcano, typically along a river valley. [1] Lahars are often extremely destructive and deadly; they can flow tens of metres per second ...
Debitage sourcing looks at the physical properties of the worked stone in an attempt to determine where on the earth it was obtained. This may require sophisticated equipment, and destructive testing, but even a visual inspection can provide a general idea. Sourcing is assumed to provide information about trade, or travel routes. [citation needed]
Officials needed to temporarily close certain beaches due to the amount of debris washing ashore. [23] However, searchers have never been able to find any sizable amount of the plane or its engines. Most of the debris found was no larger than a person's hand. [22] Authorities assume the aircraft crashed into Lake Michigan.