How deep is the Chilean trench?
26,460 feet
It reaches a maximum depth of 26,460 feet (8,065 m) below sea level in Richards Deep and is approximately 3,666 miles (5,900 km) long; its mean width is 40 miles (64 km) and it covers an expanse of some 228,000 square miles (590,000 square km).
What caused the Peru-Chile Trench?
Geology. The trench is a result of a convergent plate boundary, where the eastern edge of the oceanic Nazca Plate is being subducted beneath the continental South American Plate.
Is there a deep ocean trench in Chile?
Atacama Trench, located off the coasts of Peru and Chile, is one of the deepest ocean trenches in the world and has a maximum depth of 8,065 m. It is almost 6,000 kilometers long.
How old is Peru-Chile Trench?
Nazca-South America convergence over the past 23 million years has created the 6-km-deep Peru-Chile trench, 150 km offshore. High pressure between the plates creates a locked zone, leading to deformation of the overriding plate.
What is the deepest trench on Earth?
The Mariana Trench
The Mariana Trench, in the Pacific Ocean, is the deepest location on Earth. According to the Exclusive Economic Zone (EEZ), the United States has jurisdiction over the trench and its resources.
What caused the Arica Tsunami in 1868?
Tectonic setting. The earthquake occurred along the boundary between the Nazca Plate and the South American Plate. The earthquake was likely a result of thrust-faulting, caused by the subduction of the Nazca plate beneath the South American plate.
What created the Mariana Trench?
subduction
The Mariana Trench was formed through a process called subduction. Earth’s crust is made up of comparably thin plates that “float” on the molten rock of the planet’s mantle. While floating on the mantle, the edges of these plates slowly bump into each other and sometimes even collide head-on.
What is the earth deepest point called?
The Mariana Trench, in the Pacific Ocean, is the deepest location on Earth.
How long did the 1868 earthquake last?
between five and ten minutes
Contemporary accounts say that the earthquake shaking lasted somewhere between five and ten minutes.
How many people died in the 1868 tsunami?
The 1868 Hawaii earthquake was the largest recorded in the history of Hawaiʻi island, with an estimated magnitude of 7.9 Mfa and a maximum Mercalli intensity of X (Extreme). The earthquake occurred at 4 p.m. local time on April 2, 1868 and caused a landslide and tsunami that led to 77 deaths.
What is the depth of the Peru and Chile Trench?
The Peru–Chile Trench, also known as the Atacama Trench, is an oceanic trench in the eastern Pacific Ocean, about 160 kilometres (99 mi) off the coast of Peru and Chile. It reaches a maximum depth of 8,065 m (26,460 ft) below sea level in Richards Deep (23°10′45″S 71°18′41″W
Where is the Atacama Trench in South America?
The Peru-Chile Trench, also known as the Atacama Trench, is an oceanic trench in the eastern Pacific Ocean, about 160 km (100 mi) off the coast of Peru and Chile. Oceanic trenches are topographic depressions of the sea floor, relatively narrow in width but very long.
Which is the longest trench in the world?
deep-sea trench: Types. The longest trench is the Peru-Chile Trench, which extends some 5,900 km (about 3,700 miles) along the west coast of South America. Trenches are relatively narrow, usually less than 100 km (about 60 miles) wide.….
What kind of sediments are in the Chile Trench?
From the Chile Triple Junction to Juan Fernández Ridge the trench is filled with 2.0–2.5 kilometres (1.2–1.6 mi) of sediments, creating a flat bottom topography. Sediments are mainly turbidites interspersed with oceanic deposits of clay, volcanic ash, and siliceous ooze.