The boundary is between the Australian Plate and the Pacific Plate.
Plate boundaries.
A fault line is the boundary between two tectonic plates; fault lines do not ordinarily appear on maps.
When two tectonic plates collide, it is called a convergent boundary. This collision can result in the plates pushing against each other, causing one plate to be forced beneath the other in a process known as subduction.
Fault lines exist where one tectonic plate meets another. For example the San Andreas Fault in California is the boundary between the North American plate (on the east of the fault line) and the Pacific plate (on the west of the fault line)
New Zealand is an "active landscape" because it lies on a continental fault line. Earthquakes and volcanic activity are the result of movement between tectonic plates. These plates constantly move as underground stresses are released through the Earth's crust. The islands of New Zealand are situated over the boundary between the Australian and Pacific tectonic plates. The Pacific "Ring of Fire" is the area where most of the world's seismic activity takes place. It is a ring encircling the Pacific Ocean in a roughly horseshoe shape, beginning at New Zealand, continuing up through the Philippines and Indonesia, through the edge of the eastern Asian countries, then down the western coast of the USA and South America.
by tectonic plates
The line where plates meet is called a plate boundary. Plate boundaries can be categorized into three main types: divergent boundaries where plates move away from each other, convergent boundaries where plates move towards each other, and transform boundaries where plates slide past each other horizontally. These boundaries are dynamic areas where tectonic forces shape the Earth's surface through processes like subduction, seafloor spreading, and earthquakes.
When two plates move past each other, a transform fault boundary is formed. This boundary is characterized by horizontal motion, and the friction between the plates causes earthquakes along the fault line.
The plates with a transforming boundary. These will create different "landmarks" such as lakes (if the edges have a curve), valleys, rivers, and abandoned riverbeds.
The Haiti earthquake occurred at the boundary of the Caribbean tectonic plate and the North American tectonic plate. The specific fault line responsible for the earthquake was the Enriquillo-Plantain Garden fault zone.
Christchurch has experienced more earthquakes than other parts of New Zealand due to its proximity to the Pacific and Australian tectonic plates, which cause frequent seismic activity in the region. Additionally, Christchurch is located near several fault lines, increasing the likelihood of earthquakes in the area.
The Plate Boundaries. It could be called the plate boundary, plate edge, or continental divide. With tectonic plates, they meet at the fault line.