| In Teria volcanic field | |
|---|---|
  In Teria volcanic field | |
| Highest point | |
| Coordinates | 26°48′50″N9°38′17″E / 26.814°N 9.638°E Coordinates: 26°48′50″N9°38′17″E / 26.814°N 9.638°E [1] |
In Teria volcanic field is a volcanic field in Algeria. It consists of about 20 craters.
In Teria is located close to Illizi. [2] The field consists of about twenty volcanic craters and tuff rings in a terrain of 100 square kilometres (39 sq mi), which were possibly formed by phreatomagmatic eruptions. [1] None of the craters exceeds 2 kilometres (1.2 mi) in width. [2]
This volcanic field lies northeast of Hoggar. Volcanism in northern Africa, such as in Darfur, Hoggar and Tibesti, has variously been proposed to be due to mantle plumes, reactivated tectonic lineaments in the crust and several more geologic mechanisms. In Hoggar, after Cenozoic uplift, volcanism peaked in the Miocene after an Eocene start and continued to this day. [2]
The field has also produced lapilli, lava bombs and melilitic rocks which contain xenoliths. [1] Minerals found at In Teria include granite, granulite, garnet and spinel peridotite, phlogopite, phlogopitite and pyroxenite. These xenoliths have interacted with melts and testify to the presence of old, thick lithosphere. [2]
The field was emplaced during the Quaternary, with possible Holocene activity. [1]
Viedma is a subglacial volcano whose existence is questionable. It is supposedly located below the ice of the Southern Patagonian Ice Field, an area disputed between Argentina and Chile. The 1988 eruption deposited ash and pumice on the ice field and produced a mudflow that reached Viedma Lake. The exact position of the edifice is unclear, both owing to the ice cover and because the candidate position, the "Viedma Nunatak", does not clearly appear to be of volcanic nature.
The Northern Cordilleran Volcanic Province (NCVP), formerly known as the Stikine Volcanic Belt, is a geologic province defined by the occurrence of Miocene to Holocene volcanoes in the Pacific Northwest of North America. This belt of volcanoes extends roughly north-northwest from northwestern British Columbia and the Alaska Panhandle through Yukon to the Southeast Fairbanks Census Area of far eastern Alaska, in a corridor hundreds of kilometres wide. It is the most recently defined volcanic province in the Western Cordillera. It has formed due to extensional cracking of the North American continent—similar to other on-land extensional volcanic zones, including the Basin and Range Province and the East African Rift. Although taking its name from the Western Cordillera, this term is a geologic grouping rather than a geographic one. The southmost part of the NCVP has more, and larger, volcanoes than does the rest of the NCVP; further north it is less clearly delineated, describing a large arch that sways westward through central Yukon.
Qal'eh Hasan Ali is a maar-producing volcanic field located southeast of Kerman Province, Iran. The field is presumed of Quaternary age, though it has produced no historic eruptions. Consisting of 14 maars each of different size, its most significant crater is Great Crater, about 1.2 kilometres (0.75 mi) in width and 200–300 metres (660–980 ft) in depth.
The San Quintín Volcanic Field is a collection of ten or eleven volcanic cinder cones situated along the Pacific coast of the Baja California peninsula in Mexico. The field formed by repeated eruptions beginning in the Pleistocene and ending about 3000 years ago. It is one of several known Quaternary period volcanic fields in Baja. The lava shields appear to have first grown as subaqueous volcanoes that emerged as islands.
The Igwisi Hills are a volcanic field in Tanzania. Three tuff cones are found there, one of which is associated with a lava flow. They are one of the few locations of possibly kimberlitic lava flows on Earth.
The Udokan Plateau is a volcanic field in Transbaikalia, Russia. It covers a surface area of 3,000 square kilometres (1,200 sq mi) northeast of Lake Baikal in North Asia. Volcanism in the Udokan Plateau included both basaltic lava flows and later individual volcanic cones. Volcanism commenced in the Miocene and continued on into the Holocene.
Durango volcanic field is a volcanic field in north-central Mexico, east of the Sierra Madre Occidental. The field covers a surface area of 2,100 square kilometres (810 sq mi).
Khanuy-Gol is a volcanic field in Mongolia. Khanuy-Gol is located in the northern Hangai range, north of the settlement of Bulgan.
Taryatu-Chulutu is a volcanic field in Mongolia. It is part of a volcanic area in Central Asia in the Hangai range that may be linked to the rifting of the Lake Baikal Rift. The field itself is located within the valleys of the Chuluut and Suman rivers. Volcanic activity occurred in the Miocene, Pliocene, Pleistocene and Holocene. The Khorgo cinder cone erupted during the Holocene and lava flows from it formed a lava dam generating Terkhiin Tsagaan Nuur lake.
Pali-Aike volcanic field is a volcanic field in Argentina which straddles the border with Chile. It is part of a province of back-arc volcanoes in Patagonia, which formed from processes involving the collision of the Chile Rise with the Peru–Chile Trench. It lies farther east than the Austral Volcanic Zone, the volcanic arc which forms the Andean Volcanic Belt at this latitude.
Vitim Plateau is a volcanic landform in Russia. It consists of a plateau with a number of cinder cones and volcanoes, the last of which was active about 810,000 years before present.
Cima volcanic field is a volcanic field in San Bernardino County, California, close to the border with Nevada. The volcanic field covers a surface area of 600 square kilometres (230 sq mi) within the Mojave National Preserve west of the Cima Dome and consists of about 40 volcanic cones with about 60 lava flows. The volcanic cones range from simple cones over multi-cratered mountains to eroded hills, and lava flows are up to 9.1 kilometres (5.7 mi) long. At least one lava tube exists in the field and can be visited.
Tahalra volcanic field is a volcanic field in Algeria. It consists of a Miocene lava plateau and a number of Pliocene to Holocene age individual vents, including cinder cones.
Meidob volcanic field is a Holocene volcanic field in Darfur, Sudan. It is one of several volcanic fields in Africa whose origin is explained by the activity of mantle plumes and their interaction with crustal structures. Meidob lies at the southern margin of the Sahara.
Manzaz volcanic field is a volcanic field in Algeria. It consists of scoria cones with lava flows and has been active until recently.
Gharyan volcanic field is a volcanic field in northwestern Libya, with the towns of Bani Walid, Gharyan, Mizdah and Tarhunah close by.
Atakor volcanic field is a volcanic field in Algeria. It lies in the Hoggar mountains and consists of a variety of volcanic features such as lava flows and about 450 individual vents which create a spectacular scenery.
Bayuda volcanic field is a volcanic field in Sudan, within the Bayuda Desert. It covers a surface of about 11 by 48 kilometres and consists of a number of cinder cones as well as some maars and explosion craters. These vents have erupted aa lava flows.
The Honolulu Volcanics are a group of volcanoes which form a volcanic field on the island of Oʻahu, Hawaiʻi, more specifically in that island's southeastern sector and in the city of Honolulu from Pearl Harbor to the Mokapu Peninsula. It is part of the rejuvenated stage of Hawaiian volcanic activity, which occurred after the main stage of volcanic activity that on Oʻahu built the Koʻolau volcano. These volcanoes formed through dominantly explosive eruptions and gave rise to cinder cones, lava flows, tuff cones and volcanic islands. Among these are well known landmarks such as Diamond Head and Punchbowl Crater.
North Arch volcanic field is an underwater volcanic field north of Oahu, Hawaii. It covers an area of about 25,000 square kilometres (9,700 sq mi) and consists of large expanses of alkali basalt, basanite and nephelinite that form extensive lava flows and volcanic cones. Some lava flows are longer than 100 kilometres (62 mi).