Chaman Fault (original) (raw)
The Chaman Fault is a major, active geological fault in Pakistan and Afghanistan that runs for over 850 km. Tectonically, it is actually a system of related geologic faults that separates the Eurasian Plate from the Indo-Australian Plate. It is a terrestrial, primarily transform, left-lateral strike-slip fault. The slippage rate along the Chaman fault system as the Indo-Australian Plate moves northward (relative to the Eurasian Plate) has been estimated at 10 mm/yr or more. In addition to its primary transform aspect, the Chaman fault system has a compressional component as the Indian Plate is colliding with the Eurasian Plate. This type of plate boundary is sometimes called a transpressional boundary.
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| dbo:abstract | The Chaman Fault is a major, active geological fault in Pakistan and Afghanistan that runs for over 850 km. Tectonically, it is actually a system of related geologic faults that separates the Eurasian Plate from the Indo-Australian Plate. It is a terrestrial, primarily transform, left-lateral strike-slip fault. The slippage rate along the Chaman fault system as the Indo-Australian Plate moves northward (relative to the Eurasian Plate) has been estimated at 10 mm/yr or more. In addition to its primary transform aspect, the Chaman fault system has a compressional component as the Indian Plate is colliding with the Eurasian Plate. This type of plate boundary is sometimes called a transpressional boundary. From the south, the Chaman fault starts at the triple junction where the Arabian Plate, the Eurasian Plate and the Indo-Australian Plate meet, which is just off the Makran Coast of Pakistan. The fault tracks northeast across Balochistan and then north-northeast into Afghanistan, runs just to the west of Kabul, and then northeastward across the right-lateral-slip Herat fault, up to where it merges with the Pamir fault system north of the 38° parallel. The Ghazaband and Ornach-Nal faults are often included as part of the Chaman fault system. South of the triple junction, where the fault zone lies undersea and extends southwest to approximately 10°N 57°E, it is known as the Owen Fracture Zone. While there is general agreement that the fault is slipping at a rate of at least 10 mm/yr, there is a report of volcanic rocks in Pakistan dated to 2 m.y. BP which have been offset such as to indicate a slip rate of 25–35 mm/yr. Offsets have been described throughout the fault in Pakistan that are young enough that "only the alluvium of the bottom of active dry washes is not displaced". The parallel mountain ranges of eastern Balochistan, (east to west) the Kirthar Mountains, the Khude Mountains, the Zarro Mountains, the Pab Mountains and the Mor Mountains, are a result of the compressional plate boundary and are aligned parallel to the Chaman fault movement. The fault itself is west of these ranges. (en) La faglia di Chaman è una grande e attiva faglia a trascorrimento (o "trasforme") sinistro che si estende per oltre 850 km in direzione nord-est/sud-ovest nei territori di Pakistan e Afghanistan. Tettonicamente si tratta in realtà di un sistema di faglie geologicamente correlate (di cui spesso in letteratura vengono considerate parte anche le faglie di Ghazaband e di Ornach-Nal) che separa la placca euroasiatica dalla parte occidentale della placca indo-australiana, e proprio il movimento di quest'ultima verso nord rispetto alla placca euroasiatica fa sì che lo slittamento presso la faglia di Chaman sia nell'ordine dei 10 mm all'anno se non di più. Le due placche in questione, però, non si stanno solo spostando lateralmente l'una rispetto all'altra, ma stanno anche convergendo l'una verso l'altra, e ciò fa sì che sulla faglia agisca non solo una componente trascorrente ma anche una componente compressiva, rendendola quindi una faglia transpressiva. (it) |
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| gold:hypernym | dbr:Fault |
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| rdfs:comment | The Chaman Fault is a major, active geological fault in Pakistan and Afghanistan that runs for over 850 km. Tectonically, it is actually a system of related geologic faults that separates the Eurasian Plate from the Indo-Australian Plate. It is a terrestrial, primarily transform, left-lateral strike-slip fault. The slippage rate along the Chaman fault system as the Indo-Australian Plate moves northward (relative to the Eurasian Plate) has been estimated at 10 mm/yr or more. In addition to its primary transform aspect, the Chaman fault system has a compressional component as the Indian Plate is colliding with the Eurasian Plate. This type of plate boundary is sometimes called a transpressional boundary. (en) La faglia di Chaman è una grande e attiva faglia a trascorrimento (o "trasforme") sinistro che si estende per oltre 850 km in direzione nord-est/sud-ovest nei territori di Pakistan e Afghanistan. Tettonicamente si tratta in realtà di un sistema di faglie geologicamente correlate (di cui spesso in letteratura vengono considerate parte anche le faglie di Ghazaband e di Ornach-Nal) che separa la placca euroasiatica dalla parte occidentale della placca indo-australiana, e proprio il movimento di quest'ultima verso nord rispetto alla placca euroasiatica fa sì che lo slittamento presso la faglia di Chaman sia nell'ordine dei 10 mm all'anno se non di più. Le due placche in questione, però, non si stanno solo spostando lateralmente l'una rispetto all'altra, ma stanno anche convergendo l'una verso (it) |
| rdfs:label | Chaman Fault (en) Faglia di Chaman (it) |
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| is dbo:wikiPageDisambiguates of | dbr:Chaman_(disambiguation) |
| is dbo:wikiPageWikiLink of | dbr:List_of_earthquakes_in_Pakistan dbr:2008_Ziarat_earthquakes dbr:2011_Dalbandin_earthquake dbr:2012_Afghanistan_earthquakes dbr:2013_Balochistan_earthquakes dbr:1983_Hindu_Kush_earthquake dbr:1991_Hindu_Kush_earthquake dbr:1992_Kohat_earthquake dbr:1935_Quetta_earthquake dbr:2021_Balochistan_earthquake dbr:Sulaiman_Mountains dbr:2002_Baltistan_earthquakes dbr:2002_Hindu_Kush_earthquakes dbr:Ab-i_Istada dbr:January_2022_Afghanistan_earthquakes dbr:June_2022_Afghanistan_earthquake dbr:Transform_fault dbr:September_2022_Afghanistan_earthquake dbr:Chaman_(disambiguation) |
| is foaf:primaryTopic of | wikipedia-en:Chaman_Fault |