- published: 30 May 2013
- views: 86564
A rift valley is a linear-shaped lowland between several highlands or mountain ranges created by the action of a geologic rift or fault. A rift valley is formed on a divergent plate boundary, a crustal extension, a spreading apart of the surface, which is subsequently further deepened by the forces of erosion. When the tensional forces were strong enough to cause the plate to split apart, a center block dropped between the two blocks at its flanks, forming a graben. The drop of the center creates the nearly parallel steeply dipping walls of a rift valley when it is new. That feature is the beginning of the rift valley, but as the process continues, the valley widens, until it becomes a large basin that fills with sediment from the rift walls and the surrounding area. One of the best known examples of this process is the East African Rift. On Earth, rifts can occur at all elevations, from the sea floor to plateaus and mountain range in continental crust or in oceanic crust. They are often associated with a number of adjoining subsidiary or co-extensive valleys, which are typically considered part of the principal rift valley geologically.
In order of specificity, Rift Valley can refer to:
A rift is a geological occurrence where the Earth's crust and lithosphere are being pulled apart.
Rift may also refer to:
In geology, a rift is a linear zone where the Earth's crust and lithosphere are being pulled apart and is an example of extensional tectonics.
Typical rift features are a central linear downfaulted depression, called a graben, or more commonly a half-graben with normal faulting and rift-flank uplifts mainly on one side. Where rifts remain above sea level they form a rift valley, which may be filled by water forming a rift lake. The axis of the rift area may contain volcanic rocks, and active volcanism is a part of many, but not all active rift systems.
Major rifts occur along the central axis of most mid-ocean ridges, where new oceanic crust and lithosphere is created along a divergent boundary between two tectonic plates.
Failed rifts are the result of continental rifting that failed to continue to the point of break-up. Typically the transition from rifting to spreading develops at a triple junction where three converging rifts meet over a hotspot. Two of these evolve to the point of seafloor spreading, while the third ultimately fails, becoming an aulacogen.
Great Rift may mean:
De Grote Slenk (ook bekend als de Oost-Afrikaanse slenk, Grote Afrikaanse Slenk of de Grote Riftvallei) is een riftvallei; een langgerekt stelsel van slenken, dat loopt van Syrië tot Mozambique over een totale lengte van 6400 km. De slenk varieert in breedte van 30 tot 100 km en in diepte van enkele honderden tot zelfs duizenden meters. In de geologie wordt een dergelijk stelsel van slenken een rift genoemd, een gebied waar twee tektonische platen uit elkaar bewegen. Oost-Afrika maakt deel uit van de continentale Afrikaanse plaat, maar is op dit moment aan het splitsen in 2 platen. Dit zijn de Nubische plaat in het westen en de Somalische plaat in het oosten. Omdat de riftvallei doorloopt in de Rode Zee tot aan Syrië, wordt ook de Arabische plaat tot het divergerende systeem gerekend. Deze...
For more, visit http://science.discovery.com | Nick heads to the Great African Rift Valley to study the largest tectonic rift on the planet.
Visit http://www.africanicons.co.za to see more about the book on African Icons. Renowned writer David Bristow and award-winning photographers Roger and Pat de la Harpe – longtime friends and business associates (authors of about 50 books individually as well as together) – have pooled their talents and visited Africa’s must-see places to share their insights with the world. This clip shows some of the attractions of the Great Rift Valley in Kenya that feature in the book. We stayed at the Great Rift Valley Lodge and Golf Resort in Kenya while researching and photographing this chapter: http://www.heritage-eastafrica.com
(Visit: http://www.uctv.tv/) East Africa is one of the most geologically intriguing places on the planet—a place where the African continent is literally ripping apart. Deep rift valleys, active volcanoes, and hot springs are dramatic evidence for the powerful forces deep within the earth that are slowly reshaping the continent. Join geochemist David Hilton on an adventure to the East African Rift Valley and learn how he and his colleagues utilize geologic samples to understand this dynamic region of our planet. Series: "Perspectives on Ocean Science" [5/2014] [Science] [Show ID: 27844]
Estratto da un documentario di Alberto Angela in cui si parla della Rift Valley. Qui la parte naturalistica in cui venivano mostrati tanti ambienti e animali delle savane delle foreste (tipici o rari) è stata omessa. Essendo un video pensato per una lezione di geografia sull'Africa per la scuola media, qui si parla solo della sua origine tettonica, degli esploratori che l'hanno percorsa alla ricerca delle sorgenti del Nilo, dei gorilla di montagna e dei primi ominidi che sono apparsi nell'Africa lungo la Rift Valley (australopitechi).
In this video, I compiled some info and pictures to demonstrate how the East African Rift Valley is formed.
● Buy at http://www.beatport.com/release/the-rift-valley/1136938 ● Sometimes, things can be worth waiting for, and The Rift Valley by Rebelski is a project that has lingered in the Cadenza psyche (and record boxes) for well over a year. Already a staple in the DJ sets of Luciano and other Cadenza personnel, the piece finally gets a full release with remixes from Lee Van Dowski, and Luciano himself this Summer. In its Original Mix, The Rift Valley is a short, multi-instrumental piece, backed with a full choir, whose soaring voices go panoramic over the light and simple drum programming. Cadenza boss Luciano weighs in with a delicate remix, building the percussion and instrumentation before ushering in the vocals, underpinned with an organic synth line, with care not to clutter the remix bu...
● Buy at http://www.beatport.com/release/the-rift-valley/1136938 ● Sometimes, things can be worth waiting for, and The Rift Valley by Rebelski is a project that has lingered in the Cadenza psyche (and record boxes) for well over a year. Already a staple in the DJ sets of Luciano and other Cadenza personnel, the piece finally gets a full release with remixes from Lee Van Dowski, and Luciano himself this Summer. In its Original Mix, The Rift Valley is a short, multi-instrumental piece, backed with a full choir, whose soaring voices go panoramic over the light and simple drum programming. Cadenza boss Luciano weighs in with a delicate remix, building the percussion and instrumentation before ushering in the vocals, underpinned with an organic synth line, with care not to clutter the remix bu...
De Grote Slenk (ook bekend als de Oost-Afrikaanse slenk, Grote Afrikaanse Slenk of de Grote Riftvallei) is een riftvallei; een langgerekt stelsel van slenken, dat loopt van Syrië tot Mozambique over een totale lengte van 6400 km. De slenk varieert in breedte van 30 tot 100 km en in diepte van enkele honderden tot zelfs duizenden meters. In de geologie wordt een dergelijk stelsel van slenken een rift genoemd, een gebied waar twee tektonische platen uit elkaar bewegen. Oost-Afrika maakt deel uit van de continentale Afrikaanse plaat, maar is op dit moment aan het splitsen in 2 platen. Dit zijn de Nubische plaat in het westen en de Somalische plaat in het oosten. Omdat de riftvallei doorloopt in de Rode Zee tot aan Syrië, wordt ook de Arabische plaat tot het divergerende systeem gerekend. Deze...
For more, visit http://science.discovery.com | Nick heads to the Great African Rift Valley to study the largest tectonic rift on the planet.
Visit http://www.africanicons.co.za to see more about the book on African Icons. Renowned writer David Bristow and award-winning photographers Roger and Pat de la Harpe – longtime friends and business associates (authors of about 50 books individually as well as together) – have pooled their talents and visited Africa’s must-see places to share their insights with the world. This clip shows some of the attractions of the Great Rift Valley in Kenya that feature in the book. We stayed at the Great Rift Valley Lodge and Golf Resort in Kenya while researching and photographing this chapter: http://www.heritage-eastafrica.com
(Visit: http://www.uctv.tv/) East Africa is one of the most geologically intriguing places on the planet—a place where the African continent is literally ripping apart. Deep rift valleys, active volcanoes, and hot springs are dramatic evidence for the powerful forces deep within the earth that are slowly reshaping the continent. Join geochemist David Hilton on an adventure to the East African Rift Valley and learn how he and his colleagues utilize geologic samples to understand this dynamic region of our planet. Series: "Perspectives on Ocean Science" [5/2014] [Science] [Show ID: 27844]
Estratto da un documentario di Alberto Angela in cui si parla della Rift Valley. Qui la parte naturalistica in cui venivano mostrati tanti ambienti e animali delle savane delle foreste (tipici o rari) è stata omessa. Essendo un video pensato per una lezione di geografia sull'Africa per la scuola media, qui si parla solo della sua origine tettonica, degli esploratori che l'hanno percorsa alla ricerca delle sorgenti del Nilo, dei gorilla di montagna e dei primi ominidi che sono apparsi nell'Africa lungo la Rift Valley (australopitechi).
In this video, I compiled some info and pictures to demonstrate how the East African Rift Valley is formed.
● Buy at http://www.beatport.com/release/the-rift-valley/1136938 ● Sometimes, things can be worth waiting for, and The Rift Valley by Rebelski is a project that has lingered in the Cadenza psyche (and record boxes) for well over a year. Already a staple in the DJ sets of Luciano and other Cadenza personnel, the piece finally gets a full release with remixes from Lee Van Dowski, and Luciano himself this Summer. In its Original Mix, The Rift Valley is a short, multi-instrumental piece, backed with a full choir, whose soaring voices go panoramic over the light and simple drum programming. Cadenza boss Luciano weighs in with a delicate remix, building the percussion and instrumentation before ushering in the vocals, underpinned with an organic synth line, with care not to clutter the remix bu...
● Buy at http://www.beatport.com/release/the-rift-valley/1136938 ● Sometimes, things can be worth waiting for, and The Rift Valley by Rebelski is a project that has lingered in the Cadenza psyche (and record boxes) for well over a year. Already a staple in the DJ sets of Luciano and other Cadenza personnel, the piece finally gets a full release with remixes from Lee Van Dowski, and Luciano himself this Summer. In its Original Mix, The Rift Valley is a short, multi-instrumental piece, backed with a full choir, whose soaring voices go panoramic over the light and simple drum programming. Cadenza boss Luciano weighs in with a delicate remix, building the percussion and instrumentation before ushering in the vocals, underpinned with an organic synth line, with care not to clutter the remix bu...
(Visit: http://www.uctv.tv/) East Africa is one of the most geologically intriguing places on the planet—a place where the African continent is literally ripping apart. Deep rift valleys, active volcanoes, and hot springs are dramatic evidence for the powerful forces deep within the earth that are slowly reshaping the continent. Join geochemist David Hilton on an adventure to the East African Rift Valley and learn how he and his colleagues utilize geologic samples to understand this dynamic region of our planet. Series: "Perspectives on Ocean Science" [5/2014] [Science] [Show ID: 27844]
Documentary about the Lakes of the Great rift Valley in East Africa. The Great Rift Valley is part of a huge geological fault in East Africa. This fascinating deep scar in the Earth’s crust that divides Kenya in a north-south direction, extends for nine thousand kilometres within a wild and seemingly endless landscape. The fault is particularly famous for its soda, alkaline and freshwater lakes such as Lake Naivasha that is located a hundred kilometres from Nairobi. As with many other lakes in the Great Rift Valley, with more than four hundred bird species Lake Naivasha is a true paradise among ornithologists. The tranquillity of the lake can be quite deceptive and the Massai name of the lake, En-Aiposha, meaning ‘back and forth’, is an indication of how turbulent Naivasha can sometime...
Wade deve difendersi quest'oggi dai killer che popolano la Rift Valley, una vasta formazione geologica che si estende dalla Siria al Mozambico. In bocca al lupo Jeremy!
🌎 Rio Nilo Selvagem do Rift Valley ao Egito - Documentário Dublado HD http://www.megatimes.com.br/ http://www.klimanaturali.org/
Платящие сайты вывожу деньги каждый день от 100 рублей и выше ссылки для регистрации : http://goo.gl/fncG2E , http://goo.gl/gKpeus , http://goo.gl/3zpwkI , http://goo.gl/bApX4B , http://goo.gl/1R1bT1 , http://goo.gl/hSKgwM . Начни играть в Warface! Регистрируйся и забирай свой первый подарок — отличное оружие и VIP-ускоритель: https://goo.gl/s705wF Начни играть в Пирамидальная эра! Регистрируйся и забирай свой первый подарок: http://goo.gl/Q1D2lS Начни играть в RiotZone! Регистрируйся и забирай свой первый подарок http://riot.mail.ru/?r=DinWincester R315316458215 - на донат в Warface!!!
Rift Valley Politics #CitizenExtra Citizen TV is Kenya's leading television station commanding an audience reach of over 60% and in its over 12 years of existence as a pioneer brand for the Royal Media Services (RMS), it has set footprints across the country leaving no region uncovered. This is your ideal channel for the latest and breaking news, top stories, politics, business, sports, lifestyle and entertainment from Kenya and around the world. Follow us: http://citizentv.co.ke https://twitter.com/citizentvkenya https://www.facebook.com/Citizentvkenya https://plus.google.com/+CitizenTVKenya https://instagram.com/citizentvkenya
Subscribe to our channel http://bit.ly/AJSubscribe Subscribe to our channel http://bit.ly/AJSubscribe On this week's earthrise: Saving Kenya's forests; using seawater to grow food; greening Los Angeles; and Oslo - City of the Future. At Al Jazeera English, we focus on people and events that affect people's lives. We bring topics to light that often go under-reported, listening to all sides of the story and giving a 'voice to the voiceless.' Reaching more than 270 million households in over 140 countries across the globe, our viewers trust Al Jazeera English to keep them informed, inspired, and entertained. Our impartial, fact-based reporting wins worldwide praise and respect. It is our unique brand of journalism that the world has come to rely on. We are reshaping global media and cons...
The Omo Valley, situated in Africa’s Great Rift Valley, is home to an estimated 200,000 isolated peoples who have lived there for millennia. Amongst them are 1,000 to 3,000 Karo tribe who dwell on the eastern banks of the Omo river and practise flood retreat cultivation, growing sorghum, maize and beans.
You come back to me sans subterfuge
As deluge clings to parched desert sands
It's way too much and too fast
Aghast the rivers flashed flood
And the waters are 33 grasping hands deep
To have and to keep
To hold and to know
To bring down the pomp and glamour
And burn change the three ring show
With the big top all aglow
The Circus Maximus is the poignant kiss
Well what's become of
Stuttered to no avail and the mast and sail
Inflates as billow we fall upon the pillow of grass
Me and this fallible lass
With up skirt and down dress
With arched curves we confess
We're omnivoric whores
We're human stars amongst scores
We're gluttonous fasters
We're servants and we're masters
We're healed sores gaping fresh anew
Like whatever plasters the sobered glue
Of red white deepest black and blue
Oh fuck the onslaught slew the spirit flew
Just to test it's wings and rally
Despite hoops and flaming rings