Ol Doinyo Lengai

**Ol Doinyo Lengai (Oldoinyo Lengai),** "Dutsen Allah" a cikin yaren Maasai,  wani dutse ne mai aman wuta da ke cikin Gregory Rift, kudu da tafkin Natron a cikin yankin Arusha na Tanzaniya, Afirka. Wani ɓangare na tsarin volcanic na Gabashin Afirka Rift, yana samar da,lava na natrocarbonatite na musamman. Fashewar Ol Doinyo Lengai a shekara ta 1960 ya haifar da binciken binciken kasa wanda a karshe ya tabbatar da ra'ayin cewa dutsen carbonatite, ya samo asali ne daga magma .  

## Geology
Ol Doinyo Lengai na musamman ne a tsakanin tsaunukan tsaunuka masu aiki a cikin cewa yana samar da lava na natrocarbonatite,wani abu na musamman na carbonatite mai aman wuta.Wasu tsofaffin tsaffin tsaunukan carbonatite suna nan kusa, gami da Homa Mountain .

### Lawa
Ganin cewa yawancin lavas suna da wadata a cikin ma'adanai na silicate, lava na Ol Doinyo Lengai shine carbonatite. Yana da wadata a cikin ƙarancin,sodium da potassium,carbonates, nyerereite da gregoryte ,Saboda wannan abun da ba a saba gani ba, lava yana fashewa a ƙananan yanayin zafi kusan  . Wannan zafin jiki yana da ƙasa sosai har da narkakken lava yana bayyana baƙar fata a cikin hasken rana, maimakon samun jajayen haske gama gari ga mafi yawan lavas. Hakanan ya fi ruwa fiye da silicate lavas, sau da yawa ƙasa da danko fiye da ruwa. Ma'adinan sodium da potassium carbonate na lavas da suka fashe a Ol Doinyo Lengai ba su da kwanciyar hankali a saman duniya kuma suna da saurin saurin yanayi, suna juyawa da sauri daga baki zuwa launin toka. Sakamakon yanayin dutsen mai aman wuta ya sha bamban da kowane irin na duniya.

## Ilimin halittu
Tokar carbonatite da aka bazu a kan wuraren ciyayi da ke kewaye da ita tana kaiwa ga wurin kiwo na musamman, mai wadatuwa. Wannan ya sa yankin ya zama muhimmin mataki a kan ƙauran daji na shekara-shekara, inda ya zama gidan gandun daji na haihuwar maruƙa dubu da,yawa.

## Ayyukan fashewa

### 1883-1915
Rikodin fashewa a kan dutsen ya kasance a 1883. An yi rikodin yawo tsakanin 1904 zuwa 1910 da tsakanin 1913 da,1915. 

### 1917
Wata babbar fashewa a watan Yunin 1917 ta ajiye toka mai aman wuta har zuwa  ba.

### 1926
Wani fashewa ya faru na watanni da yawa a cikin 1926. 

### 1940
Wani fashewa tsakanin Yuli da Disamba 1940 ya zubar da toka har zuwa Loliondo,  ba. 

### 1950s
An ga wasu ƙananan fashewar lava a cikin 1954, 1955, da 1958. 

### 1960s
An ga ƙananan fashewar lava a farkon shekarun 1960.

Babban fashewa ya faru a ranar 14 ga Agusta 1966. Masana ilimin kasa JB Dawson da GC Clark sun ziyarci rafin mako guda bayan haka kuma sun ba da rahoton ganin "launi mai kauri na bakar ash" wanda ya tashi kusan  sama da dutsen mai aman wuta kuma ya zarce zuwa arewa zuwa tafkin Natron. Lokacin da suka haura mazugi mai siffar mazugi, sun ba da rahoton ganin ci gaba da fitar da iskar gas da toka mai launin toka da kura daga tsakiyar ramin.

### 2007
Ayyukan aman wuta a dutsen ya haifar da girgizar ƙasa a kullum a Kenya da Tanzaniya daga 12 ga Yuli 2007 zuwa 18 ga Yuli 2007 da ƙarfe 8.30 na dare a Nairobi . Girgizar kasa mafi ƙarfi ta auna 6.0 akan ma'aunin Richter . Masana ilimin kasa sun yi zargin cewa karuwar girgizar kasa ba zato ba tsammani alama ce ta motsin magma ta cikin Ol Doinyo Lengai. Dutsen dutsen ya barke ne a ranar 4 ga Satumbar 2007, inda ya aika da toka da tururi a kalla  guguwar iska da rufe gefen arewa da yamma cikin ruwan lafa sabo.

### 2008
Fashewar 2007 ta ci gaba da ɗan lokaci zuwa 2008. A karshen watan Fabrairu an ba da rahoton cewa ana taruwa, tare da tashin hankali a ranar 5 ga Maris. Lokacin rashin aiki ya biyo bayan fashewar abubuwa a ranakun 8 da 17 ga Afrilu. Ayyukan fashewa sun ci gaba har zuwa ƙarshen Agusta 2008. Ziyarar taron kolin a watan Satumban 2008 ya gano cewa hayakin lava ya sake dawowa daga bututun ruwa guda biy, a kasan sabon ramin. Ziyarar da aka yi a ramin a watan Maris/Afrilu 2009 ya nuna cewa da alama wannan aikin ya ƙare. 

### 2010
A watan Oktoban 2010, an dauki hoton rafi guda biyu daban-daban da wani karamin,tafkin lava a cikin wani jirgin sama.

### 2013
Dutsen mai aman wuta ya sake dawo da kwararar lava na natrocarbonatite wanda ya fara cika babban ramin daga fashewar 2007-2008. Tun daga watan Yulin 2013, akwai babban hornito mai aiki a gefen yammacin dutsen. A cikin watan Yuni, mazauna kusa da dutsen sun ba da rahoton girgizar kasa da dama. Ba za a iya shiga sabon ramin ba kuma masu hawan dutse suna hango cikinsa lokaci-lokaci.

## Gallery

File:Aerial view of Ol Doinyo Lengai erupting in 2008.jpg|Ol Doinyo Lengai ya barke a cikin Maris 2008.
File:Ol Doinyo Lengai After Explosive Eruptions.jpg|Ol Doinyo Lengai bayan fashewar wani abu mai fashewa.
File:Plume from Ol Doinyo Lengai.jpg|Hoton dutsen mai aman wuta yana aika da toka da tururi zuwa kudu.
File:OldoinyoLengaiAir.jpg|Hoton iska na Oldoinyo Lengai a cikin 2011.
File:Ol Doinyo Lengai.jpg|Ol Doinyo Lengai a cikin Oktoba 2011.
File:Oldoinyolengai.jpg|Hoton fashewar 1966
File:Lava lengai.jpg|Ƙunƙarar lava a cikin ramin Ol Doinyo Lengai.
File:Crater of Ol Doinyo Lengai (Jan 2011).jpg|Crater na Ol Doinyo Lengai a cikin Janairu 2011.


## Duba kuma

* Jerin duwatsu masu aman wuta a Tanzaniya

## Notes

## Nassoshi

## Hanyoyin haɗi na waje

* ol Ol Doinyo Lengai a nationalgeographic.com
* Ol Doinyo Lengai a Stromboli Kan layi
* Ol Doinyo Lengai a Duniyar Volcano
* Jami'ar St Lawrence ''Oldoinyo Lengai'' 
* ''Fred Belton's Ol Doinyo Lengai site''
* ''Hotunan Ol Doinyo Lengai 2001''
* Gano Volcano ''Ol Doinyo Lengai Volcano, Tanzaniya''
* Bidiyon narkakkar carbonatite lava ya barke a dutsen mai suna Ol Doinyo Lengai