A canyon (Spanish: cañón; archaic British English spelling: cañon) or gorge is a deep cleft between escarpments or cliffs resulting from weathering and the erosive activity of a river over geologic time scales. Rivers have a natural tendency to cut through underlying surfaces, eventually wearing away rock layers as sediments are removed downstream. A river bed will gradually reach a baseline elevation, which is the same elevation as the body of water into which the river drains. The processes of weathering and erosion will form canyons when the river's headwaters and estuary are at significantly different elevations, particularly through regions where softer rock layers are intermingled with harder layers more resistant to weathering.
A canyon may also refer to a rift between two mountain peaks, such as those in ranges including the Rocky Mountains, the Alps, the Himalayas or the Andes. Usually, a river or stream carves out such splits between mountains. Examples of mountain-type canyons are Provo Canyon in Utah or Yosemite Valley in California's Sierra Nevada. Canyons within mountains, or gorges that have an opening on only one side, are called box canyons. Slot canyons are very narrow canyons that often have smooth walls.
Steep-sided valleys in the seabed of the continental slope are referred to as submarine canyons. Unlike canyons on land, submarine canyons are thought to be formed by turbidity currents and landslides.
Habari,
Kuliwahi kutokea madai yakisema kuwa Olduvai Gorge ipo nchini Kenya. Rosemary Odinga alisema Olduvai Gorge ipo Kenya, Tazama video hapa chini:
Je, mnaweza kutusaidia kuweka kumbukumbu sawa hili?
Kwanza nianze kwa kusema mimi si mpenzi mkubwa wa Rais wetu aliyepita, JPM.
Hata hivyo, pamoja na figisu nyingi za JPM katika mambo mbali mbali, mengine ambayo yalikuwa miradi ya upendeleo ulio wazi kimaeneo, katika mradi wa bwawa la umeme Stieglers alikuwa spot on.
Mradi wa ujenzi wa bwawa la...
Huu mradi wa maji ya kuleta umeme wa nyerere tumekuwa tukidanganywa kila siku kuwa utakamilika June 2022, kitu ambacho c Cha kweli hata kidogo, pia tukidanganywa Mwezi wa 11 maji yataanza kujazwa kwenye bwawa huu ni uongo mkubwa, kwanini nasema hivo
1. Njia za kupeleka maji kwenye mashine...
NINI TAFSIRI YA MEGAWATTS 2,115 ZA UMEME WA BWAWA LA MWALIMU NYERERE (Stiglers Gorge)?
Wengi tunaona na kusikia kuhusu habari ya utekelezaji wa mradi mkubwa wa uzalishaji umeme wa maji wa Megawatts 2115 kutoka kwenye Mto Rufiji, mradi uliobuniwa na Mwalimu Nyerere toka mwaka 1975 na sasa...
Kampuni ya nchini Misri inayomilikiwa na serikali, Arab Contractors imeshinda tenda ya kubuni/kusanifu na kujenga bwawa la Stiegler's Gorge katika maporomoko ya mto Rufiji.
Baada ya Kampuni hiyo kushinda tenda, Rais wa Misri, Abdel-Fattah al-Sisi amempigia simu Rais Magufuli na kutoa shukrani...
WAZIRI wa Nishati, Dk Medard Kalemani amesema kazi ya ujenzi wa mradi wa kuzalisha umeme kwa nguvu za maji ya Mto Rufi ji eneo la Stiegler’s Gorge, unatarajiwa kuanza Julai mwaka huu.
Dk Kalemani alisema jijini hapa jana kuwa hatua hiyo ya kuanza kwa mradi inatokana na kazi ya tathmini ya...
JamiiForums uses cookies to help personalise content, tailor your experience and to keep you logged in if you register.
By continuing to use this site, you are consenting to our use of cookies.