Macdanta Afrika - ilaha dhaqaale oo muhiim ah

Africa ma aha oo kaliya waynaha, waxay caan ku tahay nooca kala iyo dhaqanka, taas waa soo jireenka ah ee qaaradda sahayda qani ku ah khayraadka dabiiciga ah. In aagga Equatorial waa qayb weyn oo ka mid ah qaaradda, kaas oo bixiya xaaladaha si mug leh koritaanka of kaymaha, jajabka mass of taas oo ah 10% ka mid ah aagga guud ee kaynta Dhulka. Wood - sheyga ugu muhiimsan ee laga dhoofiyey.

Africa oo kale oo waxaa loo arkaa inay trove khasnad lamadegaanka Sahara ah, moolka dheer oo qarin kaydka badan ee biyo nadiif ah. On qaaradda this yihiin webiyaasha ugu weyn ee caalamka, taas oo si hagaagsan u dhali magaca ilaha tamarta ee Africa.

Macdanta Afrika waa qeybiyeyaasha weyn ee ilaha dhaqaale ee shirkadaha ee ferrous iyo metallurgy non-ferrous, shirkadaha kiimiko caalamka oo dhan. Nedra Africa ay hodan ku yihiin phosphorite, chromite, titanium. Ugu weyn ee kaydka senti (uranium, Cobalt, copper, manganese) iyo macdanta iyo birta qaaliga ah (diamond, dahab) dacaladeeda diiradda on qaaradda this. Macdanta North Africa, kuwaas oo ah macdanta ku aasan, gaaska iyo saliidda, waxay leeyihiin ahmiyad caalamka. Koonfurta iyo Bartamaha Africa macdanta magmatic qiimeeyo - senti biraha ferrous cuntrooyinka iyo sidoo kale dheeman.

kayd Macdanta sababa formation of gargaarka qaarada Afrika ee. Waqooyiga, in ka sii badan dhulka iyo dagitaan, oo ka dhergeen badaha, si roobab sameeyay dhuxul, senti manganese. Bariga iyo Koonfurta Afrika wakiil plateaus iyo buuraleyda, oo taariikh ahaan la aasaasay meel dhaqdhaqaaqa joog iyo jiif ah madal ay, sidaas darteed qayb ka this waa hodan ku dheeman, dahab, senti uranium.

qaaradda waxa uu leeyahay sida xuduud ku qiyaasi karo in macdanta ee Africa on map ha kaga tagin meel, macno ahaan millimeter kasta oo meel bannaan oo ka kooban macdanta gaar ah. Africa caan ku tahay kayd ay ore, formation of taas oo dib taariikhda dhalashada ee Paleozoic ah. Currently, madal la kulmin ee dhulbaraha iyo koonfurta qaaradda, oo sidaas daraaddeed, goobahaas noqday fiirsashada of kayd ore. Thanks to this "wanaan" oo ka mid ah dhufto ee qadiimiga ah, dadka ku nool caalamka noqday kayd copper heli karaa Koonfur Afrika, Koonfurta Rhodesia waxaa soo koraya chromite, Nigeria lagu yaqaan qasacad iyo tungsten, Ghana - manganese, iyo jasiiradda Madagascar iyo sidoo kale ku siin karaan graphite ee caalamka oo dhan. Weli, Africans ku mahdisaanna kayd dahab ah oo Paleozoic ah. Waxaa laga yaabaa in meelaha qaar ka mid ah Africa iyo dibba dalalka reer galbeedka, laakiin berrinkii macdanta dahabka qaaradda, in wajiga of South Africa, dheer iyo si adag u haya jagada hoggaamineed.

formation Cambrian dhufto ee jidhadhka dhulka waxaa loo arkaa bilowga saareen mednosnogo suunka in la sameeyey macdanta ah sida in Africa sida copper, iyo waxa daasadda, Cobalt, lead, tungsten, oo waxay soo geliyeen in ay booska ugu horeeysa ee dunida. On horumarinta iyo wax soo saarka oo ka mid ah khayraadka kor ku xusan Africa waa labaad ee ugu weyn. Muddadan, qaaradda sameeyay kayd ah ore uranium iyo platina. In badda moolkeeda sameeyay of iron ore, laakiin by dhigaalka Cusbada badda, kuwaas oo fossils waxtar leh Afrika ka tirsan ka-fasal yar yahay.

Isgooyska ee Paleozoic iyo Mesozoic qaaradda madal kuwa dhulkuna waa la kulma muddo xasilloon la la'aanta ah ee dhaqdhaqaaqa madal jidhadhka dhulka, awood kayd sameeyay dhuxusha, taas oo si gaar ah ugu badan ee Koonfur Afrika, Rhodesia, Congo iyo Madagascar.

Sahara iyo inta banka Caraabaah Sudan Afrika waa ugu adag ee formation-dhismeedka, kaas oo maray gafafkanaga iyo outcrops dhagax weyn, qaadista iyo delamination ee aasaaska qadiimiga ah, kayd qiimeeyo oo bir ah, senti manganese iyo saliid.