Toka kāhuarau

I roto i te natura, i reira e maha ngā momo o toka: parataiao, kāhuarau me magmatic. Katoa o ratou tohu Pūhui etahi kohuke.

I roto i tēnei tuhinga ka aparau i tatou i roto i te taipitopito aha te toka kāhuarau. whakaahua tatou nga momo, ngā āhuatanga me ngā tikanga o te whakamahi i roto i te ahumahi.

Ko runga ake katoa, kia korero ai koe i taua e toka. whakamahia ana tēnei wā ki te kōrero mō ki te āhua matū o te pūhui e hanga e i roto i te kirinuku.

Kāhuarau toka Ko te hua o te rongo ki pāmahana teitei, me te pēhanga kaha i runga i te kohuke o te take mai magmatic parataiao ranei. E kore e te hanganga matū o ngā kohuke mamae huringa nui, engari whiwhi ratou i te kakano hou, me te hanganga.

He maha kohuke kāhuarau he tokauku rerekē (te aroaro o peka kikokore). Tenei āhuatanga tohu tikanga kohuke hanganga (i raro i te pēhanga). Taua kohuke i te kaha ki te wahi i ki te paraharaha.

Ki te tupu te tukanga o te faafariuraa etahi atu kohuke (kāhuarautanga) i raro i te mahi o te wera papatipu urutomo i te hohonu pāpaku, i roto i tenei take, ka whai hanganga rogovistuyu toka kāhuarau. Ua faahoho'ahia te reira i hornfelses (biotite, pyroxene, amphibolite) i hanga o paru.

Ko te tukanga o te kāhuarautanga (huringa) kia kia i raro ki tetahi Minerals - ngiha, parataiao takenga maopūroro ranei. Tetahi panoni i hanga i roto i te kamaka i te tikanga o recrystallization i roto i te āhua mārō. Ko te tohu o te huringa o nga kohuke tīmata taea tino rere, mai i te iti akatuke'anga ki ngā rerekētanga nui i roto i te hanganga me te āhua o te matatoka. He rerekē hoki te āhua o te kāhuarautanga. Ka taea e tupu te reira i te anake hiri iti, ranei kia whakaoti recrystallization o te kohuke.

toka kāhuarau katoa he hua ere tuarua. Tei runga i te tohu o te faafariuraa, i reira e rave rahi ngā momo o ngā kohuke whakawhiti:

• Te whakapā. whakatika te reira i te takahi o te tokarewa (whakataki i roto i te kirinuku o te whenua), me ona pāhekoheko ki te waipara. Kohuke o tenei momo e hanga e raro i te mana o te pēhanga, me te wera. pā ana taua pōhatu mapere, skarn, migmatite. Ko te nuinga o tioata, nui, me te hanganga slabosloistoe saccharoidal momo kāhuarautanga whakapā, ai preperpevaet te hanganga o kohuke huringa nui.
• Rohe (hohonu). e tukanga whakarerekē wahi i rire nui ki te pēhanga tiketike pāhekoheko, te pāmahana, me te fluids. Ko te hanganga mineralogical o te kohuke i roto i tenei take, e kore ahau mahi tonu. Uri tokauku tioata rerekē, hanganga kikī.
• Dynamo kāhuarautanga. puta te tukanga hurihanga i roto i te tuapapa i raro i te pēhanga teitei. I roto i te momo o ngā kohuke i hanga te rohe kaha o te tiango me hipi matatini. Enei matatoka e mylonites me ka-taklazity.

E kitea toka te tikanga kāhuarau i te natura i roto i te puka o uaua, whenei me te arotahi. maha pupuri ratou te ahua taketake o kohuke tupu, engari ka i roto i te whakapā ki te kohuke urutomo tokarewa kia kōhikohikotia āhua ai.

E whakamahia kohuke kāhuarau ao rite te whakapaipai, hanga me te rauemi whakapaipai (quartzite, mapere, te schist, te kāhuarau kanapa). Kei te whakamahia hoki ratou rite rauemi ahumahi raw (papa kiripaka, talc, me ētahi atu). Ko te āhua o te toka kāhuarau maha kei tata putunga o ngā kohuke, utu nui, me te kohatu āhua-utu nui (harariu, emerara, jade, kapakara, me ētahi atu).