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VULQON CHIST?

VULQONHO

Harorati on to + 1500°S merasad, dar sathi zamin 900-1200°S tashkil mequnad va ohista ohista khunuk meshavad.

Naqshai tarkibi vulqon khele sodda ast. Asositarin qismathoi vulqon az kura, dahana va tanura iborat meyoband. Qura joest, ki dar on magmai ziyod shakl megi­rad. In magma ba bolo tavassuti dahana harakat mekunad. Hamin tariq dahana – in majroest, ki kuraro bo sathoi zamin mepayvandad. Dahana az hisobi magmai dar roh khunukshuda shakl megirad va ba andozai nazdik shudan ba sathi Zamin tang megardad. Va qismati savvum tanura -in chuquriest dar qismati boloii vulqon, ki shakli piyolaro dorad.

Dar makoni joygirshavii magma, guzaronidani mushohidaho bisyor dushvor meboshad. Hangomi otashfishonii vulqon, magmai ba sathi zamin partobshuda, badi bukhor gardidani gazho ba gudoza tabdil meyobad. Farqiyati magma az gudoza – nabudani gazho ba shumor meravad.

VULQONHOVulqonho az rui zamoni faoliyatashon ba du guruh taqsimbandi megardand: amalkunanda (faol) va khomush (jadvali 7).

Tasnifi (klassifikasiyam) vulqonho

Amalkunanda (faol) Hamesha yo dar tuli muddati muayan seli gudoza, gaz, but va tikkahoi jinshoi kuhiro partob mekunand.
Homush Faoliyat nadorand v a mubtalo ba bodlesand.

Vulqonhoi amalkunanda (faol) dar har zamoni muayan jinsi kuhii iy- dokhtashuda, khokistar, gaz va sanghoro partob mekunand. CHaro, ki dar poini in unsurho, qurai magmatikii ba yak otashdoni buzurg monand voqe gardidaast. Dar in otashdon jinshoi kuhi gudokhtashuda ba gudozai otashini moeshakl tabdil me- yoband.

Vulqonhoi khomush dar zamonhoi khele qadim faol budand. Qura dar zeri onho kayho khomush gardidaast va khudi onho chunon kharob gardidaand, ki tanho tahqiqoti geologho nishonahoi faoliyati vulqonii qadimiro kashf mekunand . In vulqonho na tanho ba relef, balki ba shaklgirii pushishi khoki- rastani va faoliyati hayotii odamon niz tasir meguzorand.

Ahamiyati vulqonho baroi khojagidori niz bisyor kalon ast. Dar bisyor joyho ashyohoi sakhtshudai vulqony, chun kandanihoi foidanok mavridi istifoda qaror doda meshavand – 1udozai bazalti baroi istehsoli masnuoti izolyatsiony, rekhtagary, kislotatobovar va inchunin ba sifati ashyoi sokhtmoni va rohsozi is­tifoda megardad. Baze namudhoi tufsangi vulqoni baroi istehsoli sement va ba sifati sangi sokhtmoni mavridi istifoda qaror megirand.

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