E nwere ọtụtụ apiti na ókèala nke mpaghara Leningrad, nke na-emetụta ụdị nke akụ ndị sitere n'okike. Nnyocha nke ndị ọkà mmụta ihe ochie egosiwo na mgbawa ugwu mgbawa n'oge gara aga mere ka o kwe omume ịmepụta ọtụtụ mineral nke a na-emepụta ugbu a ma ọ bụ na atụmanya nke igwupụta.
Mpaghara Leningrad bụ mpaghara bara ọgaranya, enwere limestone, bauxite, shale, phosphorite, aja, ụrọ, peat. Inyocha miri emi nke ihe ndị sitere n'okike na-ekpughe ọtụtụ akụ ndị sitere n'okike:
- gas;
- nkume mmecha;
- bitumen;
- ores magnetite.
Ihe omimi nke bauxites mere ka o kwe omume weputa ha n'uzo ghere oghe. A na-egosipụta oghere olulu nke akụrụngwa na ụgwọ ha. N'adịghị ka bauxite, shale mmanụ na phosphorites chọrọ nsị.
Iche iche nke mineral na mpaghara
Na mpaghara Leningrad enwere nnukwu ihe: granite, refractory na ụrọ brik, nzu nzu, ịkpụzi aja. Ihe onwunwe ndị a dị oke mkpa n'etiti ụlọ ọrụ na-ewu ụlọ. A na-egwupụta granite na Karelian Isthmus; ọ chọtala ngwa na ịrụcha ọrụ na iwu. A na-emepụta limestone n’ebe na-adịghị anya site n’obodo Pikalevo.
Swamps na-enye ohere maka mmịpụta mmepụta ihe nke peat, nke a na-eji arụ ọrụ ugbo na ụlọ ọrụ mmepụta ihe. Ebe akụrụngwa peat kachasị dị na ndịda na ọwụwa anyanwụ nke mpaghara ahụ. Ọnụnọ nke osisi ọhịa na-eme ka mpaghara Leningrad bụrụ nnukwu onye na-eweta osisi. Na North-West nke Russia, mpaghara ahụ nwere otu n'ime ebe ndị na-eduga n'ịgbutu osisi.
E nwere mpaghara 80 na mpaghara ahụ na-arụ ọrụ na-aga n'ihu. Steeti nwere nkwụnye ego 173 na mpempe akwụkwọ nhazi ya, nke naanị 46% na-emepe.
Enwere nnukwu mmiri iyi:
- ụgwọ sodium chloride bụ Sestroretsk;
- sọlfọ mmiri dị na Sablino;
- Polyustrovskie carbonate dị na St.
- Thernweta mmiri iyi dị nso na Luga (nkwụnye mmiri mmiri ọkụ).
Maka ụlọ ọrụ iko, mmịpụta ájá dị ezigbo mkpa, nke a na-eji agbaze ma mepụta ngwaahịa iko. Arụ ọrụ a site na 1860 ruo 1930. Ejiri ájá a mee kristal a ma ama. Mwepu nke ụrọ Cambrian na-acha anụnụ anụnụ n'ebe ugwu nke mpaghara ahụ. Otu nkwụnye ego agwụla, nke abụọ na-arụsi ọrụ ike site na igwu mmiri.
Mgbe ị na-emepe mineral, a na-eji ụdị nyocha ndị a: geotechnical; injinia na geodetic; injinia na akuku mmiri; gburugburu ebe obibi.
Enweghi ego
Enwere ego ọla edo na mpaghara ahụ, mana ha pere mpe ma habebebeghị. Nke a na-adọta nnukwu mmiri nke ndị na-achụ akụ akụ. Na mgbakwunye, enwere ego diamond, mana mmepe ha ka bụ naanị na ọrụ ahụ.
Hasgbè a nwere ọtụtụ ihe nkwụnye ego nke anaghị emepe emepe, ya bụ:
- ihe osise;
- manganese;
- igwe magnet;
- mmanụ.
Emeela mmepe ha maka ọdịnihu dị nso, nke a ga-enyekwa ohere ịbawanye ọnụ ọgụgụ ọrụ na ịbawanye mmefu ego mpaghara.
