labarai

Ma'adinan na cikin rukunin ma'adinan ma'adinan dutsen mai aman wuta a cikin nau'in lacustrine sedimentary diatomite. Babban ajiya ne da aka sani a China, kuma ma'aunin sa ba kasafai ba ne a duniya. Diatomite Layer yana musanya tare da laka Layer da silt Layer. Sashin geological yana samuwa a cikin tsaka-tsakin lokacin tsaka-tsakin tsaka-tsakin basalt eruption rhythm. Ana nuna ma'aunin yanki na ma'adinai a cikin tebur da ke ƙasa.

Ana sarrafa rarraba sarari na adibas ta tsarin paleo-tectonic. Babban ɓacin rai na dutsen mai aman wuta ya samo asali ne bayan fashewar dutsen mai yawa a cikin Himalayas ya ba da sarari don ajiye diatoms. Sassa daban-daban na tsohon kwandon ruwa da kuma yanayin yanayin karkashin ruwa a cikin tafkin ne kai tsaye ke sarrafa rarraba kudaden ajiya. Kogin da ke gefen rafin yana damuwa da koguna kuma yanayin da ake ciki ba shi da kwanciyar hankali, wanda ba shi da amfani ga rayuwa da tarin diatoms. A tsakiyar kwandon, saboda zurfin ruwa da rashin isasshen hasken rana, shi ma ba ya da amfani ga photosynthesis da ake bukata don rayuwa na diatoms. Hasken hasken rana, yanayin yanayi da abubuwan da ke cikin SiO2 a cikin yanki na canzawa tsakanin tsakiya da gefen duk suna taimakawa wajen yaduwa da tarawar diatoms, wanda zai iya samar da gawawwakin masana'antu masu inganci.

Jerin dutsen da ke ɗauke da tama shine Layer na Ma'anshan Formation Sedimentary, tare da yanki mai rarraba 4.2km2 da kauri na 1.36 ~ 57.58m. Ƙarƙashin ma'adinai yana faruwa a cikin jerin dutsen da ke ɗauke da tama, tare da ƙararrakin kari a tsaye. Cikakkun tsarin laka daga ƙasa zuwa sama shine: yumbu mai yumbu → yumbu diatomite → yumbu mai ƙunshe da diatomite → diatomite → yumbu mai ɗauke da diatom ƙasa → yumbu diatomite → diatom yumbu, akwai dangantaka a hankali a tsakaninsu. Cibiyar raye-raye tana da babban abun ciki na diatoms, yawancin yadudduka guda ɗaya, babban kauri, da ƙarancin yumbu; abun ciki na yumbu na sama da ƙananan rhythms yana raguwa. Akwai yadudduka uku a tsakiyar tama. Ƙananan Layer yana da kauri 0.88-5.67m, tare da matsakaicin 2.83m; Layer na biyu yana da kauri 1.20-14.71m, tare da matsakaicin 6.9m; Layer na sama shine Layer na uku, wanda ba shi da kwanciyar hankali, tare da kauri na 0.7-4.5m.

Babban ma'adinan ma'adinai na ma'adinai shine diatom opal, ƙaramin sashi wanda ke sake sakewa kuma ya canza zuwa chalcedony. Akwai ƙaramin adadin yumbu da aka cika tsakanin diatoms. Laka shine mafi yawan hydromica, amma kuma kaolinite da illite. Ya ƙunshi ƙananan ma'adanai masu lalacewa kamar ma'adini, feldspar, biotite da siderite. Hatsin Quartz sun lalace. An canza Biotite zuwa vermiculite da chlorite. Abubuwan sinadaran na ma'adinai sun haɗa da SiO2 73.1% -90.86%, Fe2O3 1% -5%, Al2O3 2.30% -6.67%, CaO 0.67% -1.36%, da kuma asarar ƙonewa na 3.58%-8.31%. An samo nau'ikan diatoms 22 a cikin yankin ma'adinai, fiye da nau'in 68, mafi rinjaye sune discoid Cyclotella da Cylindrical Melosira, Mastella da Navicula, da Corynedia a cikin tsari na Polegrass. Genus kuma na kowa. Na biyu, akwai jinsin Oviparous, Curvularia da sauransu.