ozi

Ebe a na-egwupụta ihe bụ nke mpaghara mgbawa ugwu mgbawa n'ụdị continental lacustrine sedimentary diatomite. Ọ bụ nnukwu nkwụnye ego a maara na China, ọnụ ọgụgụ ya dịkwa ụkọ n'ụwa. Ngwunye diatomite na-agbanwe na oyi akwa ụrọ na akwa silt. Ngalaba geological dị n'ime oge etiti oge n'etiti ụda mgbawa basalt. E gosipụtara stratum nke ebe a na-egwupụta ihe na tebụl n'okpuru.

A na-achịkwa nkesa oghere nke nkwụnye ego site na ụkpụrụ paleo-tectonic. Nnukwu ịda mbà n'obi nke ugwu mgbawa ugwu malitere mgbe ọnụ ọgụgụ dị ukwuu nke mgbawa ugwu mgbawa na Himalaya nyere ohere maka ntinye nke diatoms. Akụkụ dị iche iche nke ọdọ mmiri oge ochie na ihe osise dị n'okpuru mmiri dị na ọdọ mmiri na-achịkwa nkesa nke nkwụnye ego ozugbo. Osimiri na-akpaghasị akụkụ dịpụrụ adịpụ nke basin na gburugburu ebe obibi sedimentary adịghị eguzosi ike n'ihe, nke na-adịghị mma maka nlanarị na nchịkọta nke diatoms. N'etiti etiti basin, n'ihi mmiri miri emi na ìhè anyanwụ na-ezughị ezu, ọ dịghịkwa akwado photosynthesis dị mkpa maka ịdị ndụ nke diatoms. Ihe na-egbuke egbuke nke ìhè anyanwụ, gburugburu sedimentary na ọdịnaya SiO2 na mpaghara mgbanwe n'etiti etiti na nsọtụ bụ ihe niile na-akwado mgbasa na nchịkọta nke diatoms, nke nwere ike ịmepụta nnukwu ụlọ ọrụ mmepụta ihe.

Usoro nkume nke na-ebu ọla bụ oyi akwa nke Ma'anshan Formation, yana mpaghara nkesa nke 4.2km2 na ọkpụrụkpụ nke 1.36 ~ 57.58m. Igwe oyi akwa na-apụta n'usoro nkume nke na-ebu ore, nwere ụda pụtara ìhè na ntụzịaka kwụ ọtọ. Usoro ngwuri egwu zuru oke site na ala ruo n'elu bụ: ụrọ diatom → ụrọ diatomite → ụrọ nwere diatomite → diatomite Ebe etiti nke ụda ahụ nwere nnukwu ọdịnaya nke diatoms, ọtụtụ otu akwa akwa, nnukwu ọkpụrụkpụ, na ụrọ dị ala; ụrọ ọdịnaya nke elu na nke ala rhythms na-ebelata. Enwere akwa atọ n'ime oyi akwa etiti. Okpokoro nke ala bụ 0.88-5.67m, na nkezi nke 2.83m; oyi akwa nke abụọ bụ 1.20-14.71m oké, na nkezi nke 6.9m; oyi akwa nke elu bụ oyi akwa nke atọ, nke na-ejighị n'aka, na ọkpụrụkpụ nke 0.7-4.5m.

Akụkụ bụ isi nke ịnweta ọla bụ diatom opal, obere akụkụ ya na-emegharị ma gbanwee ghọọ chalcedony. Enwere obere ụrọ na-ejuputa n'etiti diatoms. Ụrọ na-abụkarị hydromica, kamakwa kaolinite na ililite. Nwere obere ọnụọgụ nke mineral ndị dị ka quartz, feldspar, biotite na siderite. Mkpụrụ ọka quartz emebiwo. Biotite agbanweela ka ọ bụrụ vermiculite na chlorite. Ngwakọta kemịkalụ nke ore na-agụnye SiO2 73.1%-90.86%, Fe2O3 1%-5%, Al2O3 2.30%-6.67%, CaO 0.67%-1.36%, na mfu ọkụ nke 3.58%-8.31%. Achọpụtala ụdị diatoms 22 na mpaghara ebe a na-egwupụta akụ, ihe karịrị ụdị 68, ndị kachasị bụ discoid Cyclotella na Cylindrical Melosira, Mastella na Navicula, na Corynedia n'usoro nke Polegrass. Genus bụkwa ihe a na-ahụkarị. Nke abuo, enwere genus Oviparous, Curvularia na ihe ndi ozo.