Flint pob zeb: cov ntaub ntawv, txhais lub keeb kwm ntawm

Lub hiob keeb kwm ntawm tib neeg yog inextricably txuas nrog rau txoj kev qhov hluav taws kub, kawm lub thaj chaw ntawm tseem ceeb nroj tsuag thiab cov domestication ntawm cov tsiaj. Tab sis tsuas yog ib yam muab nws lub npe mus rau lub ob tug poj keeb kwm sij hawm - Paleolithic thiab Neolithic. Nws yog ib lub pob zeb pob zeb uas tawv. Mineral uas tso cai rau ib tug neeg los ua tus huab tais ntawm qhov.

Yog hais tias txiav txim nyob rau hauv cov nqe lus ntawm mineralogy, lub pob zeb uas tawv yog tsis muaj dab tsi tshwj xeeb: nws yog yuav luag tag li ntawm silica khoom, xim infused ntsev ntawm lwm yam tshuaj tebchaw. Vim muaj ntau haiv neeg ntawm cov tshuaj, thiab ib tug ntau yam ntawm tej yam kev mob ntawm tsim ntawm pob zeb uas tawv pob zeb yuav muaj feem ntau npaj txhij txog daim ntawv thiab xim.

Geologists piav nws raws li "nyuaj check unit" amorphous thiab cryptocrystalline daim ntawv ntawm silica.

Lub pob zeb no yog heev me ntsis ci, Yog hais tias koj saib nyob rau nws, muab nyob rau hauv pem hauv ntej ntawm ib tug muaj zog lub teeb qhov chaw. Heev feem ntau nws muaj ib tug organic keeb kwm, vim silicon yog ib feem ntawm lub npliag deg plhaub.

Nyob lab ntawm xyoo txo nyob rau hauv qab ntawm ancient seas yog thawj hloov dua siab tshiab rau hauv ib qho opal, thiab ces nyob rau hauv lwm yam minerals, nrog rau cov chalcedony. Lawv yog xim li ntawd, ntau yam kev sau uas tam sim ntawd tuaj mus rau lub siab yeej gems. Oddly, lub pob zeb pob zeb uas tawv tej zaum kuj siv nyob rau hauv no luag hauj lwm, txawm hais tias nws tau txais yog sib txawv heev.

Ib zaug thaum ib lub sij hawm cov neeg tau pom hais tias nws yuav ua tau yooj yim polished, thiab ces soj ntsuam thiab nws cov hardness, vim uas cov mineral pib yuav tsum tau siv raws li ib tug cov ntaub ntawv uas ua cov cuab yeej thiab txawm tais diav. Ces cov neeg kawm nws zoo zoo tsuav thiab zom, ces ib tug pob zeb uas tawv pob zeb los ua ib tug formidable riam phom, embodied nyob rau hauv lub tswv yim ntawm hmuv rau cov tibneeg thiab xib xub.

Yog hais tias koj saib nyob rau ntawm nws daim nyob rau hauv ib tug tshuab kuaj kab mob, koj yuav saib tau me me koob ntawm hiav txwv lub paj rwb, radiolarian skeletons, qhov tsawg tshaj plaws nplooj incredibly me me bivalves.

Tsim kom muaj pob zeb ntais yog hnub no. Wave thiab tidal, dej thiab nag maj zom pob zeb, nqa crushed pob zeb plua tshauv nyob deb nyob rau hauv lub hiav txwv. Nws kuj poob tshuaj uas tau pom tawm nyob rau hauv tus nto tom qab eruptions. Maj mam peb yuav mus rau hauv Superfine lub silica colloidal ncua kev kawm ntawv, uas hangs nyob rau hauv cov dej kem. Part ntawm no ncua kev kawm ntawv yog siv marine mollusks thiab protozoa, uas nws lub cev yuav tsum tau rau kev tsim kho ntawm lub plhaub khoom. Maj mam tsim pob zeb pob zeb uas tawv, qhov kev piav qhia tau raug muab saum toj no.

Nco ntsoov yuav ua li cas peb tham txog lub "viscosity" ntawm cov khoom? Nws yog tau tso cai rau siv nyob rau hauv qhov siv thiab ua cov pob zeb cov cuab yeej: cobblestones rau tej yam tsis mus ua tej dwb daim, thiab split, txoj kev ua ib zoo huv si phaj.

Nws yog ua pob zeb uas tawv muab rau tib neeg ib unprecedented kom zoo dua li cov tsiaj qus. Thiab thaum nws muaj peev xwm yog qhib tej yam strike sparks, ces cov neeg tau qhib ib tug tshiab lub ntiaj teb no - ib tug ntiaj teb no ntawm tshav kub thiab hluav taws thiab kev ruaj ntseg. Cov zaub mov uas twb npaj rau nws yog cua thiab noj, thiab feem ntau haib txhom ntshai ntawm lub tshav kub thiab nplaim taws ntawm lub teeb.

Peb cia siab tias koj tau kawm yuav ua li cas mus nrhiav tej zeb ntais pob zeb. Nws lub luag hauj lwm nyob rau hauv lub keeb kwm ntawm peb kev vam meej yog undeniable.