Itshe Flint: impahla, kuchazwa umlando

Imibhalo emidala kunayo yonke emlandweni lwesintu kuhlangene ngokungenakuhlukaniswa ukuthuthukiswa komlilo, ukutadisha izakhiwo izitshalo ewusizo futhi ukufuywa kwezilwane. Kodwa into eyodwa zaziwubufakazi igama layo kuya nezikhathi ezimbili ezinkulu zomlando - Paleolithic kanye Neolithic. Kuyinto insengetsha itshe. Amaminerali ukuthi avunyelwe umuntu ukuba abe inkosi yakwa-imvelo.

Uma yahlulelwe ngokuya mineralogy, kwensengetsha awuyona into ekhethekile: yakhiwa cishe ngokuphelele Silica impahla, umbala wafaka nosawoti yezinye chemical compounds. Ngenxa ukwehluka lezi izinto, futhi anhlobonhlobo nemibandela kumiswa itshe Flint ungaba ifomu ezingalindelekile nombala.

Izazi zesayensi yokwakheka komhlaba bamchaza ngokuthi "ezinzima iyunithi eliqinile le" ifomu amorphous futhi cryptocrystalline of Silica.

Leli tshe yilo kukhanye esincane kakhulu, uma ubheka ke, ngokubeka phambi kukhona umthombo wokukhanya onamandla. Isikhathi esining impela ke ine imvelaphi organic, kusukela Silicon wawuyingxenye igobolondo imbaza.

Ngokuhamba izigidi zeminyaka inzika phansi kolwandle yasendulo lokuqala iguqulwe ibe Itshe Eliyigugu, sabe namanye amaminerali, kuhlanganise chalcedony. umbala wabo ezihlukahlukene ukuze lafika masinyane engcondvweni ayigugu. Okumangazayo ukuthi, kwensengetsha itshe ngezinye izikhathi basebenzisa kule indima, nakuba nobukhulu bayo ihlukile kakhulu.

Kwasukasukela abantu baye baqaphela ukuthi kungaba kalula emihle, bese luhlolokulinganisa ubulukhuni bayo, ngenxa lapho amaminerali zaqala ukusetshenziswa njengendlela material ngokwenza amathuluzi ngisho izitsha. Khona-ke abantu lofundziwe ke nquma kahle kwezingqimba ezinkulu ezinyakazayo ke itshe Flint waba isikhali esesabekayo, owawusekelwe amathiphu ayimikhonto nemicibisholo.

Uma ubheka slice wakhe ngesibonakhulu, ungabona izinaliti encane ulwandle izipanji, izinhlaka zamathambo radiolarian, iqabunga kulencane emangalisayo amancane bivalves.

Kumiswa Silicon Kuze kube namuhla. Wave futhi olwandle, nomfula, kanti imvula kancane kancane ugaye idwala, ethwele ochotshoziwe uthuli itshe olwandle. Iphinde iwe amakhemikhali okuyinto bathole aphume phezu emva nokuqhuma. Kancane kancane siya ku abahle Silica colloidal ukumiswa, okuyinto kuthé ikholomu amanzi. Ingxenye yalo ukumiswa isetshenziswa mollusk zasolwandle lenyama, iindumbu zabo kudingeka ukuze kwakhiwe igobolondo impahla. Kancane kancane kwakhiwa itshe insengetsha, incazelo elinikwe ngenhla.

Khumbula ukuthi thina wakhuluma "viscosity" leyo nto? It is uvunyelwe ukuba sisisebenzise womshini ngamathuluzi: cobblestones ujuqu ukuya izingcezu, futhi ukuhlukana, ukwakha ipuleti kucocekile.

Icutshungulwe Flint wanikeza umuntu inzuzo ngendlela engakaze ibonwe ngaphambili phezu kwezilwane zasendle. Futhi lapho ikhono lakhe kwaba evulekile at umthelela isiteleka izinhlansi ke abantu ivule umhlaba omusha - ezweni ukushisa nomlilo nokuvikeleka. Ukudla yalungiswa ku kwaba mnandi futhi sinempilo, kanye nezinto ezidla enamandla kakhulu babesaba ukushisa namalangabi yokukhanya.

Sithemba ukuthi ufunde ukubheka itshe Flint. indima yayo emlandweni impucuko yethu akunakuphikwa.