Indima Yamadwala Angcolile Emjikelezweni Wekhabhoni
Umhlaba uyindawo eyinkimbinkimbi futhi eguquguqukayo ehlanganisa imijikelezo eyahlukene ye-geochemical, enye yayo umjikelezo wekhabhoni. Umjikelezo wekhabhoni uchungechunge lwezinqubo lapho ikhabhoni ihamba khona emoyeni, i-lithosphere, i-hydrosphere, kanye ne-biosphere. Amatshe e-sedimentary adlala indima ebalulekile kulo mjikelezo, yize evame ukuxoxwa kancane kunendima yezinto eziphilayo ze-photosynthetic noma amafutha e-fossil. Lesi sihloko sizohlola indima yamatshe e-sedimentary emjikelezweni wekhabhoni ngokujulile, kusukela ekwakhekeni kwawo kuya emnikelweni wawo ekugcineni nasekukhululweni kwekhabhoni.
Ukwakheka Kwamadwala Asendle
Inqubo yokwakheka kwamadwala angaphansi komhlaba iqala ngokuguguleka kwamatshe ebusweni boMhlaba. Ukuguguleka kwamakhemikhali kanye nokwenyama kuhlukanisa amatshe abe yizinhlayiya ezincane, njengesihlabathi, udaka, nobumba. Izakhi zamakhemikhali, okuhlanganisa nekhabhoni, zingakhishwa phakathi nale nqubo. Lezi zinhlayiya ezingaphansi komhlaba zibe sezithuthwa yizinto ezahlukahlukene ezifana namanzi, umoya, noma iqhwa bese zifakwa ezingqimbeni ezintsha. Ngokuhamba kwesikhathi, lezi zingqimba ziyagqitshwa, zihlanganiswe, futhi zidlule ekukhuleni, ekugcineni zakha amadwala angaphansi komhlaba.
Cishe u-75% wobuso boMhlaba umbozwe ngamatshe acwebezelayo, okuyizindawo zokugcina eziyinhloko zamakhemikhali ahlukahlukene ekhabhoni, okuhlanganisa ikhabhoni ephilayo evela ezinsaleleni zezinto eziphilayo ezingcwatshwe kanye nekhabhoni enga-organic ngesimo samaminerali ekhabhoni.
Amatshe Asedimentary Njengesitoreji Sekhabhoni
Amatshe asematsheni asebenza njengezindawo zokugcina ikhabhoni, kokubili ngezindlela eziphilayo kanye nezinga-organic. Lawa matshe agcina ikhabhoni isikhathi eside kakhulu, ngokuvamile izigidi kuya ezigidigidini zeminyaka.
1. Ikhabhoni Engokwemvelo
– Izinsalela zezitshalo nezilwane ezingcwatshwe enhlabathini zingagcina seziphenduke amafutha asetshenziswa njengelahle, uphethiloli, kanye negesi yemvelo ngezinqubo zokwanda kwezakhi zofuzo kanye nokuguquka kwesimo.
– Imithungo yamalahle iyisibonelo esivamile samadwala angaphansi komhlaba agcina inani elikhulu lekhabhoni ephilayo. Amalahle akhiwa ngezinqwaba ezinkulu zezinto eziphilayo, njengezinsalela zezitshalo, ezingcwatshwe ngaphansi kwezimo ze-anaerobic (ezingenayo i-oxygen) futhi zicindezelwe eminyakeni eyizigidi.
2. Ikhabhoni Engeyona Engokwemvelo
– Ikhabhoni ingagcinwa futhi emadwaleni angcolile njengamaminerali e-carbonate njenge-calcite (CaCO3) noma i-dolomite (CaMg(CO3)2).
– Ukwakheka kwamatshe e-carbonate njenge-limestone ne-dolomite kuvame ukwenzeka ezindaweni zasolwandle ezingajulile, lapho ama-ion e-carbonate nama-ion e-calcium ebopha futhi ewa.
Amatshe Athuthwayo Ekukhishweni Kwekhabhoni
Ngaphezu kokusebenza njengendawo yokugcina izinto, amatshe angaphansi komhlaba nawo adlala indima ekukhululeni ikhabhoni emuva ohlelweni loMhlaba. Kunezindlela eziningana lapho ikhabhoni ikhishwa khona emadwaleni angaphansi komhlaba:
1. Ukukhishwa nge-Chemical Weathering
– Inqubo yokuguquka kwamakhemikhali ayigcini nje ngokwakha amatshe angaphansi komhlaba kodwa futhi ikhipha i-carbon dioxide emkhathini.
– Lapho amaminerali e-carbonate afana ne-calcite ebhekana nokuguquka kwamakhemikhali, i-carbon dioxide ingakhishwa ibuyele emoyeni.
2. Umsebenzi Wezintaba-mlilo Nezintaba
– Amatshe angcwatshwe njengetshezi angaba yingxenye yongqimba olujulile loMhlaba ngenqubo yokwehlukaniswa.
– Kulezi zinzulu, amatshe angancibilika abe yi-magma futhi akhuphukele phezulu njenge-lava ngesikhathi sokuqhuma kwezintaba-mlilo, okukhipha i-carbon dioxide.
3. Imisebenzi Yabantu
– Ukusetshenziswa kwamafutha emvelo kuyisibonelo esihle sendlela ikhabhoni egcinwe emadwaleni e-sedimentary ekhishwa ngayo emoyeni.
– Ukushisa amalahle, uwoyela, kanye negesi yemvelo ukuze kutholakale amandla kuphumela ekukhishweni kwekhabhoni dioksijini eningi, okubangela ukufudumala komhlaba kanye nokushintsha kwesimo sezulu.
Amatshe Asedimentary kanye Nokunciphisa Ukushintsha Kwesimo Sezulu
Njengoba ulwazi ngokushintsha kwesimo sezulu lukhula, ukuqonda indima yamatshe e-sedimentary emjikelezweni wekhabhoni kuya ngokuya kuba yinto ebaluleke kakhulu. Kunezindlela eziningana amatshe e-sedimentary angasiza ngazo ekunciphiseni ukuguquka kwesimo sezulu:
1. Ukumuncwa Kwekhabhoni Ngokwakhiwa Kwekhabhoni
– Izinyathelo ezifana ne-Enhanced Weathering zihlose ukusheshisa ukuguguleka kwamatshe acebile ngama-ion e-calcium noma e-magnesium, angasabela ne-carbon dioxide evela emkhathini ukuze akhe amaminerali e-carbonate, ngaleyo ndlela agcine ikhabhoni edwaleni unomphela.
2. Ukusetshenziswa Kwe-Geotechnical
– Kusetshenziswa amasu obunjiniyela be-geo njenge-Carbon Capture and Storage (CCS), i-carbon dioxide ekhiqizwa emisebenzini yezimboni ingabanjwa futhi ifakwe emadwaleni angcolile anezimbobo eziningi futhi akwazi ukugcina igesi isikhathi eside.
Isiphetho
Ukubaluleka kwamatshe angaphansi komhlaba emjikelezweni wekhabhoni kuvame ukunganakwa, kodwa indima yawo ibalulekile ekugcineni ibhalansi yekhabhoni yoMhlaba. Amatshe angaphansi komhlaba awagcini nje ngokugcina inani elikhulu lekhabhoni kokubili ezinhlotsheni eziphilayo nezingaphili, kodwa futhi adlala indima enqubweni yemvelo yokukhululwa kwekhabhoni emkhathini. Ngokuqonda le ndima, singaphatha ngokuhlakanipha izinsiza zoMhlaba futhi sithole izixazululo zokunciphisa imiphumela yokushintsha kwesimo sezulu. Ukucwaninga nokuthuthukisa ubuchwepheshe obusebenzisa indima yemvelo yamatshe angaphansi komhlaba kungaba yisinyathelo esibalulekile ekunciphiseni ukuguquka kwesimo sezulu esikhathini esizayo.
