Mekhoa ea Lipatlisiso Thutong ea Lintho tsa Khale tsa Pele ho Histori
Thuto ea lintho tsa khale tsa pele ho nalane ke lekala la thuto ea lintho tsa khale le ithutang bophelo ba batho pele ho litlaleho tse ngotsoeng. Hobane ha ho na litokomane tse ngotsoeng tse re tataisang, litsebi tsa lintho tsa khale tsa pele ho nalane li tlameha ho itšetleha ka bopaki ba lintho tse bonahalang tse kang lisebelisoa tsa majoe, mesaletsa ea lijo, masapo, mesaletsa ea libaka tsa bolulo le liphetoho tsa tikoloho. Ho utloisisa nako e fetileng ka boikarabelo, lipatlisiso tsa lintho tsa khale tsa pele ho nalane li ke ke tsa etsoa ka mokhoa o sa reroang; li hloka mekhoa e hlophisitsoeng, e ka lekanngoang le e ka hlahlojoang hape. Sengoloa sena se tšohla mekhahlelo e meholo le mekhoa ea lipatlisiso thutong ea lintho tsa khale tsa pele ho nalane, ho tloha ho qaptjoeng ha bothata ho ea tlhahlobong le tlhalosong ea laboratori.
1. Ho Theha Mathata le Moralo oa Khopolo-taba
Diphuputso tse ntle kamehla di qala ka potso e hlakileng ya diphuputso. Thutong ya ho epolla dintho tsa kgale, dipotso di ka kenyeletsa: sebaka seo se ne se ahilwe neng? Batho ba ne ba etsa disebediswa jwang? Na e ne e le batsomi le bakgoboketsi kapa balemi? Mekgwa ya ho falla le ho sebelisana pakeng tsa dihlopha e ne e le efe? Dipotso tsena di bopilwe ka hara moralo o itseng wa thuto, jwalo ka mokgwa wa tikoloho (dikamano tsa batho le tikoloho), thuto ya ho epolla dintho tsa kgale (ho totobatsa ditlhaloso tsa mahlale le dipaterone), kapa thuto ya ho epolla dintho tsa kgale (ho totobatsa moelelo, matshwao, le boikgethelo ba batho).
Meralo ea khopolo-taba e bohlokoa hobane e susumetsa mofuta oa data e bokelletsoeng, mekhoa ea ho nka lisampole le mehlala ea tlhaloso. Mohlala, bafuputsi ba shebaneng le moruo oa boipheliso ba tla beha pele tlhahlobo ea mesaletsa ea limela (macro le micro) le liphoofolo, ha bafuputsi ba shebaneng le theknoloji ba tla hatisa mofuta oa lisebelisoa le tšebeliso ea tsona.
2. Thuto ea Pele: Lingoliloeng, Limmapa le Lintlha tsa Tikoloho
Pele ba kena tšimong ena, baepolli ba lintho tsa khale ba etsa lithuto tsa pele ho utloisisa maemo a libaka. Sena se kenyelletsa tlhahlobo ea lingoliloeng tsa lipatlisiso tsa pele, tlhahlobo ea limmapa tsa topographic le geological, le tlhaiso-leseling mabapi le hydrology, limela le nalane ea naha. Lintlha tsena li thusa ho bolela esale pele libaka tse ka bang teng tsa libaka tsa pele ho nako , tse kang haufi le linoka tsa boholo-holo, mathule a linoka, mahaha a karst, kapa libaka tse nang le mehloli e itseng ea lefika bakeng sa lisebelisoa tsa lisebelisoa.
Mothating ona, theknoloji ea GIS (Geographic Information Systems) hangata e sebelisoa ho etsa mohlala oa sebaka, ho fumana mehloli ea 'mapa, le ho sekaseka kabo ea libaka. Tlhaloso ea pele e thehiloeng 'mapeng le setšoantšong le eona e thusa ho rera phuputso ka katleho e kholoanyane.
3. Phuputso ea Lintho tsa Khale: Ho Fumana le ho Etsa 'Mapa oa Libaka
Ho etsa lipatlisiso ke mokhoa o ka sehloohong oa ho fumana libaka le ho utloisisa mekhoa ea kabo ea tsona. Ho na le mefuta e 'maloa ea ho etsa lipatlisiso thutong ea khale ea khale:
1. Phuputso ea bokaholimo: Bafuputsi ba tsamaea sebakeng se itseng ho batla lintho tsa khale kapa likarolo tse bonahalang holim'a bokaholimo, tse kang makumane a majoe, likotoana tsa lipitsa tsa pele, likhetla, kapa mehaho ea majoe.
2. Phuputso e hlophisitsoeng: Sebaka se arotsoe ka li-transect kapa li-grid, ebe sehlopha se latela tsela sebakeng se itseng (mohlala, limithara tse 10-20) e le hore tšireletso e be e lekanang 'me data e ka baloa ka bongata.
3. Phuputso ea mahaha le sebaka se itseng (phuputso ea rockshelter): E bohlokoa haholo libakeng tsa karst, hobane mahaha hangata a na le likarolo tse teteaneng le tse sirelelitsoeng tsa stratigraphic.
4. Phuputso e ka tlas'a metsi: E sebetsa bakeng sa pele ho nalane ea lebōpo la leoatle kapa libaka tse koahetsoeng ke metsi hona joale, leha e hloka lisebelisoa le boiphihlelo bo khethehileng.
Liphetho tsa phuputso li kenyelletsa libaka tsa GPS, lirekoto tsa boemo ba sebaka, litšoantšo, le pokello e lekanyelitsoeng ea lintho tsa khale (haeba li lumelloa) bakeng sa ho tsebahatsa ha pele. Liphuputso li ka boela tsa kenyelletsa lipuisano le baahi ba moo, bao hangata ba tsebang libaka tsa lilepe tsa majoe, li-adze, kapa masalla a lepato.
4. Ho epolla: Ho Epa ho Lekantsoeng le Litokomane tsa Stratigraphic
Ho epolla ke karolo ea bohlokoa ea lipatlisiso tsa lintho tsa khale hobane ho sibolla mekhahlelo ea mobu (stratigraphy) e tlalehang tatellano ea liketsahalo tsa nakong e fetileng. Thutong ea lintho tsa khale ea pele ho histori, stratigraphy ke ea bohlokoa bakeng sa ho fumana tatellano ea liketsahalo le kamano pakeng tsa lintho tsa khale le moelelo oa tsona.
Melao-motheo e meng ea bohlokoa ea ho epolla e kenyelletsa:
– Ho epolloa ho thehiloeng ho yuniti: Sebaka sena se arotsoe ka lisekoere (mohlala, 1 × 1 m kapa 2 × 2 m). Yuniti ka 'ngoe e epolloa ka mekhahlelo ho ea botebong bo itseng kapa ho latela liphetoho tsa tlhaho tsa lera.
– Rekoto e qaqileng: Sephetho se seng le se seng se tlalehiloe bakeng sa sebaka sa sona, botebo, kamano le likarolo (leifo, lesoba la poso, mokatong oa bolulo), 'me se tlalehiloe ka lifoto le litšoantšo tsa profil.
– Ho hlahloba mobu: Mobu o epolotsoeng o sefshoa ho fumana lintho tse nyenyane tse kang li-microflakes, masapo a manyane, kapa masala a lithollo.
– Ho etsa disampole: Disampole tsa mashala bakeng sa peo e phofshoana, phytolith, kapa tlhahlobo ya ho ikatisa; disampole tsa mashala tse tswang maemong a mollo bakeng sa ho ikatisa ha radiocarbon; le disampole tsa masapo bakeng sa di-isotope kapa DNA (haeba maemo a dumela).
Ho epolloa ha lintho tsa khale ho tlameha ho latela melao ea paballo hobane hoa senya: hang ha mobu o butsoe, moelelo oa pele o ke ke oa tsosolosoa. Ka hona, litokomane tse felletseng li sebetsa e le "sebaka" sa sebaka seo ka mor'a hore se epolloe.
5. Ho intša: Ho fumana Lilemo le Kemiso ea Nako
Ho utloisisa pele ho nalane, ho intša ke habohlokoa. Mekhoa ea ho intša e arotsoe ka likarolo tse peli: kamano le e feletseng.
– Ho intša ho amanang: Ho ipapisitsoe le stratigraphy (mekhahlelo e tebileng ka kakaretso ke ea khale), mofuta oa lintho tsa khale (liphetoho sebopehong sa sesebelisoa ha nako e ntse e ea), le kamano ea lintho tse fumanoeng.
– Ho intša ka botlalo: Ho fana ka selemo kapa nako e itseng. Mekhoa e sebelisoang hangata e kenyelletsa:
– Radiocarbon (C-14) bakeng sa lintho tse phelang tse kang mashala, masapo, kapa likhetla (ka litokiso tse itseng).
– OSL (Optically Stimulated Luminescence) ho fumana hore na sediment e qetetse ho pepesetsoa leseling neng, e thusa libakeng tse bulehileng.
– Letoto la U bakeng sa thepa ea carbonate joalo ka li-stalagmite mahaheng.
– Dendrochronology (e sa fumaneheng hangata libakeng tse itseng tsa tropike) haeba lehong le nang le masale a hlakileng a selemo le selemo le fumaneha.
Khetho ea mokhoa oa ho intša e itšetlehile ka mofuta oa mohlala, maemo a paballo, le potso ea lipatlisiso. Ha e le hantle, ho intša ho lokela ho phetoa ho tsoa maemong a mangata ho netefatsa liphetho tse lumellanang.
6. Tlhahlobo ea Lintho tsa Matsoho : Mofuta, Theknoloji le Mehlala ea Tšebeliso
Lintho tsa khale tsa khale—haholo-holo lisebelisoa tsa majoe—hangata li etsa sete ea lintlha tsa mantlha. Tlhahlobo e kenyelletsa:
– Mofuta: Ho arola mesebetsi ea matsoho ho latela sebopeho le litšobotsi, joalo ka lilepe tsa letsoho, li-flakes, mahare, lihlooho tsa metsu, kapa li-adze. Mofuta o thusa ho theha tatellano ea liketsahalo le ho bapisa libaka.
– Tlhahlobo ea theknoloji (ketane ea ts'ebetso): E haha bocha ts'ebetso ea ho etsa lisebelisoa: khetho ea thepa, mekhoa ea ho seha, mekhahlelo ea tlhahiso le ho lahla. Sena se fana ka temohisiso mabapi le bokhoni, tlhophiso ea mosebetsi le phihlello ea mehloli ea thepa e tala.
– Tlhahlobo ea tšebeliso le ho roaloa: Ho shebella mengoapo e menyenyane le ho benya holim'a sesebelisoa ho fumana mosebetsi oa sona, mohlala, ho seha nama, ho sebetsana le patsi, kapa ho kotula lijalo.
– Tlhahlobo ea masala: E lemoha protheine e setseng, starch, kapa mafura, leha e hloka taolo e tiileng ea tšilafalo.
Bakeng sa dipitsa tsa pele (haeba dinako tsa pele ho na le tse tsebahalang), tlhahlobo e ka kenyeletsa sebopeho, mokhabiso, mekgwa ya ho thunya, hammoho le tlhahlobo ya petrographic ho fumana tshimoloho ya thepa le marangrang a phapanyetsano.
7. Tlhahlobo ea Bioeological le Tikoloho: Masapo, Limela le Lithota
Kaha pele ho nalane ho amana haufi-ufi le ho ikamahanya le tikoloho, baepolli ba lintho tsa khale ba kopanya mekhoa ea saense ea tlhaho:
– Zooarchaeology: Ho sekaseka masapo a liphoofolo ho fumana hore na a jeoa joang, ho tsoma, ho rua liphoofolo lapeng, le hore na a na le nako e kae ea selemo. Mekhoa ea ho seha le matšoao a ho chesa li ka senola mekhoa ea ho sebetsana le lijo.
– Archaeobotany: Ho sekaseka masalla a dimela a kang dipeo, mashala, di-phytolith, kapa starch ho tsosolosa dijo, temo le dimela tse di potileng.
– Geoarchaeology: Thuto ea lithōle, mekhoa ea ho theha sebaka, le liphetoho tsa naha (meroallo, ho thella ha mobu, mesebetsi ea noka). Sena se bohlokoa hore bafuputsi ba utloisise hore na lera ke phello ea mesebetsi ea batho kapa mekhoa ea tlhaho.
– Tlhahlobo ea Isotope: Masapong a batho/liphoofolo kapa menong, e ka bontša mekhoa ea lijo (mohlala, puso ea liprotheine tsa leoatleng khahlanong le tsa lefatše) le ho tsamaea ha tsona.
– DNA ea Boholo-holo: Haeba paballo e lumella, e ka senola kamano, ho falla, le nalane ea baahi, empa e hloka libaka tse khethehileng tsa laboratori le mekhoa e sa hloekang.
8. Liteko tsa Baepolli ba Lintho tsa Khale le tsa Setso: Liteko tsa Khopolo-taba
Lipatlisiso tsa pele ho nalane hangata li kenyelletsa liteko tsa ho epolla lintho tsa khale, mohlala, ho leka ho etsa lisebelisoa tsa majoe ho sebelisa mekhoa e itseng ho utloisisa matšoao a tšusumetso, bokhoni ba lisebelisoa, kapa linako tsa tlhahiso. Liteko li boetse li sebelisoa ho etseng lipitsa tsa letsopa, mekhoa ea ho besa mollo, kapa ho tsosoloseng matlo.
Ho phaella moo, thuto ea lintho tsa khale tsa setso e ithuta lichaba tsa sejoale-joale kapa tsa setso tse ntseng li sebelisa mekhoa e itseng (mohlala, ts'ebetso ea sago, ho etsa lisebelisoa tse bonolo, mekhoa ea bolulo ea linako tsa selemo) e le lipapiso tse hlokolosi bakeng sa ho toloka lintlha tsa pele ho nako. Lipapiso ha lia lokela ho nkoa ka boleng ba tsona, empa li sebelisoe ho atolosa menyetla ea tlhaloso.
9. Tlhaloso, Tlaleho, le Boitšoaro ba Paballo
Lintlha tsa baepolli ba lintho tsa khale ha li "ipuelle"; li hloka tlhaloso e utloahalang le e hlakileng. Baepolli ba lintho tsa khale ba kopanya liphetho tsa ho ipehela nako, tlhahlobo ea lintho tsa khale, le lintlha tsa tikoloho ho araba lipotso tsa lipatlisiso. Tlhaloso e utloahalang e tlameha ho nahana ka litlhaloso tse ling, leeme la ho nka lisampole, le mekhoa ea ho theha sebaka.
Mohato oa ho qetela, oa bohlokoa ke ho tlaleha le ho phatlalatsa. Litlaleho tsa ho epolla lintho tsa khale, li-database, limmapa le li-catalog tsa lintho tse fumanoeng li tlameha ho hlophisoa hore bafuputsi ba bang ba li fumane le ho li hlahloba. Linaheng tse ngata, ho tlaleha le hona ke tlamo ea molao. Ka nako e le 'ngoe, litsebi tsa lintho tsa khale li tlameha ho nahana ka paballo: hore na sebaka seo se lokela ho kenngoa hape, hore na lintho tsa khale li lokela ho bolokoa joang, le hore na sechaba sa lehae se ka kenyelletsa joang e le bankakarolo ba bohlokoa.
Ho koala
Mokhoa oa lipatlisiso thutong ea lintho tsa khale tsa khale ke letoto la mekhahlelo e amanang: ho theha bothata, ho etsa lipatlisiso, ho cheka ka taolo ea stratigraphic, ho fumana lilemo ka ho fumana nako, ho sekaseka lintho tsa khale le tikoloho, ebe ho toloka lintlha ka boikarabello. Hobane pele ho nalane ha ho na lingoliloeng, ho tiea ha mekhoa ke senotlolo sa ho netefatsa hore liphetoho tsa nako e fetileng ha li fetohe likhakanyo feela. Ka tšehetso ea mahlale a sejoale-joale a kang GIS, OSL, isotopes le DNA ea boholo-holo, lipatlisiso tsa pele ho nalane li ntse li khona ho hlalosa eseng feela "se fumanoang" empa hape le "kamoo batho ba phetseng, ba ikamahanyang le maemo le ho fetoha" ka nako e telele haholo.
