Galasi lazaka 12,000 lapadziko lapansi lomwe lapezeka m'dziko la South America, chinsinsi chochokera kuthetsedwa

M'mbuyomu, mazenera a mapepala ankagwiritsidwa ntchito ku China wakale ndipo mawindo agalasi ndi amakono chabe, zomwe zimapangitsa kuti makoma a galasi a mizinda akhale owoneka bwino, koma magalasi a zaka zikwi makumi ambiri adapezekanso padziko lapansi, pamtunda wa makilomita 75. m’chipululu cha Atacama kumpoto kwa dziko la Chile ku South America.Madipoziti a magalasi akuda a silicate amwazikana mderali ndipo ayesedwa kusonyeza kuti akhalapo kwa zaka 12,000, anthu asanatulukire ukadaulo wopanga magalasi.Pakhala pali malingaliro okhudza kumene zinthu zamagalasizi zinachokera, chifukwa kuyaka kotentha kwambiri kokha kukanawotcha dothi lamchenga ku makristasi a silicate, zomwe zimapangitsa ena kuganiza kuti "moto wa gehena" unachitika kamodzi pano.Kafukufuku waposachedwa wotsogozedwa ndi dipatimenti yapadziko lapansi ya Brown University, Environmental and Planetary Sciences akuwonetsa kuti galasilo likhoza kupangidwa ndi kutentha kwanthawi yomweyo kwa comet yakale yomwe idaphulika pamwamba pamtunda, malinga ndi lipoti la Yahoo News pa 5 Novembara.Mwa kuyankhula kwina, chinsinsi cha chiyambi cha galasi lakale lathetsedwa.

Mu kafukufuku wa Brown University, wofalitsidwa posachedwapa mu nyuzipepala ya Geology, ofufuza amanena kuti zitsanzo za galasi la m'chipululu zili ndi tizidutswa tating'onoting'ono timene sitikupezeka pa Dziko Lapansi.Ndipo mcherewo umagwirizana kwambiri ndi zomwe zinabweretsedwa ku Dziko Lapansi ndi ntchito ya NASA ya Stardust, yomwe inasonkhanitsa particles kuchokera ku comet yotchedwa Wild 2. Gululo linamaliza, mogwirizana ndi maphunziro ena, kuti magulu amcherewa akhoza kukhala chifukwa cha comet yokhala ndi mawonekedwe ofanana ndi Wild 2 ikuphulika pamalo pafupi ndi Dziko Lapansi, mbali zina zimagwera mwachangu m'chipululu cha Atacama, nthawi yomweyo zimatulutsa kutentha kwambiri ndikusungunula mchenga, ndikusiya zina zake.

Matupi agalasi ameneŵa ali m’chipululu cha Atacama kum’maŵa kwa Chile, phiri lomwe lili kumpoto kwa Chile kum’mawa kwa mapiri a Andes ndi mapiri a m’mphepete mwa nyanja ku Chile kumadzulo.Popanda umboni uliwonse wa kuphulika kwamphamvu kwa mapiri, chiyambi cha galasi nthawi zonse chimakopa gulu la geological ndi geophysical kuderalo kuti afufuze.