3. Crater Lake tau tsim los ntawm lub caij nplooj zeeg ntawm lub roob hluav taws. Mount Mazama, lub roob hluav taws siab 12,000-foot-ntev, tawg thiab tawg kwv yees li 7,700 xyoo dhau los, tsim Crater Lake. … Cov toj roob hauv pes ntawm Crater Lake nthuav tawm yog volcanic yav dhau los.
Puas yog pas dej Crater yog lub roob hluav taws kub?
Lub roob hluav taws lub vaj huam sib luag muaj tau ua haujlwm tsis tu ncua txij li 420, 000 xyoo dhau los, thiab nws tau tsim feem ntau ntawm andesite rau dacite kom txog thaum nws pib tawg rhyodacite txog 30,000 xyoo. dhau los, ramping mus txog caldera-forming eruption.
Lub roob hluav taws zoo li cas yog Crater Lake?
Crater Lake ib nrab sau ib hom kev nyuaj siab volcanic hu ua a caldera uas tsim los ntawm kev tawg ntawm 3,700 m (12,000 ft) volcano hu ua Mount Mazama thaum lub sij hawm ib qho kev tawg loj heev uas kwv yees li 7,700 xyoo dhau los. Lub climactic (caldera-forming) eruption ntawm Mount Mazama hloov lub toj roob hauv pes thoob plaws lub roob hluav taws.
Yuav ua rau lub pas dej Crater tawg dua?
Cov keeb kwm ntev ntawm kev ua haujlwm ntawm roob hluav taws ntawm Crater Lake qhia muaj zog tias qhov chaw volcanic no yuav tawg dua. Qhov tshwm sim tsis ntev los no tau tshwm sim ntawm lub pas dej hauv pem teb nyob rau sab hnub poob ntawm caldera. Yav tom ntej eruptions yuav tshwm sim nyob rau hauv tib cheeb tsam tshaj nyob deb sab hnub tuaj.
Thaum twg yog lub pas dej Crater lub roob hluav taws?
Lub caldera tau tsim nyob rau hauv lub roob hluav taws loj heev nruab nrab ntawm 6,000 thiab 8,000 xyoo dhau los uas ua rau Mount MountMazama.
