Bankin Zealandia

 

Bankin Zealandia
General information
Height above mean sea level (en)	2 m
Labarin ƙasa
Tsarin Daidaiton Labarin Kasa	16°53′00″N 145°51′00″E
Bangare na	Northern Mariana Islands (en)
Kasa	Tarayyar Amurka
Territory	Northern Mariana Islands (en)
Yankin kariya	Mariana Arc of Fire National Wildlife Refuge (en)
Flanked by	Pacific Ocean
Ƙasantuwa a yanayin ƙasa	Northern Mariana Islands (en)
Hydrography (en)

Bankin Zealandia, wanda aka fi sani da Farallon de Torres ko Piedras de Torres a cikin Mutanen Espanya, ko Papaungan a Chamorro, ya ƙunshi tsaunuka biyu na dutse kusan kilomita 1.5 (0.9 a baya, a cikin Tsibirin Mariana na Arewa a cikin Tekun Pacific. Ɗaya ya kai kimanin mita 1 (3.3 a lokacin da ruwa ya ragu; ɗayan ba ya yawanci a saman. Suna da nisan mil 11 (13 mi; 20 arewa maso gabashin Sarigan, tsakanin Sarigan da Guguan, amma saboda ƙaramin girman su, ba a lissafa su a yawancin taswirori ba. Bankin Zealandia yana ɗaya daga cikin Ƙungiyoyin Volcanic a cikin Mariana Arc of Fire National Wildlife Refuge na Marianas Trench Marine National Monument .

Taswirar da ta hada da Bankin Zealandia (DMA, 1983)

Ilimin ƙasa

Bankin Zealandia shine ɓangaren da aka fallasa na saman dutsen mai fitattun ruwa. A shekara ta 2004, binciken da NOAA ta yi ya gano fumaroles masu aiki, gami da yiwuwar aikin dutsen wuta.

Dutsen dutsen ya barke a baya-bayan nan rhyodacite amma a baya an gina shi azaman dutsen tsaunuka na andesitic wanda ya dade yana bacci ya isa dandalin carbonate ya girma akan kolin sa. Ganin cewa babban jikin magma mai girma na tsakiya zuwa ƙasa-ƙasa yana kasancewa ƙarƙashin kudu ta tsakiya Izu-Bonin-Mariana Arc wanda ya shimfiɗa kusan 150 kilometres (93 mi) zuwa kudancin bankin Zealandia, shi da dutsen tsaunuka na kusa na West Zealandia da Northwest Zealandia, idan ba su aiki a halin yanzu, suna iya barci kawai don haka ana kiran su da Zilalan Volcanic Complex. Bankin Zealandia shine gaban magmatic na yanzu kuma sauran tsaunuka biyu suna kusan 15 kilometres (9.3 mi) yamma suna cikin baka na baya.

Sunan

An sanya sunan Bankin Zealandia a cikin 1858 bayan jirgin ruwa na Burtaniya Zealandia . Yankin yana daga cikin Ƙungiyar Amurka ta Arewacin Mariana Islands .