
osborne truff

osborne truff, chaalaa kaalam antarinchipoyina madhya-samudra sikharam, idhi iteevala 79 million samvatsaraala kritam vyaapti chendadam aagipoyi undavacchu. idhi paschimam nundi thoorpu vaipu unde samudrapu adugubhagam, idhi prastuta tonga-kermadec sikharaaniki thoorpuna undhi, ikkada prastuta pasiphik plate australian plate yokka micro plate kinda anachivetaku lonavutondi. chaaritraatmaka bhaarii ontang jaava-manihiki-hikkurangi pedda agnipraanta (pedavi) yokka oohinchina vicchinna yantraamgaanni ardham chesukovadaniki osborne truff keelakam, endukante idhi daani uttaraana manihiki peethabhoomi mariyu nyoojilaandku sameepamlo daani dakshinaana hikurangi peethabhoomini vaeru cheyadaaniki daariteese vyaapti kendramgaa choopabadindi.
bhoogarbha shaastram.
daani neelamaaliga pasiphik madhya-samudra sikharam basault (morb) montil muulamtoe kuurpu anubandhaanni kaligi unna samudra basaltic crustga prasiddhi chendindi. dheeniki saapekshamgaa sannani avakshepana pora matrame untundi, tarachugaa mandam kante takkuvagaa untundi. samudrapu lothu kaneesam moodu vibhaagaalanu kaligi unnatlu vargeekarinchabadina kunda nundi daani meedugaa untundi, veetilo prati okkati etthu varaku gatlu unna vedalpu varaku akshasambandha loyanu kaligi untundi. daani nairuti bhaagam kalustundi mariyu kermadec kandakam nundi uttaraana unna chaalaa lothaina tonga kandakaanni bhougolikamgaa vaeru cheyadaaniki sahaayapadutundi, ikkada prastutam osborne seamount vadda unna louisville sikharam kermadec plate kinda anachiveyabadutondi. idhi rendu pedda samudra peethabhoomi madhya madhyalo 26° seey. la sameepamlo undhi. manihiki peethabhoomi ippudu uttaraana undhi mariyu daani dakshinaana newzealand sameepamlo hikurangi peethabhoomi undhi. thoorpuna eee loya wieshbone-eest manihiki scorp vadda mugustundi. daadaapu 40 million samvatsaraala paatu konasagina cretatius normal supercron (c34 normal magnetic polarity period, cran 34n) kaalamlo osborne truff churukuga undhi. dheeni ardham chaalaa vyaapti kendraala maadirigaa kakunda, vyaapti anchu yokka akshaniki samaantaramgaa bhuu ayaskanta tirogamananiki aadharalu unna kunda ekareeti ayaskanta dhruvanatanu kaligi untundi. inca, bathimetric dayta kante gurutvakarshana kramaraahityam adhyayanaalalo osborne truff marinta pramukha lakshanam. samudrapu adugubhaagamlo intha pedda praantamloo eee ekaruupata 1997loe vyaapti chendagala kendramgaa daani modati varnanaku daariteesindi mariyu antey 34n chivari natiki vyaapti aagipoyindi. glomour challenger 1987 natiki eee praantamlooni kontha bhaganni survey chesindi, ayithe samudragarbhamlo pedda lakshanam undani ardham chesukovadaniki prapancha ayaskaantata dayta andubaatulo ledhu.
tectonics.
dakshina pasiphik praantamloo bhougolika sanghatanalanu, mukhyamgaa subduction viramananu anchanaa veyadam mukhyam kabatti, osborne truff erpadataaniki khachitamaina samayam kontha charchaneeyaamsamgaa undhi. modati cheelika 11.5 kotla samvatsaraala kritam jarigi undaali. eee vyaapti sumaru 21 million samvatsaraalalo jarigindi, dheeni phalitamgaa hikurangi plate mariyu daani dakshinaana gondwana anchu venta plate kalayika jarigindi. 
prastuta uttama amarika pasiphik plate reference frame tectonics namoonaalo osborne truff manihiki plate mariyu hikurangi plate madhya vyaapti kendramgaa roopondinchabadindi, idhi taruvaata vyaapti agipoyinappudu neti pasiphik plate yokka sthira bhagaluga maarindi.
nyoojilaandku thoorpuna unna chatham raijnu hikurangi pedavi dheekonadamtho manihiki mariyu hikurangi peethabhoomi madhya vyaapti aagipoyindi mariyu 101 million samvatsaraala kritam kante ekkuva dhooramlo laeni eee sanghatana 86 million samvatsaraala kritam naatidi, conny ippudu pasiphik plate reference frame modalingtho 7 million samvatsaraala varaku itiivalidigaa nammutaaru.

