典型文献
Isla San Pedro Nolasco as a Late Miocene intrusive record at the eastern margin of the Gulf of California:Insights from geological,geochemical and geochronological studies
文献摘要：
Isla San Pedro Nolasco(ISPN)is a structural high bounded by inactive dextral oblique-slip faults in the east-central part of the Gulf of California rift zone and is composed of intrusive rocks not exposed on other Gulf of California islands.Here we present the reconnaissance results from geological mapping,as well as first geochemical and geochronological data for the ISPN intrusive complex.The intrusive rocks compose a sheet-like body of intermediate and felsic composition intruded by an intermediate and acidic dike swarm.All intrusive rocks(host and dikes)range in age from ca.9 Ma to 10 Ma(40Ar/39Ar)and show a hydrous ferromagnesian mineral association(amphibole and biotite)with a calc-alkalic and transitional affinity.This hydrated mineralogical association has not been recognized in the coeval rocks along the onshore western margin of the North American plate(coastal Sonora).However,such hydrous miner-alogical association is found in the coeval rift transitional volcanic rocks from the Baja California Microplate at Santa Rosalía and Bahía de Los ángeles-Bahía de Las ánimas.The ISPN continental block,at least 40 km long,has been pulled apart by transtensional faulting of the late Miocene Gulf of California shear zone before the westward migration of the North America-Pacific plate boundary at ca.3-2 Ma.Eventually,ISPN became isolated as an island during the late Miocene flooding of the Gulf of California seaway.
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中图分类号：
作者姓名：
L.A.Velderrain-Rojas;J.R.Vidal-Solano;L.M.Alva-Valdivia;R.Vega-Granillo;M.López-Martinez
作者机构：
Departamento de Geología,División de Ciencias Exactas y Naturales,Universidad de Sonora,C.P.83000 Hermosillo,Sonora,Mexico;Laboratorio de Paleomagnetismo,Instituto de Geofísica,Universidad Nacional Autónoma de México,Circuito de la Investigación Científica,C.P.04510 México,D.F.,Mexico;Departamento de Geología,División de Ciencias de la Tierra,Centro de Investigación Científica y de Educación Superior de Ensenada,Baja California,Mexico
文献出处：
引用格式：
[1]L.A.Velderrain-Rojas;J.R.Vidal-Solano;L.M.Alva-Valdivia;R.Vega-Granillo;M.López-Martinez-.Isla San Pedro Nolasco as a Late Miocene intrusive record at the eastern margin of the Gulf of California:Insights from geological,geochemical and geochronological studies)[J].地学前缘（英文版）,2022(03):100-114
A类：
Nolasco,ISPN,ferromagnesian,alkalic,Sonora,alogical,Microplate,Rosal,Bah,ngeles,nimas,transtensional,seaway
B类：
Isla,Pedro,Late,Miocene,intrusive,record,eastern,margin,Gulf,California,Insights,from,geological,geochemical,geochronological,studies,structural,high,bounded,by,inactive,dextral,oblique,slip,faults,central,rift,zone,composed,rocks,not,exposed,other,islands,Here,present,reconnaissance,results,mapping,well,first,data,complex,sheet,like,body,intermediate,felsic,composition,intruded,acidic,swarm,All,host,dikes,range,age,Ma,40Ar,39Ar,show,hydrous,association,amphibole,biotite,calc,transitional,affinity,This,hydrated,mineralogical,has,been,recognized,coeval,along,onshore,western,North,American,coastal,However,such,found,volcanic,Baja,Santa,Los,Las,continental,block,least,pulled,apart,faulting,shear,before,westward,migration,Pacific,boundary,Eventually,became,isolated,during,flooding
AB值：
0.463829
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