pleistocene basaltic lava flows, consisting of trachybasalt and basaltic trachyandesite, cover an area north-northwest of shahre-babak in southeastern iran. the whole rock chemistry indicates that the lavas are dominantly alkaline and mildly calc-alkaline. variation diagrams of sio2 with major and trace elements are consistent with fractional crystallization processes involving olivine, pyroxen...

We explore Fe/Mn and Nb/Ta ratios of basalts as potential tracers for differentiating melts of recycled mafic crustal lithologies from peridotitic melts. Trace elements and Fe/Mn ratios of the Mesozoic and Cenozoic basalts from East China were analyzed by ICP-MS. Low Nb/Ta ratios (15.4 ± 0.3 (2r, n = 45)), high Nb and Ta contents (60.1 and 4.01 ppm) and high Fe/ Mn ratios (64.7 ± 1.5 (2r, n = 4...

the upper cretaceous ganj complex, a part of the jazmurian ophiolitic belt, is located on the western boundary of jazmurian depression and separated from kahnuj ophiolitic complex by north-south trending jiroft fault. the complex consists of lava flows, pillow lavas, acidic plutonic and sedimentary rocks which are intruded by northwest-southeast trending dykes. it does not resemble a classical ...

Globally, deep-water reservoir systems are comprised of a variety traps. Lateral and downdip trapping features include sand pinch-outs, truncation against salt or shale diapirs, monoclinal dip faulting with any combination designs; the potential for massive hydrocarbon accumulations exists, representing significant exploration prospects across planet. However, turbidites submarine fans two diff...

Abstract. Snow over sea ice controls energy budgets and affects growth melting thus has essential effects on the climate. Passive microwave radiometers can be used for basin-scale snow depth estimation at a daily scale; however, previously published methods applied to Antarctic clearly underestimated depth, limiting their further application. Here, we estimated using passive newly constructed, ...

Abstract Mantle-derived volcanic rocks from the Subbetic hyperextended basin in SE Spain provide new insights into composition and mechanical behavior of mantle during continental rifting. The present study describes a sequential restored cross-section along with geochemical characteristics basaltic interbedded within Mesozoic succession basin. Sedimentary stacking patterns minibasins above mob...

The North China Craton (NCC) was stable for more than 2.0 Gyr before a Jurassic–Cretaceous large-scale lithospheric thinning event, but the geodynamic setting during early phases (Late Jurassic) of NCC reworking remains controversial. We present new petrological and whole-rock geochemical data, zircon apatite geochemistry, U–Pb ages, O isotopic Sr–Nd data two Late Jurassic granite (Linglong Lua...

Abstract. Perennial firn aquifers are subsurface meltwater reservoirs consisting of a meters-thick water-saturated layer that can form on spatial scales as large tens kilometers. They have been observed within the percolation facies glaciated regions experiencing intense seasonal surface melting and high snow accumulation. Widespread perennial identified Greenland Ice Sheet (GrIS) via field exp...