Youqicang pingjia yu kaifa, 2021 Normalized Pressure Integral（NPI） Production Analysis is a kind of modern production decline analysis method which defines new parameters by integral. It can not only reflect the pseudo-steady state flow stage influenced by outer boundary, but also can ...
FU Tianyu +4 more
doaj
ZONATION OF PHLOGOPITE OF CARBONATITE-PEGMATITES OF THE BULDYM DEPOSIT OF THE VISHNEVYE MOUNTAINS (SOUTH URALS) [PDF]
Минералогия, 2017 In a plate 19 cm in size from the columnar crystal of phlogopite Buldym deposit in the Southern Urals, we studied the composition of alternating greenish-brown, yellowish-brown and darker brown areas by electron-probe microanalysis.
V.I. Popova +3 more
doaj
Geological rhythms and cometary impacts [PDF]
Time series analysis reveals two dominant, long-term periodicities approximately equal to 32 and 260 million years in the known series of geological and biological upheavals during the Phanerozoic Eon.
Rampino, M. R., Strothers, R. B.
core +1 more source
Tremor signals reveal the structure and dynamics of the Oldoinyo Lengai magmatic plumbing system
Communications Earth & EnvironmentEarth’s only active carbonatite volcano Oldoinyo Lengai, Tanzania, is a peculiar endmember of volcanism in a young rift segment. Targeted by many petrological studies due to its effusive, cold carbonatite eruptions, its subsurface structure has only been
Miriam Christina Reiss +3 more
doaj +1 more source
Magmatic Longevity of Laacher See Volcano (Eifel, Germany) Indicated by U-Th Dating of Intrusive Carbonatites [PDF]
, 2017 Uranium-series dating of carbonatitic ejecta clasts constrains the crystallization and differentiation timescales of the Laacher See volcano, which erupted 6·3 km3 of magma (dense rock equivalent) during one of the largest Late Quaternary eruptions in ...
Cooper, Kari M. +4 more
core
Геодинамика и тектонофизикаThe Ilmen-Vishnevogorsky and Buldym carbonatite complexes occurring in the Southern Urals represent linear deformed carbonatite complexes. Their origin, as well as the age and geodynamic conditions remain the subject of debate.
I. L. Nedosekova
doaj +1 more source
Polarization properties and Earth-based radar measurements of Venus in the post-Magellan era [PDF]
Studies of the polarization properties of reflected radar signals provide information about wavelength-scale surface and subsurface irregularities and can place constraints on the scattering models used to explain anomalously high backscatter cross ...
Campbell, D. B.
core +1 more source
Rb-Sr, Sm-Nd ages of the Phalaborwa Carbonatite Complex, South Africa [PDF]
, 2005 We analyzed Rb-Sr and Sm-Nd isotopic compositions of whole-rock and minerals from syenite, biotite gneiss xenolith, dolerite dyke, phoscorite, and carbonatite from the Phalaborwa Carbonatite Complex located in northeastern Transvaal, South Africa ...
Hiroo Kagami +3 more
core +1 more source
Small effect of partial melt on electrical anomalies in the asthenosphere. [PDF]
Sci Adv, 2023 Liu H, Yang X, Karato SI.
europepmc +1 more source
Element Partitioning between Immiscible Carbonatite and Silicate Melts for Dry and H2O-bearing Systems at 1-3 GPa [PDF]
, 2017 Carbonatite and silicate rocks occurring within a single magmatic complex may originate through liquid immiscibility. We thus experimentally determined carbonatite/silicate melt partition coefficients (Dcarbonate melt/silicate melt, hereafter D) for 45 ...
Guenther, Detlef +3 more
core