Morphology of Crystals Growing in Impact Diamonds of the Popigai Astrobleme (Experimental Data)     

Chepurov  A. I.  Zhimulev  E. I.  Sonin  V. M.  Chepurov  A. A.  Karpovich  Z. A.  Goryainov  S. V.  Afanasiev  V. P.  Pokhilenko  N. P. 《Doklady Earth Sciences》2021,500(1):734-737

Doklady Earth Sciences - Experimental results on the growth of cubic diamond on lonsdaleite-bearing diamonds from the Popigai astrobleme at 5.5 GPa and 1450°C in the Fe–Ni–C system...  相似文献   

Dynamics of Dissolved Carbon in the Mainstem of the Lena River in July 2017     

Pipko  I. I.  Pugach  S. P.  Moiseeva  Yu. A.  Dudarev  O. V.  Repina  I. A.  Sergienko  V. I.  Semiletov  I. P. 《Doklady Earth Sciences》2021,500(2):882-889

Doklady Earth Sciences - The dynamics of dissolved carbon forms in the waters of the mainstem of the Lena River from the middle reaches (the city of Yakutsk) to the nearshore zone of the Laptev Sea...  相似文献   

Extreme Atmospheric and Hydrological Phenomena in Russian Regions: Relationship with the Pacific Decadal Oscillation     

Mokhov  I. I. 《Doklady Earth Sciences》2021,500(2):861-865

Doklady Earth Sciences - The regional features of the formation of extreme atmospheric and hydrological, climatic, and ecological regimes in connection with the manifestations of the Pacific...  相似文献   

Multi-Stage Magmatic-Hydrothermal Sulfide-PGE Mineralization of the Khudolaz Complex (South Urals)     

Rakhimov  I. R.  Vishnevskiy  A. V.  Saveliev  D. E.  Salikhov  D. N.  Vladimirov  A. G. 《Geology of Ore Deposits》2021,63(4):341-367

Geology of Ore Deposits - For the first time, from the standpoint of magmatism and subsequent hydrothermal–metasomatic alteration, sulfide and platinum-metal mineral assemblages of rocks of...  相似文献   

The Khovu-Aksy Cobalt-Arsenide Deposit,Republic of Tuva,Russia: New Perspectives on the Problems of Production and Renewal of Processing     

Lebedev  V. I. 《Geology of Ore Deposits》2021,63(3):212-238

Geology of Ore Deposits - The Khovu-Aksy Ag–Bi–Cu–Ni–Co arsenide deposit discovered in 1947 was explored in detail by 1954. The Tuvakobalt Mining Complex mined veins cutting...  相似文献   

Observations of Tilt Deformations in Moscow during the November 12, 2017, Earthquake at the Iran–Iraq Boundary     

Aleshin  I. M.  Ivanov  S. D.  Perederin  F. V.  Steblov  G. M.  Kholodkov  K. I.  Shirokov  I. A. 《Doklady Earth Sciences》2021,496(2):160-163

Doklady Earth Sciences - A residual tilt after a teleseismic earthquake is described in this work. The results of static and dynamic modeling of this event fit the measured values. The conditions...  相似文献   

Structural and Morphological Features of the Participation of Microorganisms in the Formation of Nb–REE–Rich Ores of the Tomtor Field (Russia)     

Dobretsov  N. L.  Zhmodik  S. M.  Lazareva  E. V.  Bryanskaya  A. V.  Ponomarchuk  V. A.  Saryg-ool  B. Yu.  Kirichenko  I. S.  Tolstov  A. V.  Karmanov  N. S. 《Doklady Earth Sciences》2021,496(2):135-138

Doklady Earth Sciences - Data indicating the important role of microorganisms in the redistribution of REEs in the weathering crust and the decisive role in the concentration of REEs during the...  相似文献   

The Strong Earthquake in Sakhalin Island in September 13, 2020     

Konovalov  A. V.  Khanchuk  A. I.  Stepnov  A. A.  Stepnova  Yu. A. 《Doklady Earth Sciences》2021,497(1):242-245

Doklady Earth Sciences - The seismotectonic position of the strong earthquake that occurred in the southern part of Sakhalin Island on September 13, 2020, is considered. The maximum shaking...  相似文献   

Provenance of Precambrian Fe- and Al-rich Metapelites in the Yenisey Ridge and Kuznetsk Alatau, Siberia： Geochemical Signatures   总被引：2，自引：0，他引：2  

Igor I. LIKHANOV  Vladimir V. REVERDATTO 《《地质学报》英文版》2007,81(3):409-423

Major, trace and rare earth element contents of Fe- and Al-rich metapelites from the Korda （Yenisey Ridge） and Amar （Kuznetsk Alatau） formations were determined to examine the nature, origin and evolution of their protoliths. Results indicate that these rocks are the redeposited and metamorphosed products of Precambrian kaolinitic weathering crusts, while the geochemical distinctions between the studied metapelites are determined by different weathering conditions in the source area and tectonic settings. The protolith of the Korda Formation metapelites was produced by erosion products of the post-Archean granitoid rocks, which accumulated under humid climate conditions in shallow-water basins along the continental margin. The geochemical characteristics of the deeper primary deposits of the Amar Formation suggest that volcanogenic material of mafic composition derived from an island-arc environment had a major role in supplying the erosion zone. These results agree with lithofacies data and with the geodynamic reconstruction of the evolution of the Yenisey Ridge and Kuznetsk Alatau during the Mesoproterozoic and Neoproterozoic, respectively. It was shown that REEs had limited mobility during contact metamorphism. The coherent mobility of REEs during collisional metamorphism may be attributed both to mineral reactions responsible for modal changes and to local chemical heterogeneity inherited from the initial protolith.  相似文献   

New results on large-scale structures     

M. Kalinkov  K. Stavrev  I. Kuneva 《Astronomische Nachrichten》1985,306(5):283-300

A new version of the magnetic-tape catalog of ABELL clusters of galaxies is used to obtain redshift estimators and to generate two samples of clusters. A procedure for searching for superclusters of galaxies is applied and the results are given in tabular and graphic form. For a lmited homogeneous sample (distance 60–275 Mpc, galactic latitude B > 35°), 12 multiplets, having member clusters with known redshifts, are found. It is shown that the spatial covariance function for rich clusters has the form ξ = (r₀/r)γ with r₀ = 22.4 ± 1.8 Mpc and γ = 1.90 ± 0.25 for 3 Mpc ≲ r ≲ 80 Mpc.  相似文献