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   

Till genesis at the bed of an Antarctic Peninsula palaeo‐ice stream as indicated by micromorphological analysis     

BENEDICT T. I. REINARDY  JOHN F. HIEMSTRA  TAVI MURRAY  CLAUS‐DIETER HILLENBRAND  ROBERT D. LARTER 《Boreas: An International Journal of Quaternary Research》2011,40(3):498-517

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A coupling method for soil structure interaction problems     

M. Souli  I. Shahrour 《国际地质力学数值与分析法杂志》2013,37(9):1140-1153

This paper describes a soil‐structure coupling method to simulate blast loading in soil and structure response. For the last decade, simulation of soil behavior under blast loading and its interaction with semi buried structure in soil becomes the focus of computational engineering in civil and mechanical engineering communities. In current design practice, soil‐structure interaction analysis often assumes linear elastic properties of the soil and uses small displacement theory. However, there are numerous problems, which require a more advanced approach that account for soil‐structure interaction and appropriate constitutive models for soil. In simplified approaches, the effect of soil on structure is considered using spring‐dashpot‐mass system, and the blast loading is modeled using linearly decaying pressure–time history based on equivalent trinitrotoluene and standoff distance, using ConWep, a computer program based on semi‐empirical equations. This strategy is very efficient from a CPU time computing point of view but may not provide accurate results for the dynamic response of the structure, because of its significant limitations, mainly when soil behavior is strongly nonlinear and when the buried charge is close to the structure. In this paper, both soil and explosive are modeled using solid elements with a constitutive material law for soil, and a Jones–Wilkins–Lee equation of state for explosive. One of the problems we have encountered when solving fluid structure interaction problems is the high mesh distortion at the contact interface because of high fluid nodal displacements and velocities. Similar problems have been encountered in soil structure interaction problems. To prevent high mesh distortion for soil, a new coupling algorithm is performed at the soil structure interface for structure loading. The coupling method is commonly used for fluid structure interaction problems in automotive and aerospace industry for fuel sloshing tank, and bird impact problems, but rarely used for soil structure interaction problems, where Lagrangian contact type algorithms are still dominant. Copyright © 2012 John Wiley & Sons, Ltd.  相似文献   

Geochemical peculiarities of some rock-forming minerals during experimental modeling of shock metamorphism     

S. G. Skublov  V. I. Fel’dman  E. A. Kozlov 《Doklady Earth Sciences》2010,432(1):638-643

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Holocene river and slope activity in the Visoko Basin,Bosnia‐Herzegovina – climate and land‐use effects     

S. DREIBRODT  C. LUBOS  R. HOFMANN  N. MÜLLER‐SCHEEßEL  I. RICHLING  O. NELLE  M. FUCHS  K. RASSMANN  Z. KUJUNDŽIĆ‐VEJZAGIĆ  H.‐R. BORK  J. MÜLLER 《第四纪科学杂志》2013,28(6):559-570

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3. ÉCOULEMENT PROVONANT DE LA COUVERTURE DE NEIGE COMMUNICATIONS DIVERSES     

Prof. M. I. LVOVITCH 《水文科学杂志》2013,58(4):23-31

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