Геология России: Recent submissions

Now showing items 1121-1140 of 40749

TRACE ELEMENT AND SR-ND-PB-O ISOTOPIC SYSTEMS OF THE PANZHIHUA LAYERED GABBRO INTRUSION: CONSTRAINTS ON THE MANTLE SOURCE REGIONS AND ORIGIN OF V-TI-FE OXIDE DEPOSIT

Ai Y.; Zhang Z.; Zhao L.; Yang T.; Wang F.; Hao Y. (2006)

The Panzhihua intrusion, a part of the Emeishan large igneous province, is one of typical V - Ti magnetite ore-bearing layered gabbro intrusions. The Sr, Nd and Pb isotopic data overlap the field of the Emeishan basalts ...
WEIYA QUARTZ SYENITE IN EARLY INDOSININA FROM EASTERN TIANSHAN MOUNTAINS: PETROGENESIS AND TECTONIC IMPLICATIONS

Zhang Z.Z.; Gu L.X.; Wu C.Z.; Li W.Q.; Tang J.H.; Zhai J.P. (2006)

Voluminous literature has resulted from study of the geology and tectonic environments of the eastern Tianshan Mountains in Paleozoic, whereas tectonic evolution of the eastern Tianshan Mountains in Indosinian has not been ...
ZIRCON SHRIMP AGE AND GEOCHEMISTRY OF CAIZHONG GRANITE FROM EAST TIANSHAN, XINJIANG, CHINA

Li W.; Xia B.; Wang Q.; Wang H.; Wang K. (2006)

SHRIMP U-Pb age for zircons, major and trace elements and Nd-Sr isotopic compositions for biotite monzonitic granite of Caizhong in Kangguertage area in eastern Tianshan of the Xinjiang are studied in this paper. A 206Pb/238U ...
THE MESOZOIC AND CENOZOIC EXHUMATION HISTORY OF TIANSHAN AND COMPARATIVE STUDIES TO THE JUNGGAR AND ALTAI MOUNTAINS

Guo Z.; Zhang Z.; Wu C.; Fang S.; Zhang R. (2006)

The Tianshan is a Cenozoic intracontinental orogenic belt. To constrain its deformation history during Mesozoic and Cenozoic, we conducted integrated research on apatite fission track dating from different sections across ...
TRACE ELEMENT MOBILIZATION IN SUBDUCTED SLABS: CONSTRAINTS ON AN ECLOGITE-FACIES TRANSPORT VEIN FROM THE WESTERN TIANSHAN, NW CHINA

Xiong X.; Gao J.; John T.; Klemd R.; Huang D. (2006)

The mafic high-pressure rocks from the western Tianshan exhibit an interconnected network of eclogite-facies veins derived by prograde blueschist dehydration. They provide insight into fluid-rock interactions and element ...
PB ISOTOPIC COMPOSITION OF GRANITOIDS FROM THE ALTAY OROGEN (CHINA): EVIDENCE FOR MANTLE-DERIVED ORIGIN AND CONTINENTAL GROWTH

Tong Y.; Wang T.; Hong D.; Han B. (2006)

In the study of the sources of the Altay granitoids, Pb isotopic composition of feldspar from various typical syn-orogenic and post-orogenic and mafic intrusions from the Altay are analyzed. The results show that the ...
CRUSTAL TECTONIC FRAMEWORK OF NORTHERN XINJIANG AND ADJACENT REGIONS AND ITS FORMATION

Li J.; Sun G.; Yang T.; Gao L.; Zhu Z.; He G.; Xu X.; Li H. (2006)

Based on the geological data the authors collected in northern Xinjiang in the last two decades, together with a comprehensive analysis on the existent geological and geophysical data, they discussed the present-day crustal ...
LATE VARISCAN POST-COLLISIONAL CU-NI SULFIDE DEPOSITS IN EAST TIANSHAN AND ALTAY IN CHINA: PRINCIPAL CHARACTERISTICS AND POSSIBLE RELATIONSHIP WITH MANTLE PLUME

Mao J.; Zhang Z.; Yang J.; Zhang C.; Pirajno F.; Chai F.; Wu H.; Cheng S.; Chen S. (2006)

In the past twenty years 18 Cu - Ni sulfide deposits and occurrences were discovered in the Chinese Tianshan and Altay orogenic belts in northern Xinjiang, China. There are several belts and ore districts along several ...
DIFFERENTIAL SALT TECTONIC DEFORMATION AND SEGMENTATION OF THE KUQA FORELAND FOLD-THRUST BELT, TARIM BASIN, NORTHWEST CHINA

Tang L.; Yu Y.; Chen S.; Jingchang L.; Wang Q.; Yang W.; Xie H.; Peng G. (2006)

The differential salt tectonic deformation and segmentation in the Kuqa foreland fold-thrust belt have been observed by field observation, geographic information system (GIS) analysis, 3D visualization, salt-related ...
GEOLOGY AND METALLOGENIC MODEL OF THE ALTAY LARGE METALLOGENIC BELT IN KAZAKHSTAN

Yang F.; Mao J.; Zhao C.; Ye H.; Zheng J.; Xu L.; Liu D. (2006)

This paper briefly introduces the tectonic environment, geology, metallogeny, typical mineral deposits and metallogenic model of the Altay metallogenic belt in Kazakhstan. The Rudny Altay in Kazakhstan is an important VHMS ...
MAIN FACTORS INFLUENCING MARINE CARBONATE SOURCE ROCK FORMATION

Chen J.; Zhang S.; Sun S.; Wu Q. (2006)

Distribution area of marine carbonate sediment in our country amount to about 3 million square kilometers and it has been considered as the potential petroleum exploration area all the time. But till today the exploration ...
ND, SR AND PB ISOTOPIC GEOCHEMISTRY OF PALEO-MESOPROTEROZOIC ALKALINE-RICH INTRUSIONS FROM THE NORTHERN PART OF THE NORTH CHINA CRATON: EVIDENCE OF THE LITHOSPHERIC MANTLE ENRICHMENT

Ren K.X.; Yan G.H.; Cai J.H.; Mu B.L.; Li F.T.; Chu Z.Y. (2006)

The Paleo-Mesoproterozoic alkaline-rich intrusive rocks, mostly distributed in or near Yan-Liao triple-junction aulacogen system and Liao-Ji aulacogen along the north part of the North China Craton (NCC), are composed of ...
EXPERIMENTAL STUDY ON SUPPER-HIGH PRESSURE FLUIDS IN THE UPPER MANTLE USING DIAMOND ANVIL CELL

Hu S.; Zhang R.; Zhang X. (2006)

The deep earth fluids compose mainly NaCl-H2O. The properties of the earth fluids are getting to change with their locations in the different depth, form low temperature and pressure in the shallow to high temperature and ...
CS-ENRICHED MINERALS AND THEIR SIGNIFICANCE ON NUCLEAR WASTE DISPOSAL

Hu H.; Wang R.; Xu S.; Zhang A. (2006)

Pollucite, Cs-analogue of micas and Cs-enriched beryl are the common Cs-enriched minerals in nature. They all occur in the central part or exocontact wall rocks of the rare-element granites and LCT (Lithium-Cesium-Tantalum)-type ...
FISSION-TRACK EVIDENCE FOR THE EXHUMATION HISTORY OF BOGDA - HARLIK MOUNTAINS, XINJIANG SINCE THE CRETACEOUS

Zhu W.; Shu L.; Sun Y.; Wang F.; Zhao Z.; Wan J. (2006)

Fifteen apatite samples and five zircon samples from volcanic rocks and granites in Bogda - Harlik mountains were analysed. The apatite ages range from 109.3 to 11.9Ma and the zircon ages are within the range 81. 7-56.8 ...
AGE CALIBRATION FOR THE BOUNDARY BETWEEN LOWER AND MIDDLE TRIASSIC BY STRONTIUM ISOTOPE STRATIGRAPHY IN EASTERN SICHUAN

Huang S.; Pei C.; Hu Z.; Wu S.; Sun Z.; Qing H. (2006)

In Southern China, Geologists normally take the volcanic ash bed (with the thickness from 10 to 50 cm) as the boundary for marine Lower and Middle Triassic (i. e. the boundary between Anisian and Olenekian). The volcanic ...
IMAGE OF CRUST AND UPPER MANTLE STRUCTURE ALONG THE ARRAY FROM FUYUN TO KUERLE BY P-TO-S CONVERTED WAVES

Li H.; Yu G.; Jiang M.; Wang Y.; Zhang L. (2006)

Teleseismic receiver functions, RFs, allow us to image the spatial variation of the converters in crust and upper mantle along the array from Fuyun to Kuerle. Some discontinuous north-dipping mantle converters are seen ...
TWO MAIN FORMATION EPISODES OF FERROMANGANESE CRUSTS IN THE PACIFIC OCEAN

Wu G.; Zhang H.; Liu J.; Zhou H.; Pulyaeva I.; Ling H. (2006)

By the synthesis study for three central Pacific ferromanganese crusts (hereinafter for short as crusts) of their biostratigraphy, structure and element geochemistry on the section along their growth directions, it was ...
GEOCHEMISTRY OF GNEISSIC ALKALINE GRANITES IN DONGHAI COUNTY, JIANGSU PROVINCE, AND ITS TECTONIC SIGNIFICANCES

Hu J.; Qiu J.; Wang R.; Jiang S.; Ni P.; Yu J. (2006)

The Donghai region is tectonically located in the southwestern margin of the Su-Lu Orogenic Belt. Several Neoproterozoic gneissic alkaline granite plutons, with typical mineral assemblages of quartz + K-feldspar + ...
40AR/39AR GEOCHRONOLOGY, GEOCHEMICAL AND SR-ND-O ISOTOPIC CHARACTERISTICS OF THE HIGH-MG ULTRAPOTASSIC ROCKS IN LHASA BLOCK OF TIBET: IMPLICATIONS IN THE ONSET TIME AND DEPTH OF NS-STRIKING RIFT SYSTEM

Ding L.; Xu X.; Zhang Q.; Lai Q.; Yue Y.; Cai F. (2006)

High-Mg ultrapotassic rocks present in the NS-striking rift system of Lhasa Block in Tibetan Plateau. Geochemically these High-Mg ultrapotassic rocks are characterized by relatively high SiO2 (53% ~ 50%), and high K2O (7% ...

Now showing items 1121-1140 of 40749

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