Results 111 to 120 of about 379,430 (254)

Activities of the JARE geology group for the Napier and Rayner Complexes, East Antarctica: an overview and perspective

Antarctic Record, 2003
Scientific activities and results of the JARE (Japanese Antarctic Research Expedition) geology group for the Napier and Rayner Complexes in Enderby Land, East Antarctica, are reviewed in relation to 1) publications of two detailed geologic maps as a ...
Hideo Ishizuka
doaj   +1 more source

Axial‐type olivine crystallographic preferred orientations: the effect of strain geometry on mantle texture [PDF]

, 2016
The effect of finite strain geometry on crystallographic preferred orientation (CPO) is poorly constrained in the upper mantle. Specifically, the relationship between shape preferred orientation (SPO) and CPO in the mantle rocks remains unclear.
Kruckenberg, Seth C., Anthony C. Withers, Cohen, Shaina M., Medaris Jr., L. Gordon, Seth C. Kruckenberg, EU-RHEOMANTLE: Evolution of mantle rheology in exhumed strike-slip faults, Vasileios Chatzaras, Shaina M. Cohen, Structural geology and EM, Withers, Anthony C., Bagley, Brian, Brian Bagley, Chatzaras, V., L. Gordon Medaris   +13 more
core   +1 more source

Petrography and mineral chemistry of wehrlites in contact zone of gabbro intrusions and mantle peridotites of the Naein ophiolite

Journal of Economic Geology, 2014
Introduction Geological background Ophiolites have played a major role in our understanding of Earth’s processes ranging from seafloor spreading, melt evolution and magma transport in oceanic spreading centers, and hydrothermal alteration and ...
Farhad Ghaseminejad, Ghodrat Torabi
doaj  

Report on workshop"Structure and evolution of Eurasia (super-) continent"

Antarctic Record, 2004
A workshop on Structure and evolution of Eurasia (super-) continent" was held on 23rd February 2004, at the National Institute of Polar Research with 29 participants.
Masaki Kanao
doaj   +1 more source

Mantle pseudo-isochrons revisited [PDF]

The 2.0 Ga pseudo-isochron age inferred from the mid-ocean ridge basalt 207Pb/204Pb against 206Pb/204Pb diagram is reexamined on the basis of a statistical box model of mantle processes.
Rudge, J. F.
core   +1 more source

An Oceanic Plateau Induced Subduction Zone Jump From Proto‐ to Paleo‐Tethys in East Kunlun, Northern Tibetan Plateau

Geochemistry, Geophysics, Geosystems
The relationship between the Proto‐Tethys and Paleo‐Tethys is still debated. Some researchers believe that the Paleo‐Tethys opened after the Proto‐Tethys closed, while others argue that they are the same ocean with two stages of subduction.
Rutao Zang, Yunpeng Dong, Dazhi Jiang, Dengfeng He, Shengsi Sun, Bo Hui, Bin Zhang   +6 more
doaj   +1 more source

MANTLE SOURCES OF GENERATION OF HYDROCARBONS: GEOLOGY-PHYSICAL SIGNS AND FORECAST-SEARCHING CRITERIONS OF MAPPING; REGULARITY OF AN OIL-AND-GAS-BEARING CAPACITY AS UNLOADING REFLEX OF MANTLE HYDROCARBON-SYSTEMS IN THE CRUST OF THE EARTH

Tectonics and Stratigraphy, 2015
In the conditions of the developed uncertainty concerning the nature of primary sources (donors) and the generation focal (reactionary chambers) of deep hydrocarbons, questions of the nature of donors and the sources of generation of deep hydrocarbons systems, the mechanism and ways of generation and in-source mobilization of hydrocarbons in the top ...
openaire   +3 more sources

Stability of (Mg,Fe)SiO3 perovskite and the structure of the lowermost mantle [PDF]

, 1992
Thermodynamic analysis shows that (Mg,Fe)SiO3 perovskite is stable throughout the likely pressure, temperature and compositional regime of the Earth's mantle.
Bukowinski, MST, Stixrude, L
core  

Life on Mars? The physiological perspective

Experimental Physiology, EarlyView.
Ronan M. G. Berg, Damian M. Bailey
wiley   +1 more source

Geology, Mantle Tomography, and Inclination Corrected Paleogeographic Trajectories Support Westward Subduction During Cretaceous Orogenesis in the North American Cordillera

Geoscience Canada, 2014
Geological evidence, including the presence of two passive margin platforms, juxtaposed and mismatched deformation between North America and more outboard terranes, as well as the lack of rift deposits, suggest that North America was the lower plate during both the Sevier and Laramide events and that subduction dipped westward beneath the Cordilleran ...
openaire   +2 more sources