Results 51 to 60 of about 38,033 (196)
Integrative Zoology, EarlyView.This study provides the first isotopic analysis of Oligocene mammals from Quebrada Fiera, Mendoza, Argentina, filling a major gap in South American paleontology. It reveals a latitudinal gradient in aridity due to the Andean rain shadow and highlights the role of (semi)permanent water bodies in sustaining diverse herbivore communities. Additionally, it
Dánae Sanz‐Pérez +4 more
wiley +1 more source
Testing General Relativity and gravitational physics using the LARES satellite
, 2012 The discovery of the accelerating expansion of the Universe, thought to be driven by a mysterious form of `dark energy' constituting most of the Universe, has further revived the interest in testing Einstein's theory of General Relativity.
Ciufolini, Ignazio +8 more
core +1 more source
Journal of Metamorphic Geology, EarlyView.ABSTRACT The absence of jadeite in regions where subduction of continental crust has been documented by other high‐pressure (HP) or ultrahigh‐pressure (UHP) minerals is striking. This study presents only the second discovery of jadeite in the crystalline rocks of the Erzgebirge, a region known for its occurrences of microdiamond, coesite and omphacite ...
Ondrej Lexa +3 more
wiley +1 more source
Seasonal gravity changes estimated from GRACE data
Geodesy and Geodynamics, 2010 Since 2002, the GRACE program has provided a large amount of high-precision data, which can be used to detect temporal gravity variations related to global mass re-distribution inside the fluid envelop of the surface of the Earth. In order to make use of
Zhengbo Zou +3 more
doaj +1 more source
Correction of broadband snow albedo measurements affected by unknown slope and sensor tilts [PDF]
The Cryosphere, 2016 Geometric effects induced by the underlying terrain slope or by tilt errors of the radiation sensors lead to an erroneous measurement of snow or ice albedo. Consequently, artificial diurnal albedo variations in the order of 1–20 % are observed. The
U. Weiser +4 more
doaj +1 more source
Improvements of the gravity field from satellite techniques as proposed to the European Space Agency [PDF]
, 1978 A summary of the European Earth Sciences Space Programme and the requirements for each gravity field mapping resulting from this programme are given. Three satellite experiments for gravity field improvement proposed to the European Space Agency in the ...
Reigber, C.
core +1 more source
Tertiary-Quaternary subduction processes and related magmatism in the Alpine-Mediterranean region [PDF]
, 2006 During Tertiary to Quaternary times, convergence between Eurasia and Africa resulted in a variety of collisional orogens and different styles of subduction in the Alpine-Mediterranean region.
Downes, Hilary +2 more
core +1 more source
Tracking Dehydration Reactions and Fossil Fluid Flux in Shear Zones Using Garnet Microstructures
Journal of Metamorphic Geology, EarlyView.ABSTRACT Shear zones act as preferential fluid pathways during prograde and retrograde stages of metamorphism. Nonetheless, we still have limited knowledge of the drainage and permeability of natural settings. The preserved signature of fluid in exhumed rocks provides insights into fluid flow during burial and exhumation.
Alessandro Petroccia +7 more
wiley +1 more source
Mid-mantle deformation inferred from seismic anisotropy [PDF]
, 2002 With time, convective processes in the Earth's mantle will tend to align crystals, grains and inclusions. This mantle fabric is detectable seismologically, as it produces an anisotropy in material properties—in particular, a directional dependence in ...
A Yeganeh-Haeri +34 more
core +4 more sources
Basic research for the geodynamics program [PDF]
Some objectives of this geodynamic program are: (1) optimal utilization of laser and VLBI observations as reference frames for geodynamics, (2) utilization of range difference observations in geodynamics, and (3) estimation techniques in crustal ...
core +4 more sources