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Tectonic and petrogenetic evolution of sub-horizontal granulite-grade fabric in lower continental crust: Constraints on lower crustal flow from the western Canadian Shield
Crustal flow orogeny the andes the Himalayas the earth's crust granulite
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2014/10/22
Ductile, weak flow of continental lower crust is inferred for a number of orogenic systems, including the Andes and the Himalayan-Tibetan system. Sub-horizontal, high-temperature fabrics in rare expos...
Boundary Element Method Numerical Modeling: An Approach for Analyzing the Complex Geometry and Evolution of the San Gorgonio Knot, San Andreas Fault, Southern California
Boundary Element Method Numerical Modeling Complex Geometry Evolution of the San Gorgonio Knot San Andreas Fault Southern California
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2014/10/22
The San Andreas fault forms the right lateral transform boundary between the North American and Pacific tectonic plates. At various locations along the San Andreas fault the geometry of the fault surf...
Evolution Of Volatile Content Of Th Parent Magma Of Th 1875 Eruption Of Askja Volcano, Iceland
Evolution Of Volatile Content Parent Magma The 1875 Eruption Askja Volcano, Iceland
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2014/10/21
The Askja central volcano is located in the northeastern rift zone in central Iceland. The bulk of the eruption of Askja on March 28-29 1875 consisted of a plinian eruption that lasted 6-7 hours, prod...
Structural Organization and Tectono-Metamorphic Evolution of the Pan-African Suture Zone: Case of the Kabye and Kpaza Massifs in the Dahomeyide Orogen in Northern Togo (West Africa)
Togo Pan-African Dahomeyide Suture Zone Microstructures
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2013/3/11
The Kabye and Kpaza Massifs correspond to two main granulitic suites in the suture zone of the Pan-African Dahomeyide orogenic belt, in northern Togo. The Kabye Massif is composed of an important west...
U-Pb Geochronology of the Jebba Granitic Gneiss and Its Implications for the Paleoproterozoic Evolution of Jebba Area, Southwestern Nigeria
Jebba Area Nigeria Granitic Gneiss U-Pb Dating Paleoproterozoic Eburnean Orogeny
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2013/3/11
Jebba area southwestern Nigeria forms part of the Nigerian basement complex which lies in the Neoproterozoic PanAfrican mobile belt. It is underlain by several lithological units among which is a poly...
Helium and Argon Isotopic Studies of Fossil Material and the Theoretical Evolution of He and Ar in Earth’s Atmosphere through Time
Fossils Argon Helium Isotopes Atmospheric Evolution
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2013/3/11
We analyzed the elemental concentrations and the isotopic compositions of helium and argon in Cambrian to Jurrassic aged Gastropod, Ammonite and Trilobite fossils in order to examine variation in thes...
Structural Evolution of a Precambrian Segment: Example of the Paleoproterozoic Formations of the Mako Belt (Eastern Senegal, West Africa)
Kedougou Kenieba Inlier Paleoproterozoic Transpression
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2013/3/7
The western part of the Kedougou Kenieba Inlier is located in the West African Craton. It consists of paleoproterozoic NE-trending elongate belts (subprovinces) of metavolcanic and granitic rocks that...
Emplacement and Evolution History of Pegmatites and Hydrothermal Deposits, Matale District, Sri Lanka
Hydrothermal veins Pegmatites Emplacement history
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2013/3/7
Excellent outcrops in Matale Sri Lanka provide unique insight into the emplacement and evolution history of hydrothermal and pegmatitic rocks in the central highlands of Sri Lanka. Field, structural, ...
New Constraints from Pb-Evaporation Zircon Ages of the Méiganga Amphibole-Biotite Gneiss, Central Cameroon, on Proterozoic Crustal Evolution
Metasediment 207Pb/206Pb Ages Crustal Evolution
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2013/3/6
The amphibole biotite gneiss (ABGn) in the Méiganga area forms part of a meta volcano-sedimentary sequence of the Adamawa Yade domain (AYD), Central African Fold Belt (CAFB). This sequence shows affin...
Thermal Evolution of the Permo−Triassic Karakaya Subduction-accretion Complex Between the Biga Peninsula and the Tokat Massif (Anatolia)
Thermal Evolution the Permo− Triassic Karakaya Subduction-accretion Complex the Biga Peninsula the Tokat Massif
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2010/10/14
The results of the combined application of a series of analytical methods (clay mineralogy, vitrinite reflectance, Raman microspectroscopy) placed tight constraints on the thermal evolution of the Kar...
Study of the precipitation evolution in Catalonia using a mesoscale model (1971–2000)
Study of the precipitation evolution Catalonia mesoscale model
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2010/9/10
In this work the MM5 mesoscale model is used in order to analyse the temporal evolution of the precipitation for the period 1971–2000 in Catalonia (NE Iberian Peninsula). Three one-way nested domains ...
Regional scale analysis of the altimetric stream network evolution
Regional scale analysis altimetric stream
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2010/1/27
Floods result from the limited carrying capacity of stream channels when compared to the discharge peak value. The transit of flood waves - with the associated erosion and sedimentation processes - of...
Sinkhole genesis and evolution in Apulia, and their interrelations with the anthropogenic environment
sinkhole genesis and evolution the anthropogenic environment
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2009/12/14
Sinkhole development occurs in many areas of the world where soluble rocks crop out. Sinkholes are generally the surface expression of the presence of caves and other groundwater flow conduits in carb...
Mass balance evolution of Martial Este Glacier, Tierra del Fuego (Argentina) for the period 1960–2099
Mass balance evolution Martial Este Glacier Tierra del Fuego
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2010/1/28
The Martial Este Glacier in southern Tierra del Fuego was studied in order to estimate the surface mass balance from 1960 until 2099. For this reason a degree-day model was calibrated. Air temperature...
The pecularities of shear crack pre-rupture evolution and distribution of seismicity before strong earthquakes
shear crack pre-rupture evolution seismicity strong earthquakes
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2009/12/9
Several methods are presently suggested for investigating pre-earthquake evolution of the regions of high tectonic activity based on analysis of the seismicity spatial distribution. Some precursor sig...