نتایج جستجو برای: sheeted dykes

تعداد نتایج: 1118  

2014
Michael Krumbholz Christoph F. Hieronymus Steffi Burchardt Valentin R. Troll David C. Tanner Nadine Friese

Magmatic sheet intrusions (dykes) constitute the main form of magma transport in the Earth's crust. The size distribution of dykes is a crucial parameter that controls volcanic surface deformation and eruption rates and is required to realistically model volcano deformation for eruption forecasting. Here we present statistical analyses of 3,676 dyke thickness measurements from different tectoni...

2004
Stephanie Larissa Marsh

The goal of geovisualization is discovery and this can be hindered by a number of factors, including inadequate tools, that represent significant obstacles to the geovisualization thought process and require considerable effort to overcome (Dykes, forthcoming). Good software design using methods to support interaction can reduce these, but impediments are increasingly likely as geovisualization...

Journal: :journal of tethys 0

in taleghan, olivine basalt-basaltic andesite dykes as part of tertiary mamgmatic activities in central and western alborz zone, intruded into both karaj formation and late eocene-oligocene volcanic rocks. these dykes have similar geochemical characteristic which suggest that they are originated from a common source. on the primitive mantle normalized spider diagram, the dykes are characterized...

2000
Neil C. Mitchell Maurice A. Tivey Pascal Gente

Observations from 145 submersible dives are used to create a database of mid-ocean ridge scarp topography and lithology. Seafloor lithologies are classified into extrusives, basaltic talus, dykes, gabbros and serpentinites, and the dive locations are broadly classified according to whether they are close to transform valleys and as a function of ridge spreading rate. The database is used to det...

Journal: :Offa's Dyke Journal 2020

2013
Tadeusz Marek PERYT

Nep tu nian dykes were re cently re corded within the Mid dle Mio cene (Up per Badenian and Lower Sarmatian) Medobory reef com plex of the Carpathian Fore land in west ern Ukraine. The Up per Badenian reefs are cut by a reg u lar, semi-per pen dic u lar net work of in ter sect ing fis sures that pen e trate the Badenian reef lime stone down for more than 10 m. The dykes are filled by sev eral g...

رضایی کهخایی, مهدی , رهبر, رضا , قاسمی, حبیب ا.. ,

The Lakhshak intrusive assemblage consisting of a granodiorite pluton and monzodiorite and dacite dykes are  parts of Zahedan-Saravan granitoid belt which cover about 90.5 km2.. Dykes are parallel with NE-SW trends and comprise about 20-30 percent of the pluton.  The granodiorite plutonis granular in texture and comprises mainly consists of plagioclase, K-feldspar, quartz, green hornblende, and...

Journal: :Proceedings of the Japan Academy, Series A, Mathematical Sciences 1982

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