Results 91 to 100 of about 89,166 (344)
Геофизический журнал, 2015 An idea of the endogenous nature of ferriferous and ferriferous-carbonate rocks, forming numerous relatively small size of deposits and ore manifestations in the region of the Middle Bug called Pobuzhsky iron-ore district has been expressed on the ...
V. Entin +3 more
doaj +1 more source
Application of palynological data to the chronology of the Palaeogene lava fields of the British Province: implications for magmatic stratigraphy [PDF]
, 1997 New high-precision ages, determined from palynomorph assemblages within intercalated sedimentary deposits, are presented for the Palaeogene lava fields (Skye, Mull and Antrim) of the British Province. These data reveal very rapid averaged eruption rates (
Bell, B.R., Jolley, D.W.
core +1 more source
Sedimentology, EarlyView.ABSTRACT Despite high convergence velocity, the southern Ryukyu subduction has relatively low and sparse instrumental seismicity, in contrast with the Yaeyama Islands, hit by huge tsunamis over the last few thousand years. This study explores the potential of deep marine sediments to record past large earthquakes and tsunamis.
Nathalie Babonneau +52 more
wiley +1 more source
Tracking Sediment Mixing Along the Lower Danube River From the Carpathians to the Black Sea
Terra Nova, EarlyView.ABSTRACT We use detrital zircon U–Pb geochronology as a sediment provenance tracer in modern river sands to better understand how tectonic, climatic, and anthropogenic processes modulate sediment transport dynamics of the Carpathians to the Black Sea source to sink system.
Iulian Pojar +5 more
wiley +1 more source
Siberian flood basalt magmatism and Mongolia-Okhotsk slab dehydration [PDF]
, 2008 Experimental data combined with numerical calculations suggest that fast subducting slabs are cold enough to carry into the deep mantle a significant portion of the water in antigorite, which transforms with increasing depth to phase A and then to phase ...
Alexei V. Ivanov, Konstantin D. Litasov
core +1 more source
Mineral chemistry of late Variscan gabbros from central Spain: constraints on crystallisation processes and nature of the parental magmas [PDF]
, 2015 © 2016. Universidad Complutense de Madrid. The commercial rights of the printed and online versions of Journal of Iberian Geology are property of the Universidad Complutense de Madrid (UCM) and the Consejo Superior de Investigaciones CientÍficas (CSIC),
Jeffries, T +3 more
core +3 more sources
Forearc Depressions Develop in Warm Subduction Zones by Underplating‐Induced Crustal Flexure
Terra Nova, EarlyView.ABSTRACT We propose a model for forearc depression formation in warm subduction zones. Forearc depressions overlie some ocean‐continent subduction zones and form between a forearc high and volcanic arc. Forearc highs coincide with 51–91 mGal free‐air gravity anomalies and km‐scale reflector bands in seismic sections, indicating they comprise crust ...
Chuqiao Huang +2 more
wiley +1 more source
When do we need pan-global freeze to explain ^(18)O-depleted zircons and rocks? [PDF]
, 2011 Rocks with δ^(18)O values of less than 5‰ SMOW (Standard Mean Ocean Water) contain oxygen derived from ∼0‰ seawater or meteoric (rain or melted snow,
Bindeman, Ilya
core +1 more source
Upper cretaceous magmatic suites of the Timok magmatic complex
Geoloski anali Balkanskoga poluostrva, 2010 The Upper Cretaceous Timok Magmatic Complex (TMC) developed on a continental crust composed of different types of Proterozoic to Lower Cretaceous rocks. The TMC consists of the magmatic suites: Timok andesite (AT) - Turonian-Santonian, Metovnica epiclastite (EM) - Coniacian-Campanian, Osnic basaltic andesite (AO) and Jezevica andesite (AJ) -
openaire +3 more sources