نتایج جستجو برای: intra oceanic island arc
تعداد نتایج: 201119 فیلتر نتایج به سال:
The arrival of humans on oceanic islands has precipitated a wave of extinctions among the islands' native birds. Nevertheless, the magnitude of this extinction event varies markedly between avifaunas. We show that the probability that a bird species has been extirpated from each of 220 oceanic islands is positively correlated with the number of exotic predatory mammal species established on tho...
PREMISE OF THE STUDY Oceanic islands offer unparalleled opportunities to investigate evolutionary processes such as adaptation and speciation. However, few genomic resources are available for oceanic island endemics. In this study, we publish transcriptome sequences from three Macaronesian endemic plant species (Argyranthemum broussonetii [Asteraceae], Descurainia bourgaeana [Brassicaceae], and...
Abstract The magmatic response above subducting ocean lithosphere can range from weak to vigorous and a narrow zone widely distributed. small young Cascade Arc, riding on the margin of tectonically active North American plate, has expressed nearly this entire volcanic activity. This allows an unusually good examination arc initiation early growth. We review tectonic controls Cascade-related mag...
Ophiolitic rocks in the southeastern part of the Zagros Orogenic Belt can be separated from southwest to northeast, into two groups: the Neyriz ophiolites and the Naien–Shahrebabak–Baft ophiolites. The southeast sector of Sanandaj-Sirjan wasdelimited by the two nearly synchronous ophiolitic belts in its southwestern and northeastern margins. In this study, new ophiolitic formation models were u...
Seasonal and inter-annual variability in satellite-derived estimates of near-surface chlorophyll a concentration and primary production were examined in three regimes (shelf, slope and deep oceanic waters) off Washington and Vancouver Island from 1998 to 2002. Wind-induced upwelling predominates in late spring and summer, coinciding with the maximum in solar radiation, leading to increased accu...
This study investigates the provenance and tectonic background of lower Silurian Longmaxi Formation black shale Yanyuan Basin in western Kangdian ancient land provides guidance for gas exploration development area. The mineral petrological geochemical characteristics this area have been studied detail. is mainly a passive continental margin environment, but also has attributes an active island ...
The article considers the geological framework of a large orogenic structure in northeastern Eurasia - Verkhoyansk fold-and-thrust belt (VFTB), formed Late Mesozoic on eastern margin Siberian craton. Zoning geopotential fields and authors' interpretation frequency-energetic characteristics along 3-DV reference geo-physical profile provided basis for modeling deep VFTB adjacent structures There ...
Island-arc accretion during the assembly of Gondwana has been widely regarded as main mechanism for Neoproterozoic crustal growth in Arabian-Nubian Shield (ANS). However, processes involved to transform newly accreted juvenile terranes into a typical continental crust remain unclear. Here, we present geochemical, isotopic, and U-Pb geochronological data from El-Shadli volcanic province (80 km ×...
This paper concerns estimation of the uncertainty of the mean wind speed when estimated from a Doppler lidar arc scan, i.e. a certain fraction of a normal conical scan. The subject is timely, as more and more scanning Doppler lidars are used, especially in the wind energy industry. The authors has got accepted a similar paper in Journal of Oceanic and Atmospheric Technology (Wind Measurements f...
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