Results 31 to 40 of about 47,421 (235)

Unnoticed in the tropics: phylogenomic resolution of the poorly known arachnid order Ricinulei (Arachnida) [PDF]

open access: yesRoyal Society Open Science, 2015
Ricinulei are among the most obscure and cryptic arachnid orders, constituting a micro-diverse group with extreme endemism. The 76 extant species described to date are grouped in three genera: Ricinoides, from tropical Western and Central Africa, and the
Rosa Fernández, Gonzalo Giribet
doaj   +1 more source

Inland extent of the Weddell Sea Rift imaged by new aerogeophysical data [PDF]

open access: yes, 2012
Peer ...
Bingham, Robert George   +8 more
core   +1 more source

U-Pb Zircon Geochronology of Detrital and Ash Fall Deposits of the Southern Paraná Basin: A Contribution for Provenance, Tectonic Evolution, and the Paleogeography of the SW Gondwana

open access: yesGeosciences, 2023
Zircon U-Pb geochronology was applied to investigate the provenance, depositional ages, and paleogeography of the southwestern Gondwana in detrital and ash fall sediments from Carboniferous to Jurassic succession of the southern Paraná Basin.
Ruy Paulo Philipp   +10 more
doaj   +1 more source

Deconvolving the pre-Himalayan Indian margin – tales of crustal growth and destruction [PDF]

open access: yes, 2018
The metamorphic core of the Himalaya is composed of Indian cratonic rocks with two distinct crustal affinities that are defined by radiogenic isotopic geochemistry and detrital zircon age spectra.
Ahmad   +132 more
core   +4 more sources

Zircon U-Pb dating of Mesozoic volcanic and tectonic events in northwest Palmer Land and southwest Graham Land, Antarctica [PDF]

open access: yes, 2009
New whole rock Rb-Sr and zircon U-Pb geochronological data and Sm-Nd isotopic data are presented from the central magmatic arc domain of the Antarctic Peninsula in the area of northwest Palmer Land and southwest Graham Land, Rb-Sr isochrons indicate an ...
Flowerdew, Michael   +5 more
core   +1 more source

The Gondwanan Green Alga Tasmanites sp. in the Permian Lacustrine Deposits of West Timor

open access: yesIndonesian Journal on Geoscience, 2019
This paper discusses palynological research on the Permian lacustrine sediments of West Timor. Ten outcrop samples were collected from a 5 m high cliff.
Eko Budi Lelono
doaj   +1 more source

A neoproterozoic age for the chromitite and gabbro of the Tapo Ultramafic Massif, Eastern Cordillera, Central Peru, and its tectonic implications [PDF]

open access: yes, 2011
The ultramafic-mafic rocks of the Tapo Complex are exposed in the Eastern Cordillera of the Central Peruvian Andes. This complex is composed of serpentinised peridotites and metabasites with some podiform chromitite lenses and chromite disseminations and
Amaral   +25 more
core   +3 more sources

Retraction Note: Synthesis and photoluminescence properties of CaMgAl10O17:Sm3+ phosphor for n-UV solid-state lighting (PCSS: (2024), 25(2), (245-249), https://doi.org/10.15330/pcss.25.2.245-249)

open access: yesФізика і хімія твердого тіла
The Editor-in-Chief has retracted this article. The PCSS has retracted paper "Synthesis and photoluminescence properties of CaMgAl10O17:Sm3+ phosphor for n-UV solid-state lighting".
R.M. Yerojwar   +4 more
doaj   +1 more source

Biostratigraphy of Acritarchs and Chitinozoans in Ordovician Strata from the Fazel Abad Area, Southeastern Caspian Sea, Alborz Mountains, Northern Iran: Stratigraphic Implications [PDF]

open access: yesJournal of Sciences, Islamic Republic of Iran, 2017
Sixty-four surface samples from the Lower Palaeozoic rock units (mainly Lalun,Abastu and Abarsaj formations) near Kholin-Darreh village in the Fazel Abad area,southeastern the Caspian Sea, Northern Iran, were analyzed to determine their agerelationships.
M. Ghavidel-syooki
doaj  

New Permo-Carboniferous geochemical data from central Thailand: implication for a volcanic arc model [PDF]

open access: yes, 1991
Current ideas and models of geotectonic reconstructions of Southeast Asia are reviewed and new data on Late Carboniferous through Middle Permian tuffites and sills from central Thailand are presented in the light of the problems of Southeast Asian ...
Altermann   +57 more
core   +1 more source

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