Results 11 to 20 of about 47,421 (235)

Geochemical and Tectonic Setting of Trachyte rock withinAvromanCarbonite Formation, Zagros Suture Zone,Kurdistan Region/ Northeastern Iraq. [PDF]

open access: yesKirkuk Journal of Science, 2018
Trachyte extrusion rocks exposed as dyke cutting Avroman carbonate formation that is part of northwestern Zagros suture zone.Petrographical study combined with EMPA study reveals that these trachyte rock composed of essentially Plagioclase and ...
Sabah Ismail, Shleer Abdul-Qadir
doaj   +1 more source

A new Late Triassic dipteridacean fern from the Paso Flores Formation, Neuquén Basin, Argentina [PDF]

open access: yesActa Palaeontologica Polonica, 2021
Sterile and fertile fronds of dipteridacean ferns from the Paso Flores Formation (late Norian–Rhaetian) at Cañadón de Pancho area, south of the Neuquén Province, Patagonia (Neuquén Basin), Argentina, are described.
SILVIA CRISTINA GNAEDINGER   +1 more
doaj   +1 more source

First record of a Late Jurassic rhamphorhynchine pterosaur from Gondwana [PDF]

open access: yesActa Palaeontologica Polonica, 2021
We describe partial remains of a non-pterodactyloid pterosaur from Upper Jurassic levels of the Atacama Desert in northern Chile. The material includes a left humerus, a possible dorsal vertebra, and the shaft of a wing phalanx, all preserved in three ...
Jhonatan Alarcón-Muñoz   +5 more
doaj   +1 more source

The unexpected survival of an ancient lineage of anseriform birds into the Neogene of Australia: the youngest record of Presbyornithidae [PDF]

open access: yesRoyal Society Open Science, 2016
Presbyornithids were the dominant birds in Palaeogene lacustrine assemblages, especially in the Northern Hemisphere, but are thought to have disappeared worldwide by the mid-Eocene.
Vanesa L. De Pietri   +4 more
doaj   +1 more source

Lower–Middle Ordovician brachiopods from the Eastern Cordillera of Peru: biostratigraphical and palaeobiogeographical significance [PDF]

open access: yesEstonian Journal of Earth Sciences, 2023
Lower–Middle Ordovician brachiopods are well known from the Central Andean Basin of Argentina and Bolivia, but relatively little data comes from its northern prolongation in the Altiplano and the Eastern Cordillera of Peru.
Jorge Colmenar   +2 more
doaj   +1 more source

Rifting and arc-related early Paleozoic volcanism along the North Gondwana margin: geochemical and geological evidence from Sardinia (Italy) [PDF]

open access: yes, 2012
Three series of volcanic rocks accumulated during the Cambrian to Silurian in the metasediment-dominated Variscan basement of Sardinia. They provide a record of the changing geodynamic setting of the North Gondwana margin between Upper Cambrian and ...
BUZZI L   +3 more
core   +1 more source

Towards the development of a GHG emissions baseline for the Agriculture, Forestry and Other Land Use (AFOLU) sector, South Africa

open access: yesClean Air Journal, 2016
South Africa is a signatory to the United Nations Framework Convention on Climate Change (UNFCCC) and as such is required to report on Greenhouse gas (GHG) emissions from the Energy, Transport, Waste and the Agriculture, Forestry and Other Land Use ...
L.B. Stevens   +5 more
doaj   +1 more source

Characterising the impact of rainfall on dustfall rates

open access: yesClean Air Journal, 2016
Soil moisture increased the cohesion potential between particles, reducing the ability of the particle to be entrained. Dust suppression techniques are designed to increase soil moisture and therefore soil cohesion through the application of water or ...
J. Lodder   +3 more
doaj   +1 more source

New Cretaceous lungish material from southern South America, Argentina [PDF]

open access: yesResearch & Knowledge, 2017
Dipnoi is a large group of sarcopterygians which ranges from the Early Devonian to the present. Traditionally, it was considered that their taxonomic diversity decreased at the end of Paleozoic.
P. Guillermina Giordano   +2 more
doaj   +1 more source

Detrital-zircon geochronology and provenance of the Ocloyic synorogenic clastic wedge, and Ordovician accretion of the Argentine Precordillera terrane [PDF]

open access: yes, 2015
The Precordillera terrane in northwestern Argentina is interpreted to be anexotic (Laurentian) continental fragment that was accreted to western Gondwanaduring the Ordovician. One prominent manifestation of the subductionand collision process is a Middle?
Astini, Ricardo Alfredo   +3 more
core   +1 more source

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