Results 21 to 30 of about 47,421 (235)

Uncertainty of dustfall monitoring results

open access: yesClean Air Journal, 2017
Fugitive dust has the ability to cause a nuisance and pollute the ambient environment, particularly from human activities including construction and industrial sites and mining operations.
M.A van Nierop   +3 more
doaj   +1 more source

Provenance history of a Late Triassic-Jurassic Gondwana margin forearc basin, Murihiku Terrane, North Island, New Zealand: petrographic and geochemical constraints [PDF]

open access: yes, 2004
The Murihiku Terrane in the North Island was a forearc basin adjacent to a volcanic arc along the eastern margin of Gondwana during the Mesozoic. The rocks that infill the basin are mainly volcaniclastic sandstones and mudstones, often turbiditic, with ...
Briggs, Roger M.   +2 more
core   +2 more sources

The lichen genera Gondwania and Transdrakea gen. nov. ( Teloschistaceae ) - speciation in three southern continents

open access: yesPlant and Fungal Systematics, 2023
Within the lichen family Teloschistaceae , a high number of genera are restricted to the extreme southern part of the Southern Hemisphere. The taxonomy and phylogeny of the southern genus Gondwania have been analyzed based upon fieldwork in Antarctica,
Ulrik Søchting   +2 more
doaj   +1 more source

Diversity of Cretaceous continental actinopterygians from Argentina, South America [PDF]

open access: yesResearch & Knowledge, 2017
South America holds a signiicant number of continental ish-bearing deposits of Cretaceous age. The principal purpose of the current article is to illustrate the diversity of continental actinopterygian assemblages of the main Cretaceous localities from ...
P. Guillermina Giordano
doaj   +1 more source

From source to sink in central Gondwana: Exhumation of the Precambrian basement rocks of Tanzania and sediment accumulation in the adjacent Congo basin [PDF]

open access: yes, 2016
Apatite fission track (AFT) and (U-Th)/He (AHe) thermochronometry data are reported and used to unravel the exhumation history of crystalline basement rocks from the elevated (>1000 m above sea level) but low-relief Tanzanian Craton.
Brown, Roderick   +5 more
core   +1 more source

A review of Mawsonia from the Ilhas Group, Marfim Formation (? Late Hauterivian), Recôncavo Basin [PDF]

open access: yesResearch & Knowledge, 2017
The Mawsoniidae family includes six genera Chinlea, Diplurus, Trachymetopon, Parnaibaia, Mawsonia and Axelrodichthys with an almost worldwide occurrence ranging from the Triassic to the Late Cretaceous.
Camila Cupello   +2 more
doaj   +1 more source

Timing of the magmatism of the paleo-Pacific border of Gondwana: U-Pb geochronology of Late Paleozoic to Early Mesozoic igneous rocks of the north Chilean Andes between 20° and 31°S [PDF]

open access: yes, 2014
Indexación: Web of Science; ScieloABSTRACT. U-Pb zircon geochronological data provide record of about 130 Ma of igneous activity in the Andes of northern Chile, which extended episodically from the latest Early Carboniferous to Early Jurassic (328-194 Ma)
Maksaev, Víctor   +2 more
core   +1 more source

The tarphyceratid cephalopod Trocholites in the Middle–Upper Ordovician of the Prague Basin —the Baltican element in peri-Gondwana [PDF]

open access: yesActa Palaeontologica Polonica, 2023
The vast majority of cephalopods of the order Tarphyceratida are known from regions that were located at mid- or low palaeolatitudes during the Ordovician (mainly Baltica, Laurentia, and Chinese palaeoblocks).
Martina Aubrechtová   +2 more
doaj   +1 more source

Asymmetric continental deformation during South Atlantic rifting along southern Brazil and Namibia [PDF]

open access: yes, 2017
Plate restoration of South America and Africa to their pre-breakup position faces the problem of gaps and overlaps between the continents, an issue commonly solved with implementing intra-plate deformation zones within South America.
Koehn, Daniel   +2 more
core   +1 more source

Late Ordovician scolecodonts and chitinozoans from the Pin Valley in Spiti, Himachal Pradesh, northern India [PDF]

open access: yesActa Palaeontologica Polonica
The end of the Ordovician witnessed major perturbations in the ecosystem, seriously affecting global marine biodiversity. Nevertheless, some marine organism groups and their crisis-bound palaeogeographic distribution are still understudied.
PETRA TONAROVÁ   +8 more
doaj   +1 more source

Home - About - Disclaimer - Privacy