Results 91 to 100 of about 64,380 (320)

Silurian stratigraphy of Central Iran – an update

open access: yes, 2017
The Silurian biostratigraphy, lithostratigraphy, and facies of Central Iran including the Kashmar (Boghu Mountains), Tabas (Derenjal Mountains, Ozbak-Kuh), Anarak (Pol-e Khavand) and Kerman regions is reviewed and updated.
V. Hairapetian   +4 more
semanticscholar   +1 more source

New Geochronological Constraints on the Late Palaeozoic Tarija Basin, Southern Bolivia: Tectonic and Palaeoclimatic Implications

open access: yesTerra Nova, EarlyView.
ABSTRACT The Carboniferous‐Permian Tarija basin of southern Bolivia evolved under major tectonic and climatic influence. The timing of transition from glacially influenced to arid conditions, after the Gondwanide tectonic event, has been based mainly on palynological correlations.
Felipe R. Ferroni   +4 more
wiley   +1 more source

Some new palynomorphs from the Silurian of the Quetame Massif, Cordillera Oriental, Colombia, South America

open access: yesBoletín Geológico, 1994
During a palynological investigation of Paleozoic series in the Colombian Cordillera Oriental Silurian-indicating fossils were found in Colombia. In this paper we describe four palynomorphs which were significant for the Silurian of the Quetame Massif.
Klaus F. Prossl, Joachim R. Grosser
doaj   +1 more source

Stratabound arsenic and vein antimony mineralisation in Silurian greywackes at Glendinning, south Scotland [PDF]

open access: yes, 1983
Stratiform and disseminated pyrite-arsenopyrite concentrations are overprinted by fracturecontrolled polymetallic mineralisation including stibnite through at least tens of metres of Silurian sediments at Glendinning, near Langholm.
Gallagher, M.J.   +10 more
core  

Lower Wenlock black shales in the northern Holy Cross Mountains, Poland: Sedimentary and geochemical controls on the Ireviken Event in a deep marine setting [PDF]

open access: yes, 2016
The stratigraphic variability and geochemistry of Llandovery/Wenlock (L/W) Series boundary sediments in Poland reveals that hemipelagic sedimentation under an anoxic/euxinic water column was interrupted by low density bottom currents or detached diluted ...
Bond, David P. G.   +3 more
core   +1 more source

New results of paleomagnetic studies of red-colored Silurian deposits

open access: yesГеофизический журнал, 2014
New results of paleomagnetic studies of red-colored rocks of the Late Silurian of southwestern Ukraine (Podolian area, the Dniester river basin) have been presented.
E. Polyachenko   +6 more
doaj   +1 more source

The largest Silurian vertebrate and its palaeoecological implications

open access: yesScientific Reports, 2014
An apparent absence of Silurian fishes more than half-a-metre in length has been viewed as evidence that gnathostomes were restricted in size and diversity prior to the Devonian.
Brian Choo   +4 more
semanticscholar   +1 more source

Silurian graptolite biostratigraphy of the Röstånga-1 drill core, Scania:a standard for southern Scandinavia [PDF]

open access: yes, 2014
The Rostanga-1 core from west-central Scania provides the most complete succession of the Sandbian (Upper Ordovician) through lower Telychian (Silurian, Llandovery) strata of southern Scandinavia. The Hirnantian is identified in the Kallholn Formation by
Ahlberg, Per   +3 more
core   +2 more sources

Palynomorphs from abra límite, zenta range, Eastern Cordillera, Northwestern Argentina [PDF]

open access: yes, 2010
This study presents the first Devonian palynological record in the Zenta Range in Eastern Cordillera, Argentina. Two associations were recognized on the basis of differences in palynomorphs and palynofacies.
Di Pasquo Lartigue, Maria   +1 more
core   +1 more source

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