Results 61 to 70 of about 1,487,618 (230)
Appraisal of Six Natural Mica Reference Materials for In Situ Rb‐Sr Geochronology
Geostandards and Geoanalytical Research, EarlyView.Key Points Evaluated six natural mica reference materials for in situ LA‐ICP‐MS/MS Rb‐Sr geochronology using geochemical, microstructural and isotopic characterisation. Identified robust primary reference materials: Mount Dromedary biotite (99.37 Ma) and Mica‐Fe biotite (307.75 Ma). La Posta biotite and Högsbo muscovite are suitable secondary reference
Hugo K.H. Olierook +38 more
wiley +1 more source
An Upper Devonian species of Aorocrinva
Annals of the Carnegie Museum, 1938 (Uploaded by Plazi from the Biodiversity Heritage Library) No abstract provided.
openaire +2 more sources
Sedimentology, EarlyView.ABSTRACT Seismic‐scale features such as deeply incised submarine valleys and mounded drifts together with ichnological features indicative of discontinuous sedimentation and erosional episodes have recently been documented from the Upper Cretaceous chalk in the southern Baltic Sea area.
Marcel Schlembach +6 more
wiley +1 more source
Sedimentology, EarlyView.ABSTRACT Thermodynamic constraints and empirical evidence often suggest that fabric‐retentive replacement dolomites are stable carbonate minerals that preserve ancient seawater properties. This study evaluates this hypothesis by examining the Upper Triassic Dolomia Principale in Northern Italy.
Vivien Folliot +8 more
wiley +1 more source
Gas exchange and pulmonary stress variations during SCUBA and breath‐hold diving in open seawater
The Journal of Physiology, EarlyView.Abstract figure legend Healthy, trained divers were studied before, during and after diving in open seawater with different techniques. SCUBA divers (diving to 15 or 40 m with air; cycling at depth) and breath‐hold divers (BHDs; sled‐assisted dives to 15, 25 or 40 m) underwent underwater and surface arterial blood gas (ABG) sampling.
Matteo Paganini +11 more
wiley +1 more source
Devonian lamprophyres from Mt Lyell, western Tasmania [PDF]
, 1992 Mica concentrated from a post-cleavage lamprophyre occurring at the Prince Lyell Mine, Queenstown, has yielded a K-Ar age of 363±3 Ma (latest Devonian).
Sutherland, FL +3 more
core +1 more source
An assessment of the groundwater resources based on infiltration recharge hydrogeological modeling
Известия высших учебных заведений: Геология и разведка, 2016 An assessment of the natural groundwater resources (GWR) of Devonian (middle and upper Famennian) aquifer was made in the area of research-assessment works for Smolensk city water supply.
S. O. Grinevskiy +2 more
doaj +1 more source
Stratigraphy of the Upper Devonian - Lower Carboniferous of south-west of Lyzha-Kyrtael swell (Pechora Plate eastward) [PDF]
Нефтегазовая геология: Теория и практика, 2023 A new local stratigraphic scheme is proposed for the upper Famennian - Serpukhovian interval of the south-west of Lyzha-Kyrtael Swell. The stratigraphic sequence is composed of the Famennian carbonates of the Kamenka Formation, the Famennian - middle ...
Zhuravlev A.V.
doaj
On the Upper Old Red Sandstone and Upper Devonian Rocks [PDF]
Quarterly Journal of the Geological Society of LondonI was engaged for three summer months in 1854, and again for a short tune last year, in examining carefully the lower beds of the Mountain Limestone and the uppermost beds of the Old Red Sandstone, with a view to establish, if possible, the correlation between the Upper Old Red and the corresponding portion of the Devonian series —a relation which has ...
openaire +2 more sources
An Upper Devonian foredeep basin in the Southern Central Iberian Zone (Variscan Iberian Massif): Consequences for Variscan plate dynamics [PDF]
New field research and revision of previous works in the Variscan Iberian Massif unravel the existence of an Upper Devonian foredeep basin in the southern Central Iberian Zone, close to the suture area with the Ossa-Morena Zone.
Martín Parra, Luis Miguel +11 more
core +1 more source