Results 41 to 50 of about 46,008 (233)
Tectonic history of the South Tannuol Fault Zone (Tuva region of the northern Central Asian Orogenic Belt, Russia) : constraints from multi-method geochronology [PDF]
, 2020 In this study, we present zircon U/Pb, plagioclase and K-feldspar Ar-40/Ar-39 and apatite fission track (AFT) data along the South Tannuol Fault Zone (STFZ).
De Grave, Johan +6 more
core +1 more source
The oldest ascocerid cephalopod from the Silurian of Estonia and notes on the biogeography of the order Ascocerida (class Cephalopoda) [PDF]
Estonian Journal of Earth Sciences, 2016 The early Palaeozoic order Ascocerida is a group of morphologically unique and rare cephalopods known from the Ordovician and Silurian rocks of Avalonia, Baltica, Laurentia and Perunica.
Martina Aubrechtova, Tõnu Meidla
doaj +1 more source
Geologos, 2014 At a glance, progress in palaeontology and eustatic reconstructions in the past decade permits to prove or to disprove the possible dependence of Palaeozoic brachiopod generic diversity dynamics on global sea-level changes.
Ruban Dmitry A.
doaj +1 more source
Groundwater, EarlyView.Abstract We propose that a new term, aquitardifer, be added to the hydrogeologic nomenclature. Aquitardifer, a blend of the terms aquitard and aquifer, accounts for geologic materials that have properties of both as traditionally defined. Several examples of aquitardifers are provided, as is justification for and applicability of the term.
Anthony C. Runkel, Jessica R. Meyer
wiley +1 more source
The Geology of Aquitards in Alluvial Aquifers: A Predictive Approach Based on Facies Models
Groundwater, EarlyView.We review facies models for alluvial aquifers and demonstrate how they can be used to predict aquifer and aquitard continuity in three dimensions. We provide case studies illustrating how facies models can be used to improve groundwater investigation and remediation outcomes.
Michael R. Shultz, Colin Plank
wiley +1 more source
GeologosFossils recovered from Baltoscandian erratic boulders and cobbles, collected on the beach near Orłowo and Oksywie Cliff (the latter for the first time) near Gdynia in northern Poland constitute an interesting lot.
Kowalewska Agata, Jagt-Yazykova Elena
doaj +1 more source
Features of facies of reefs of the silurian age of Volyn-Podillia
Мінеральні ресурси України, 2021 On the territory of Volyn-Podillya Silurian deposits are represented by thick strata of terrigenous and carbonate deposits, they are mainly represented by marls, argillites, limestones, dolomites, etc.
T. V. Sushko
doaj +1 more source
A mineral reconnaissance survey of the Abington-Biggar-Moffat-area, south-central Scotland [PDF]
, 1979 Panned heavy mineral concentrates, mostly obtained from stream sediments, were collected from 195 sites in the Abington-Biggar-Moffat area. The project area, which lies immediately east of the formerly important mining district of Wanlockhead ...
Dawson, J., Floyd, J.D., Phillip, P.R.
core
Meteoritics &Planetary Science, EarlyView.Abstract The majority of planetary impacts occur at oblique angles. Impact structures on Earth are commonly eroded or buried, rendering the identification of the direction and angle of impact—using methods such as asymmetries in ejecta distribution, surface topographic expression, central uplift structure, and geophysical anomalies—challenging. In this
Eloise E. Matthews +5 more
wiley +1 more source
A summary and revision of the East Baltic Silurian chitinozoan biozonation [PDF]
Estonian Journal of Earth Sciences, 2012 The biostratigraphical data on the East Baltic Silurian chitinozoans are summarized. Based on the study of nine East Baltic drill cores, 28 regional chitinozoan zonal units, including 26 biozones and 2 interzones, are briefly characterized. In comparison
Viiu Nestor
doaj +1 more source