Results 141 to 150 of about 115,566 (343)

Application of mineralogical, petrological and geochemical tools for evaluating the palaeohdrogeological evolution of the PADAMOT study sites [PDF]

open access: yes, 2005
The role of Work Package (WP) 2 of the PADAMOT project – ‘Palaeohydrogeological Data Measurements’ - has been to study late-stage fracture mineral and water samples from groundwater systems in Spain, Sweden, United Kingdom and the Czech Republic, with ...
Bouch, J.E.   +18 more
core  

The Siluro—Devonian Boundary [PDF]

open access: yesGeological Magazine, 1969
Redefinition of Silurian-Devonian boundary at the base of the Monograptus uniformis zone not to be accepted in England until ratified by International Geological ...
openaire   +2 more sources

Some issues related to the Svalbardian tectonic event (Ellesmerian Orogeny) in Svalbard

open access: yesPolar Research
Svalbard has long been thought to represent the easternmost realm of the Ellesmerian Orogeny in the late Devonian or early Mississippian (Svalbardian tectonic event).
Winfried Dallmann, Karsten Piepjohn
doaj   +1 more source

Earth-atmosphere evolution based on the new determination of Devonian atmosphere Ar isotopic composition [PDF]

open access: yes
The isotopic composition of the noble gases, in particular Ar, in samples of ancient atmosphere trapped in rocks and minerals provides the strongest constraints on the timing and rate of Earth atmosphere formation by degassing of the Earth's interior. We
Gandanger, Pierre   +3 more
core   +1 more source

Reading the rocks [PDF]

open access: yes, 2005
Emrys Phillips and Elizabeth Pickett explain how rocks – even a grain of sand – tell us about long-lost ...
Phillips, Emrys, Pickett, Elizabeth
core  

Allomyces in the Devonian [PDF]

open access: yesNature, 1994
Winfried Remy   +2 more
openaire   +1 more source

Linking anatomical diversity with functional life strategies in a liana community of central Africa

open access: yesNew Phytologist, Volume 248, Issue 3, Page 1225-1244, November 2025.
Summary Studying lianas involves unique challenges due to their high functional diversity. Despite their prominence in tropical forests, gaps in the understanding of anatomical organisation affect interpretations of their co‐existing functional strategies.
Begüm Kaçamak   +5 more
wiley   +1 more source

New Permian Paleomagnetic and Geochronologic Results From the Alxa Block: Constraints on Its Tectonic Affinity and the Closure of Paleo‐Asian Ocean

open access: yesGeophysical Research Letters, Volume 52, Issue 20, 28 October 2025.
Abstract The Paleo‐Asian Ocean's (PAO) closure timing and the Alxa Block's (ALB) tectonic affinity remain debated. We present new paleomagnetic and geochronologic data from Permian volcanic and sedimentary rocks in the ALB. Characteristic remanent magnetization (ChRM) directions from Early (∼282 Ma), Middle (∼268 Ma), and Late Permian (∼255 Ma) rocks ...
Wei Xu   +10 more
wiley   +1 more source

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