Results 51 to 60 of about 12,768 (231)
Geological Journal, EarlyView.The composition of intrusive rocks suggests that the magma was likely generated in a subduction‐related setting. The arc crustal thickness in the Phnom Sro Ngam and Halo Prospects was probably < 40 km during emplacement. Zircon U–Pb age range indicates a correlation with Loei Fold Belt magmatic activity.
Sirisokha Seang +6 more
wiley +1 more source
Silurian succession from North Africa : Sedimentology and thermal history for a new era of hydrocarbon exploration [PDF]
, 2020 PhD project: Silurian succession from North Africa - Sedimentology, ichnology and thermal history for a new era of hydrocarbon ...
Djouder, Hocine
core
Folklore Studies, Fieldwork and the Making of a Domestic Anthropology in Fin‐de‐Siècle Britain
History, EarlyView.Abstract This article follows the ‘communities of knowledge‐making’ that formed around folklore collection at the end of the nineteenth century. Often regarded as eccentric or marginal figures in the history of human science, these collectors in fact engaged in lively and sophisticated discussions about the methodologies needed to study the mental ...
HARRY PARKER
wiley +1 more source
Boreas, EarlyView.Map of Lower sediment (LS) thickness is a surrogate for the distribution of Thorncliffe Formation (TF) and ~75% of TF thickness from the slope of Niagara Escarpment east to Brighton. Inset images show the LS sequence at the Don Valleys brickyards (DVBY) and undeformed TF sand and gravel (~15 m) below Newmarket Till (NT) at sites L and Co.
David R. Sharpe +3 more
wiley +1 more source
An updated correlation of the Silurian strata in Estonia [PDF]
Estonian Journal of Earth SciencesThe correlation of the Silurian succession of Estonia with the global standard has long been considered reliable. However, new information, particularly on the distribution of microfossils, has changed our understanding of the Silurian stratigraphy in ...
Peep Männik, Tõnu Meidla, Olle Hints
doaj +1 more source
Geostandards and Geoanalytical Research, EarlyView.Key Points 7 μm spot‐diameter LA‐MC‐ICP‐MS analyses yield accurate zircon U‐Pb ages. 1013 Ω amplifier resistors improve low‐signal Pb measurements. Saturn correction protocols minimise down‐hole fractionation effects. We present a systematic evaluation of high spatial‐resolution zircon U‐Pb dating using a Thermo Scientific Neoma multi‐collector ICP‐MS ...
Cristiano Lana, John D. Clemens
wiley +1 more source
Scientific Reports, 2022 Bryozoans were common benthic invertebrates in the Silurian seas. The large biodiversity among Silurian benthic organisms prompted diversified interactions, and as a result bryozoans hosted many other organisms as symbionts.
Mikołaj K. Zapalski +4 more
doaj +1 more source
The Unexpected Discovery of Paleocene? Coals in Outcrops Thought to Be Cambrian, Al Huqf, Oman
Journal of Petroleum Geology, EarlyView.ABSTRACT Two brown organic deposits were encountered whilst investigating kaolinitic claystones thought to occur at the base of a Cambrian formation at outcrop. The age of these organic deposits is probably Paleocene from palynology. Organic petrography shows that they are subbituminous coals with some oil source potential.
Mohammed H. Al Kindi +4 more
wiley +1 more source
Journal of Asian Earth Sciences: XThe Silurian was featured by frequent climatic and environmental changes. Impoverished marine faunas slowly recovered from the end-Ordovician mass extinction.
La Zhang +6 more
doaj +1 more source