Results 181 to 190 of about 975,679 (231)

The Unexpected Discovery of Paleocene? Coals in Outcrops Thought to Be Cambrian, Al Huqf, Oman

open access: yesJournal of Petroleum Geology, Volume 49, Issue 4, Page 1179-1194, October 2026.
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

First records of Boreolithothamnion astragaloi and Boreolithothamnion soriferum (Hapalidiales, Rhodophyta) from Japan with the characterization of Boreolithothamnion japonicum from Hokkaido based on molecular and morpho‐anatomical analyses

open access: yesPhycological Research, Volume 74, Issue 4, Page 318-332, October 2026.
SUMMARY Boreolithothamnion is a non‐geniculate coralline red algal genus distributed in cold to warm temperate regions of the Northern Hemisphere. Since the establishment of the genus in 2023, following the redefinition of the genus Lithothamnion, its species diversity and distribution of Boreolithothamnion in Japan needed to be reassessed.
Min‐Khant‐Kyaw   +3 more
wiley   +1 more source

The effects of bioturbation on porewater chemistry and early marine diagenesis: Evidence from a modern intertidal zone in Abu Dhabi, U.A.E.

open access: yesSedimentology, Volume 73, Issue 6, Page 2120-2142, October 2026.
ABSTRACT Early marine carbonate cements generally form in CaCO3‐supersaturated seawater at the seabed or shallow burial depths, resulting in syn‐sedimentary cemented firmgrounds and hardgrounds. The processes controlling early marine diagenesis are complex, particularly in coastal environments where geochemistry is influenced by different water sources
Drew Brown   +7 more
wiley   +1 more source

Recognition of fossil keratose sponges in carbonates using petrographic and machine‐learning classification

open access: yesSedimentology, Volume 73, Issue 6, Page 2246-2280, October 2026.
ABSTRACT Filamentous, anastomosing spar‐filled networks in Phanerozoic carbonates have been interpreted as the mineralised remains of keratose (non‐spiculate) sponges, yet their recognition remains contested because fabrics of broadly similar appearance may arise from microbial, diagenetic or physical processes. This study combines direct fossil–modern
Jeong‐Hyun Lee   +2 more
wiley   +1 more source

Evidence for the continental origin of Pliocene deposits in the central Baja California peninsula, Mexico, and implications for controls on biodiversity

open access: yesSedimentology, Volume 73, Issue 6, Page 2488-2518, October 2026.
ABSTRACT Previous studies have documented genetic divergence within the last few million years between northern and southern populations of terrestrial plants and animals along the Baja California peninsula, with many studies hypothesising that the divergence is due to an ancient seaway that crossed the central peninsula and created a physical barrier ...
Kevin K. Gardner   +8 more
wiley   +1 more source

Assessment of Seismic Performance and Structural Health Monitoring of a Retrofitted Reinforced Concrete Structure with Polyurethane-Based Interventions and Vertical Greenery Systems. [PDF]

open access: yesPolymers (Basel)
Rousakis T   +13 more
europepmc   +1 more source

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