Results 191 to 200 of about 242,844 (341)

Geochemical and Seismic Constraints on the Role of Mud Diapirs in Petroleum Migration and Accumulation in the Recôncavo Basin, NE Brazil

open access: yesJournal of Petroleum Geology, EarlyView.
ABSTRACT In the Recôncavo Basin, Northeast of Brazil, mud diapirs have been reported for decades, but their role within the basin's petroleum system remains poorly constrained. Here, we combine 2D seismic interpretation, field observations, and organic geochemical analyses of rocks and oil seeps to investigate the relationship between diapirism and ...
Cora Mattos   +3 more
wiley   +1 more source

Carbonate burial regimes, the Meso-Cenozoic climate, and nannoplankton expansion. [PDF]

open access: yesProc Natl Acad Sci U S A
Salles T   +7 more
europepmc   +1 more source

Divergent defense strategies and niche partitioning in Cretaceous micro‐beetles

open access: yesJournal of Systematics and Evolution, EarlyView.
We report a new clambid beetle from mid‐Cretaceous Kachin amber, Scutacalyptus kolibaci gen. et sp. nov., characterized by a flattened body and explanate margins. Alongside spiny and conglobating clambid forms, this diversity reflects niche partitioning and varied antipredator strategies in the Cretaceous forest floor.
Yan‑Da Li   +3 more
wiley   +1 more source

New evidence on the formation conditions of the Libyan Desert Glass (Western Egypt): Clues from a dendritic zircon inclusion

open access: yesMeteoritics &Planetary Science, EarlyView.
Abstract Libyan Desert Glass (LDG) is an ~29 million years old, silica‐rich glass found in Western Egypt. Whether this glass formed in an impact cratering context associated with the hypervelocity collision of a cometary/asteroidal body or radiative heating during an airburst is debated. Determination of the formation temperatures and pressures of rare
Niccolò Magnani   +6 more
wiley   +1 more source

Petrographic and geochemical characteristics of Cretaceous formations of Nkara region and surrounding area (Kwilu province, DRC)

open access: diamond
Djonive Munene Asidi   +9 more
openalex   +1 more source

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