Results 131 to 140 of about 44,585 (300)

A new zoroasterid asteroid from the Eocene of Seymour Island, Antarctica [PDF]

open access: yesActa Palaeontologica Polonica, 2021
EVANGELINA E. PALÓPOLO   +4 more
doaj  

Organic Geochemical Characterization and Exploration Prospects of Hydrocarbon Source Rocks in Nepal

open access: yesEnergy Science &Engineering, Volume 14, Issue 4, Page 1781-1794, April 2026.
It provides a more detailed introduction to the current situation of oil and gas exploration in Nepal, as well as the properties and distribution characteristics of source rocks. ABSTRACT This study aims to evaluate the hydrocarbon generation potential and exploration prospects of hydrocarbon source rocks in the Dailekh to Dang–Tansen area of Nepal ...
Guoqiang Zhang   +4 more
wiley   +1 more source

Tracking the Equator Into the Paleogene (abstract of paper presented at AGU Fall Meeting, San Francisco, 8-12 Dec 2003)

open access: yes, 2003
Stratigraphy has been compiled for 63 tropical Pacific drill sites that sample lower Neogene and Paleogene sediments. These Sites derive from drilling on DSDP Leg 5 through ODP Leg 199.
Backman, J.   +6 more
core  

Characteristics of Lacustrine Diamictite and Analysis of Diagenetic Reservoir Facies in the Neogene Lower Youshashan Formation in the Dafengshan Tectonic Belt in the Qaidam Basin

open access: yesEnergy Science &Engineering, Volume 14, Issue 4, Page 1976-1989, April 2026.
Based on field outcrop data, core descriptions, comprehensive thin section data (plain, cast, and fluorescent), scanning electron microscopy, whole rock analysis via X‐ray diffraction, physical property tests, element logging, core recording, and oil pilot tests, we propose utilizing a mature and practical three component classification method for ...
Lin Xie   +7 more
wiley   +1 more source

A Hydrogeophysical Survey Utilising the sTEM and sTEMprofiler Systems: Transient Electromagnetic Data and Resistivity Models

open access: yesGeoscience Data Journal, Volume 13, Issue 2, April 2026.
We present a transient electromagnetic dataset from northwestern Denmark acquired with the novel sTEMprofiler system, mapping buried Quaternary valleys. The open dataset, including raw data and resistivity models, enables benchmarking of inversion methods and integration into geological and hydrological studies. ABSTRACT Transient electromagnetic (TEM)
Line M. Madsen   +3 more
wiley   +1 more source

Plate tectonics in the microscopy realm: Molecular insights into morphological variability of Peridinium willei (Peridiniales, Dinophyceae)

open access: yesTAXON, Volume 75, Issue 2, April 2026.
Abstract Freshwater Peridinium willei (Peridiniaceae) is globally distributed, but reports linking its morphologies with DNA sequence data remain scarce. The taxonomy of the species, and its infraspecific taxa, remain ambiguous due to the lack of DNA sequence data for the original and type material.
Arwin Ahmadpur   +17 more
wiley   +1 more source

Dispersal and delimitation: Phylogenomics of Connaraceae prompts revised generic delimitation in Cnestideae and reveals global biogeographic patterns

open access: yesTAXON, Volume 75, Issue 2, April 2026.
Abstract The tempo and mode of assembly of the world's most diverse, tropical floras remain poorly known. Evolutionary relationships within pantropical plant clades such as Connaraceae (Oxalidales, ca. 220 species) offer an opportunity to address this issue.
Serafin J.R. Streiff, Jurriaan M. de Vos
wiley   +1 more source

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