Results 61 to 70 of about 799 (197)

Biodiversity across the Guadalupian-Lopingian Boundary: first results on the ostracod (Crustacea) fauna, Chaotian section (Sichuan Province, South China) [PDF]

open access: yes, 2015
International audienceThe Middle Permian-Late Permian boundary (Guadalupian-Lopingian boundary, GLB) interval is characterised by important faunal assemblage changes.
Crasquin, Sylvie   +3 more
core   +3 more sources

Rock‐buffered versus fluid‐buffered geochemistry of structurally controlled, hydrothermal dolomite: Insights from the Sichuan Basin, China

open access: yesSedimentology, Volume 72, Issue 7, Page 2087-2120, December 2025.
ABSTRACT Structurally controlled hydrothermal dolomitization, commonly driven by high‐pressure, high‐temperature fluid–rock reactions, offers insights into the tectonic evolution of sedimentary basins and the geochemical composition of their diagenetic fluids.
Huachuan Jiang   +7 more
wiley   +1 more source

Geochemical characteristics and genesis of element enrichment of niobium-rich-rare earth metal layer in Longtan Formation of Zhina coalfield

open access: yesMeitian dizhi yu kantan
BackgroundWith the increasing demand for strategic metals and the gradual depletion of traditional metal deposit resources, coal and coal-bearing rock series are considered to be potential sources of rare metals, and coal series associated has become one
Yunlong DING   +8 more
doaj   +1 more source

The 1.88 Ga Kotalahti and Vammala nickel belts, Finland: geochemistry of the mafic and ultramafic metavolcanic rocks [PDF]

open access: yes, 2009
The mafic and ultramafic volcanic rocks within the Svecofennian (1.88 Ga) Kotalahti and Vammala Nickel Belts, Finland, are spatially associated and coeval with a suite of mineralized mafic–ultramafic intrusions.
Hannu V. Makkonen   +4 more
core   +1 more source

Evaluation of Present Tectonic Stress Field and Permeability of Coalbed Methane Reservoirs by Inversion of Logging Data From Longtan Formation, Dahebian Block

open access: yesEnergy Science &Engineering, Volume 13, Issue 11, Page 5198-5217, November 2025.
ABSTRACT The permeability of coal reservoirs is predominantly controlled by the present tectonic stress field. This study systematically integrates macro‐ and micro‐scale analytical methods to investigate the controlling mechanisms of tectonic stress on pore‐fracture characteristics and permeability in the Longtan Formation coal reservoirs.
Guoqing He   +6 more
wiley   +1 more source

The Tamar Trough revisited: correlations berween sedimentary beds, basalts, their ages and valley evolution, North Tasmania [PDF]

open access: yes, 2006
The Tamar Trough, an Early Palaeogene fault structure, contains sedimentaty beds and interleaved basaltic flows that infill the structure along its 70 km length. These infills represent a complex interplay between sedimentation, channel erosion, eruptive
Everard, JL   +4 more
core   +2 more sources

A 43,000‐Year‐Long Paleoseismic Record Along the Southern Section of the Lijiang‐Xiaojinhe Fault, Southeastern Tibetan Plateau, China

open access: yesJournal of Geophysical Research: Solid Earth, Volume 130, Issue 10, October 2025.
Abstract Paleoseismic data on the timing of ground‐rupturing earthquakes can help identify the sources of historical earthquakes and define the extent of seismic rupture gaps. The Lijiang‐Xiaojinhe fault (LXF) is a left‐lateral strike‐slip fault that stretches 380 km along the southeastern margin of the Tibet Plateau, passing through the densely ...
Z. Yuan   +9 more
wiley   +1 more source

East African topography and volcanism explained by a single, migrating plume [PDF]

open access: yes, 2020
Anomalous topographic swells and Cenozoic volcanism in east Africa have been associated with mantle plumes. Several models involving one or more fixed plumes beneath the northeastward migrating African plate have been suggested to explain the space-time ...
Gurnis, Michael   +3 more
core   +1 more source

Igneous Rock Associations 16. The Late Permian Emeishan Large Igneous Province [PDF]

open access: yes, 2015
The Late Permian Emeishan large igneous province (ELIP) covers ~0.3x106 km2 of the western margin of the Yangtze Block and Tibetan plateau of SW China with displaced, correlative units in northern Vietnam (Song Da zone).
Shellnutt, J. Gregory
core   +2 more sources

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