Results 81 to 90 of about 33,629 (250)

Characteristics and genesis of fillings in fracture-cavity space in first member of Permian Maokou Formation, Sichuan Basin: a case study of well A1

open access: yesShiyou shiyan dizhi
In recent years, natural gas discoveries have been continuously made in the first member of the Permian Maokou Formation in the Sichuan Basin, bringing attention to the genesis mechanism of marlstone reservoir space. Centimeter-scale fracture-cavity type
Xianwu MENG   +5 more
doaj   +1 more source

Reshetnikovka formation of south-western Primorye — fragment of the late paleozoic passive continental margin deposits

open access: yesВестник Камчатской региональной ассоциации "Учебно-научный центр". Серия: Науки о Земле
The results of mineralogical and geochemical studies of terrigenous rocks of the Early-Middle Permian Reshetnikovka formation in the southwestern part of Primorsky Krai are considered.
A.I. Malinovsky
doaj   +1 more source

Unveiling Lipoprotein(a): A New Frontier in Heart Health

open access: yesIndian Journal of Clinical Cardiology
Extensive research on Lipoprotein(a) (Lp(a)) levels and their link to morbidity and mortality in regard to cardiovascular risk remains a cornerstone of cardiovascular studies.
Godfrey Tabowei   +10 more
doaj   +1 more source

Early evolutionary history of the seed. [PDF]

open access: yesBiol Rev Camb Philos Soc
ABSTRACT The seed is an essential stage in the life history of gymnospermous and angiospermous plants, facilitating both their survival and dispersal. We reappraise knowledge of the evolutionary history of the gymnospermous seed, from its origin in the late Devonian through to the well‐known end‐Permian extinctions – an interval encompassing the ...
Bateman RM, Spencer ART, Hilton J.
europepmc   +2 more sources

Permian-Triassic brachiopod fauna and the end-Permian mass extinction

open access: yes, 2014
Permian-Triassic brachiopod fauna and the end-Permian mass ...
Y Zhang (5998940)
core  

Complex examination of the Upper Paleozoic siliciclastic rocks from southern Transdanubia, SW Hungary—Mineralogical, petrographic, and geochemical study [PDF]

open access: yes, 2007
A vertical section of Upper Paleozoic sandstones from southern Transdanubia (Mecsek-Villány area, Tisza mega-unit, Hungary) has been analyzed for major and trace elements, including rare earth elements (REEs).
Nesbitt   +34 more
core   +1 more source

The Carboniferous-Permian Transition

open access: yes, 2013
Carboniferous; Permian ...
Spencer G. Lucas, William A. DiMichele, James E. Barrick, Joerg W. Schneider and Justin A. Spielmann
core  

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