Results 61 to 70 of about 10,898 (175)

Detrital zircon ages, Lu‐Hf isotopes of zircon grains, Sr‐Nd isotopes on whole rock and geochemistry of Campanian turbidites in the Eastern Pontides (NE Türkiye): A provenance assessment and Gondwana records

open access: yesThe Depositional Record, Volume 12, Issue 4, September 2026.
These findings confirm that the Campanian‐aged Bozbent Member turbiditic sequence in the Eastern Pontides was deposited in an extensional fore‐arc basin and therefore exhibits the petrographic and geochemical characteristics of passive margin sandstones.
Çiğdem Saydam Eker   +6 more
wiley   +1 more source

(Table 1b) Microprobe analyses of websterites from the ophiolite complex in the Hunter Fracture Zone

open access: yes, 2003
(Table 1b) Microprobe analyses of websterites from the ophiolite complex in the Hunter Fracture ...
L A Tararin (6960587)   +5 more
core   +1 more source

Long‐term trends in greenness in the alpine zone of northeastern North America from remote sensing

open access: yesEcosphere, Volume 17, Issue 9, September 2026.
Abstract Alpine zones above treeline in the Appalachian Mountains and adjacent ranges of northeastern North America support distinctive ecological communities that thrive where conditions are too harsh for trees to grow. These communities differ from alpine zones elsewhere on the continent and are a regionally important source of floristic biodiversity,
Jonathan W. Chipman   +2 more
wiley   +1 more source

(Table 5a) Chemical composition of gabbro from the ophiolite complex in the Hunter Fracture Zone

open access: yes, 2003
(Table 5a) Chemical composition of gabbro from the ophiolite complex in the Hunter Fracture ...
L A Tararin (6960587)   +5 more
core   +1 more source

Composition and Provenance of Victoria Group Sandstones in Southern North Victoria Land, Antarctica

open access: yesNew Zealand Journal of Geology and Geophysics, Volume 69, Issue 3, September 2026.
Three distinct source areas contributed to sandstones of the Victoria Group within the Transantarctic Basin in southern North Victoria Land. During the Permian, quartzose sandstones were derived from erosion of the local Ross Orogen, likely from an uplifted swell in the area of today's Ross Sea, the Ross High.
Martin Elsner   +6 more
wiley   +1 more source

The tectonic evolution of mantle rocks from the lizardophiolite complex, South-West England [PDF]

open access: yes, 1999
In SW England, a highly deformed and metamorphosed assemblage of ultramafic, mafic and granitic rocks is interpreted to represent a fragment of upper mantle and lower oceanic crust: the Lizard Ophiolite Complex.
Cook, Charles Andrew
core  

(Table 1a) Microprobe analyses of pyroxenites from the ophiolite complex in the Hunter Fracture Zone

open access: yes, 2003
(Table 1a) Microprobe analyses of pyroxenites from the ophiolite complex in the Hunter Fracture ...
L A Tararin (6960587)   +5 more
core   +1 more source

Tourmaline chemistry and investigation of its formation conditions in the northern intrusive body of the Nain ophiolite complex in the northeast of Isfahan Province [PDF]

open access: yesپترولوژی
IntroductionGeographically, the granitoid intrusion under investigation is located in Ardestan, in the northeastern part of Isfahan Province and to the north of the Nain ophiolitic complex, between longitudes 52°50′ to 53°03′ E and latitudes 33°09′N to ...
Mohammad Ali Mackizadeh   +2 more
doaj   +1 more source

Beach Gold and Heavy Mineral Concentrates on Tiwai Spit Gravel Strand Plain, Southland, New Zealand

open access: yesNew Zealand Journal of Geology and Geophysics, Volume 69, Issue 3, September 2026.
The Holocene Tiwai Spit on Foveaux Strait is a 12 km by 2 km gravel‐dominated strand plain, ∼10 m above present sea level. Gravel clasts are dominated by well‐rounded quartz cobbles, pebbles and granules derived from Otago Schist 200 km to the north in evolving river drainage systems during late Cenozoic.
Marshall Palmer, Dave Craw
wiley   +1 more source

Variably evolved gabbroic intrusions within the Xigaze ophiolite (Tibet): new insights into the origin of ophiolite diversity

open access: yes, 2018
Ophiolites worldwide show striking diversities in their rock assemblage and structure (i.e., ophiolite diversity), raising a question whether ophiolites are originally similar before intense tectonic dismemberment.
Zhang W. -Q.   +7 more
core   +1 more source

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