Results 61 to 70 of about 1,741 (196)

3 ヤマト サンミャク チシツ チョウサ ホウコク ヨホウ ダイ4ジ エットウタイ ヤマト サンミャク チョウサ リョコウ ホウコク ヨホウ [PDF]

open access: yes, 1961
やまと山脈は,A~G(仮称)の7つの山塊よりなり,一種の弧状構造を示している.これらの山塊は,片麻岩類,深成岩類,変基性岩及びペグマタイトによって構成されるが,今回の調査旅行で採集された資料の整理分析によって ...
Koshiro KIZAKI, 木崎 甲子郎
core   +1 more source

An Inverse Method for Quantifying Petrological Parameters and Uncertainty in Phase Equilibrium Modelling

open access: yesJournal of Metamorphic Geology, Volume 44, Issue 1, Page 70-84, January 2026.
ABSTRACT Phase equilibrium modelling offers a powerful quantitative framework for understanding petrological processes. Yet, many studies still rely on qualitative comparisons between natural datasets and these forward modelled predictions to constrain model parameters, commonly pressure–temperature (P–T) conditions.
T. Mackay‐Champion, I. P. Cawood
wiley   +1 more source

Major-Element Geochemistry and Fe3+/ΣFe of Metabasites

open access: yesJournal of Petrology
Abstract Metabasites (metamorphosed mafic rocks) are crucial for understanding metamorphic and tectonic processes. Their preservation in exhumed orogenic belts from throughout Earth’s history and the diverse mineral assemblages they form under different pressure–temperature conditions make them valuable for studying metamorphic processes.
Jacob B Forshaw   +6 more
openaire   +2 more sources

Garnet-glaucophane schists of Tashlinsky block from Maksyutov complex (Southern Urals)

open access: yesЛитосфера, 2015
On the basis of newest mineralogical, petrological and isotope-geochemical data we have considered the condition and the nature of garnet-glaucophane schists, associated with antigorite serpentinites.
P. M. Valizer   +3 more
doaj   +2 more sources

Structural context and variation of ocean plate stratigraphy, Franciscan Complex, California: insight into mélange origins and subduction-accretion processes

open access: yesProgress in Earth and Planetary Science, 2017
The transfer (accretion) of materials from a subducting oceanic plate to a subduction-accretionary complex has produced rock assemblages recording the history of the subducted oceanic plate from formation to arrival at the trench. These rock assemblages,
John Wakabayashi
doaj   +1 more source

Geology of the Skallen Region, Lutzow-Holmbukta, East Antarctica (Earth Sciences) [PDF]

open access: yes, 1977
Results of the field surveys in the Skallen region during 1969-1970 are summarized with descriptions of stratigraphy and considerations on geotectonic history of the region. Field and aerial photographs, route maps, and field descriptions are also given.
Masaru YOSHIDA
core   +1 more source

Tectonics, geology and origins of Te Riu‐a‐Māui / Zealandia

open access: yesNew Zealand Journal of Geology and Geophysics, Volume 68, Issue 4, Page 531-567, December 2025.
ABSTRACT Te Riu‐a‐Māui / Zealandia is a 95% submerged, five million square km southern hemisphere continent that includes the islands of New Zealand and New Caledonia. For the last 45 million years (Ma) Zealandia has been cut by the Pacific‐Australian plate boundary which today changes character from a west‐dipping subduction zone in the north to ...
Nick Mortimer
wiley   +1 more source

Iron isotope fractionation in subduction-related high-pressure metabasites (Ile de Groix, France) [PDF]

open access: yesContributions to Mineralogy and Petrology, 2017
Characterisation of mass transfer during subduction is fundamental to understand the origin of compositional heterogeneities in the upper mantle. Fe isotopes were measured in high-pressure/low-temperature metabasites (blueschists, eclogites and retrograde greenschists) from the Ile de Groix (France), a Variscan high-pressure terrane, to determine if ...
El Korh Afifé   +3 more
openaire   +2 more sources

Identifying obscured faults in urban areas: insights from Tāmaki Makaurau Auckland, Aotearoa New Zealand

open access: yesNew Zealand Journal of Geology and Geophysics, Volume 68, Issue 4, Page 897-917, December 2025.
ABSTRACT Locating faults can be challenging in urban environments and low strain rate regions, where surface expressions of faulting are erased by anthropogenic and surface processes since the last earthquake. While urban development can provide challenges, it can also provide rich resources such as geotechnical boreholes and high‐resolution LiDAR ...
Jill A. Kenny   +9 more
wiley   +1 more source

Geochemistry of metabasites and element mobility [PDF]

open access: yes, 1988
No abstract ...
Schüssler, U.   +3 more
openaire   +1 more source

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