Results 91 to 100 of about 5,853 (215)

A magnetic survey of mineral resources in northeastern Cuba [PDF]

Geofísica Internacional, 2006
Interpretation of the aeromagnetic survey of northeastern Cuba at scale 1 50 000 is presented. Mainly ophiolitic rocks are characterized by a high magnetic response. The aeromagnetic data was reduced to the pole and the horizontal and vertical gradients,
José Alberto Batista Rodríguez
doaj  

Microstructural features of chromitites and ultramafic rocks of the Almaz-Zhemchuzhina deposit (Kempirsai massif, Kazakhstan) according to electron backscatter diffraction (EBSD) studies

Записки Горного института
Microstructural features of the main rock-forming minerals of host ultramafic rocks (olivine, orthopyroxene) and chrome spinel from ores of the Almaz-Zhemchuzhina deposit were studied using the electron backscatter diffraction method.
Dmitrii E. Saveliev, Semen N. Sergeev, Darkhan K. Makatov   +2 more
doaj  

The significance of sheeted dike complexes in ophiolites

, 2008
Sheeted dike complexes, in which dike intrudes dike without intermediate screens of gabbro or pillow lava, have long been considered key features of oceanic lithosphere and ophiolites formed in extensional environments.
Zhou, MF, Dilek, Y, Robinson, PT, Malpas, J   +3 more
core   +1 more source

New tectonic discrimination diagrams for basic and ultrabasic volcanic rocks through log-transformed ratios of high field strength elements and implications for petrogenetic processes

Revista Mexicana de Ciencias Geológicas, 2018
The statistically correct handling of compositional data requires log-ratio transformation whereas the multivariate technique of linear discriminant analysis (LDA) assumes a normal distribution of the transformed variables.
Surendra P. Verma, Salil Agrawal
doaj  

U–Pb zircon ages of Late Cretaceous Nain–Dehshir ophiolites, central Iran

, 2016
Late Cretaceous Zagros ophiolites are part of the c. 3000 km long Late Cretaceous Ophiolite Belt of SW Asia including the Troodos (Cyprus), eastern Mediterranean (Turkey, Syria), Zagros (Iran) and Semail ophiolites (Oman).
Hadi Shafaii Moghadam (611777), Fernando Corfu (2840879), Robert J. Stern (556271)   +2 more
core   +1 more source

The Formation And Obduction Of Ophiolites Since The Late Precambrian

, 2006
Ophiolite formation and emplacement has been episodic since the Late Precambrian. This research study examines ophiolites that formed during the Cenozoic, Mesozoic, Paleozoic and Late Precambrian.
Metzler, Stacey
core   +1 more source

Petrologic and metallogenic characteristics of Albanian ophiolites

, 1996
19-24 p. Supported by CNRConsiglio Nazionale delle Ricerche (CNR).
Manika, K, Shallo, M., Premiti, J., Vranaj, A., Ferrara Univ. (Italy). Istituto di Mineralogia, Beccaluva, L.   +5 more
core  

Comparative orotomy of the Archean Superior and Phanerozoic Altaid orogenic systems. [PDF]

Natl Sci Rev, 2023
Kusky TM, Celâl Şengör AM.
europepmc   +1 more source

Petrogenesis and tectono-magmatic significance of the Albanide-Hellenide ophiolites

, 2004
The Mirdita-Subpelagonian ophiolites are part of a continuous ophiolitic belt extending from Dinarides to Albanides and Hellenides, and share geological, litho-stratigraphical, petrological, and metallogenic features.
SIENA, Franca, BECCALUVA, Luigi, COLTORTI, Massimo, SACCANI, Emilio   +3 more
core  

K/Ar age determinations on some tethyan ophiolites

, 1981
30 K/Ar determinations are presented on 25 whole rock samples and 5 mineral concentrates from Corsican, Northern Apennines and Calabrian ophiolites. The K/Ar age of brown-green amphibole from a Corsican metagabbro is 181.4 ± 6.0 m.y.
Beccaluva, Luigi, Chiesa, Sergio, Delaloye, Michel   +2 more
core   +1 more source