Results 111 to 120 of about 123,575 (347)

Geochronology and geochemistry of the Paleogene Magdalena Suite of anatectic granites in northern Sonora, México

Revista Mexicana de Ciencias Geológicas
New zircon U-Pb geochronology, zircon geochemistry, and whole rock geochemistry are presented from the Magdalena granites in northern Sonora, Mexico that outcrop in the footwall of the Magdalena-Madera metamorphic core complex.
James B. Chapman, Carlos M. González-León, Luigi A. Solari, Elizard González-Becuar, Jonathan A. Nourse, Michelle Vázquez, Teresita Sánchez Navarro, Rufino Lozano Santacruz, Ofelia Pérez Arvizu, Estefany Grijalva Espinoza   +9 more
doaj   +1 more source

Comparative Studies of Oklahoma and Missouri Granites with Special Attention to the Heavy Minerals of the Oklahoma Granites

, 1949
When examined petrographically the granites of Oklahoma show a marked similarity to the granites of South­eastern Missouri. The same heavy accessory mineral suites are present in the granites of both regions and include: fluorite, zircon, apatite ...
Maurer, Russell B.
core  

Les granites des Vosges moyennes : un exemple de granites de cratons formés par palingenèses successives

, 1967
Man unterscheidet Granite, die für die beiden Zonen der mittleren Vogesen spezifisch sind. Es handelt sich immer um kratonische Granite. Sie haben sich wahrscheinlich durch anatektische Palingenese aus älteren Gesteinen gebildet.
Hameurt, J.
core   +1 more source

Enhancing Rock Strength Prediction and Features Selection by Coupling Well Log Data and Deep Learning Approaches in Reservoir Geomechanics

International Journal for Numerical and Analytical Methods in Geomechanics, EarlyView.
ABSTRACT Accurate rock strength parameters play a vital role in petroleum and mining operations for sustainable drilling activities, and wellbore stability analysis. This study investigates the applicability of deep learning techniques for assessing data‐driven models, and to conduct parametric sensitivity examination for feature attributes ranking to ...
Mohammad Islam Miah, Md. Shakil Rahaman, Travis Wiens   +2 more
wiley   +1 more source

Petrography, geochemistry and Sm-Nd isotopes of the granites from eastern of the Tapajós Domain, Pará state

Brazilian Journal of Geology
: The Tapajós Domain, located in the southern portion of the Amazonian Craton, is a tectonic domain of the Tapajós-Parima Province, a Paleoproterozoic orogenic belt adjacent to a reworked Archean crust, the Central Amazonian Province.
Flávio Robson Dias Semblano, Moacir José Buenano Macambira, Marcelo Lacerda Vasquez   +2 more
doaj   +1 more source

Processes of granite emplacement: NW Ireland and SE Brazil [PDF]

, 1997
This thesis is a study of some of the processes which operate at mid crustal levels (10- 20km) during the emplacement of granitoid magmas, with particular reference to the process of in-situ expansion and the association between magma emplacement and ...
Molyneux, Simon J.
core  

Géochimie et minéralogie des granites de la région de Hetai, province de Guangdong, Chine méridionale = Geochemistry and mineralogy of granites in the Hetai area, Guangdong, South China

, 1993
Cette thèse porte sur la genèse et l'évolution des roches granitiques de la région de Hetai et sur leurs relations possibles avec la minéralisation aurifère. Cette région de la Chine Méridionale est située à l'ouest de la Province de Guangdong.
Yang, Wenjin
core   +1 more source

Taxonomic novelties in subgenus Euphorbia (Euphorbiaceae) from South India

Nordic Journal of Botany, EarlyView.
Extensive floristic explorations throughout southern India have uncovered some noteworthy taxonomic additions within the subgenus Euphorbia (Euphorbiaceae). Three distinct taxa of Euphorbia are described and illustrated herein as E. sankarensis, E. bahalita and E. tortilis var. mysorensis.
Sarojini Devi Naidu, Raja Kullayiswamy Kusom   +1 more
wiley   +1 more source

MMT1-20180517RG - Robin Japanangka Granites

Robin Japanangka Granites is reading his Warlpiri translation of the Wanji Wanji Community information film..

core   +1 more source

Numerical Analysis of Tensile Crack Initiation and Propagation in Granites

, 2017
Fracture analyses based on finite cover method (FCM) are conducted to investigate a fracture mechanism of granites. The analysis by the FCM, which is a cover-based generalized finite element method, has been extended for analyses of fracture process ...
Obara, Yuzo, Kataoka, Minami, 尾原, 祐三, オバラ, ユウゾウ, カタオカ, ミナミ, イシイ, タテキ, Jeong, SangSun, Ishii, Tateki   +7 more
core   +1 more source